A genus of oysters in the family OSTREIDAE, class BIVALVIA.
A family of marine mollusks in the class BIVALVIA, commonly known as oysters. They have a rough irregular shell closed by a single adductor muscle.
Aquatic invertebrates belonging to the phylum MOLLUSCA or the subphylum CRUSTACEA, and used as food.
Any blood or formed element especially in invertebrates.
Cultivation of natural faunal resources of water. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A partially enclosed body of water, and its surrounding coastal habitats, where saltwater from the ocean mixes with fresh water from rivers or streams. The resulting mixture of seawater and fresh water is called brackish water and its salinity can range from 0.5 to 35 ppt. (accessed http://oceanservice.noaa.gov/education/kits/estuaries/estuaries01_whatis.html)
A group of three related eukaryotic phyla whose members possess an alveolar membrane system, consisting of flattened membrane-bound sacs lying beneath the outer cell membrane.
A genus of VIBRIONACEAE, made up of short, slightly curved, motile, gram-negative rods. Various species produce cholera and other gastrointestinal disorders as well as abortion in sheep and cattle.
Paired respiratory organs of fishes and some amphibians that are analogous to lungs. They are richly supplied with blood vessels by which oxygen and carbon dioxide are exchanged directly with the environment.
The salinated water of OCEANS AND SEAS that provides habitat for marine organisms.
One of the three domains of life (the others being BACTERIA and ARCHAEA), also called Eukarya. These are organisms whose cells are enclosed in membranes and possess a nucleus. They comprise almost all multicellular and many unicellular organisms, and are traditionally divided into groups (sometimes called kingdoms) including ANIMALS; PLANTS; FUNGI; and various algae and other taxa that were previously part of the old kingdom Protista.
A class in the phylum MOLLUSCA comprised of mussels; clams; OYSTERS; COCKLES; and SCALLOPS. They are characterized by a bilaterally symmetrical hinged shell and a muscular foot used for burrowing and anchoring.
A phylum of the kingdom Metazoa. Mollusca have soft, unsegmented bodies with an anterior head, a dorsal visceral mass, and a ventral foot. Most are encased in a protective calcareous shell. It includes the classes GASTROPODA; BIVALVIA; CEPHALOPODA; Aplacophora; Scaphopoda; Polyplacophora; and Monoplacophora.
The blood/lymphlike nutrient fluid of some invertebrates.
A species of bacteria found in the marine environment, sea foods, and the feces of patients with acute enteritis.
A primitive form of digestive gland found in marine ARTHROPODS, that contains cells similar to those found in the mammalian liver (HEPATOCYTES), and the PANCREAS.
Wormlike or grublike stage, following the egg in the life cycle of insects, worms, and other metamorphosing animals.
A group of amoeboid and flagellate EUKARYOTES in the supergroup RHIZARIA. They feed by means of threadlike pseudopods.
Infections with unicellular organisms formerly members of the subkingdom Protozoa. The infections may be experimental or veterinary.
Divisions of the year according to some regularly recurrent phenomena usually astronomical or climatic. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
A species of halophilic bacteria in the genus VIBRIO, which lives in warm SEAWATER. It can cause infections in those who eat raw contaminated seafood or have open wounds exposed to seawater.
Determination of the energy distribution of gamma rays emitted by nuclei. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A phylum of unicellular parasitic EUKARYOTES characterized by the presence of complex apical organelles generally consisting of a conoid that aids in penetrating host cells, rhoptries that possibly secrete a proteolytic enzyme, and subpellicular microtubules that may be related to motility.
Insulated enclosures in which temperature, humidity, and other environmental conditions can be regulated at levels optimal for growth, hatching, reproduction, or metabolic reactions.
A phylum of metazoan invertebrates comprising the segmented worms, and including marine annelids (POLYCHAETA), freshwater annelids, earthworms (OLIGOCHAETA), and LEECHES. Only the leeches are of medical interest. (Dorland, 27th ed)
A phylum of small sessile aquatic animals living as small tufted colonies. Some appear like hydroids or corals, but their internal structure is more advanced. Most bryozoans are matlike, forming thin encrustations on rocks, shells, or kelp. (Storer & Stebbins, General Zoology, 6th ed, p443)
High molecular weight polymers containing a mixture of purine and pyrimidine nucleotides chained together by ribose or deoxyribose linkages.
Animals that have no spinal column.
An enzyme that activates methionine with its specific transfer RNA. EC 6.1.1.10.
A subclass of enzymes that aminoacylate AMINO ACID-SPECIFIC TRANSFER RNA with their corresponding AMINO ACIDS.
Common name for the order Pleuronectiformes. A very distinctive group in that during development they become asymmetrical, i.e., one eye migrates to lie adjacent to the other. They swim on the eyeless side. FLOUNDER, sole, and turbot, along with several others, are included in this order.
The most common of the microsatellite tandem repeats (MICROSATELLITE REPEATS) dispersed in the euchromatic arms of chromosomes. They consist of two nucleotides repeated in tandem; guanine and thymine, (GT)n, is the most frequently seen.
A variety of simple repeat sequences that are distributed throughout the GENOME. They are characterized by a short repeat unit of 2-8 basepairs that is repeated up to 100 times. They are also known as short tandem repeats (STRs).
A republic in western Africa, southwest of MAURITANIA and east of MALI. Its capital is Dakar.
Electrophoresis in which various denaturant gradients are used to induce nucleic acids to melt at various stages resulting in separation of molecules based on small sequence differences including SNPs. The denaturants used include heat, formamide, and urea.
Flagellate EUKARYOTES, found mainly in the oceans. They are characterized by the presence of transverse and longitudinal flagella which propel the organisms in a rotating manner through the water. Dinoflagellida were formerly members of the class Phytomastigophorea under the old five kingdom paradigm.
Poisoning from toxins present in bivalve mollusks that have been ingested. Four distinct types of shellfish poisoning are recognized based on the toxin involved.
Toxic or poisonous substances elaborated by marine flora or fauna. They include also specific, characterized poisons or toxins for which there is no more specific heading, like those from poisonous FISHES.
A compound that contains a reduced purine ring system but is not biosynthetically related to the purine alkaloids. It is a poison found in certain edible mollusks at certain times; elaborated by GONYAULAX and consumed by mollusks, fishes, etc. without ill effects. It is neurotoxic and causes RESPIRATORY PARALYSIS and other effects in MAMMALS, known as paralytic SHELLFISH poisoning.
Four fused benzyl rings with three linear and one angular, that can be viewed as a benzyl-phenanthrenes. Compare with NAPHTHACENES which are four linear rings.
Compounds consisting of two or more fused ring structures.
A 20-carbon dibenz(de,kl)anthracene that can be viewed as a naphthalene fused to a phenalene or as dinaphthalene. It is used as fluorescent lipid probe in the cytochemistry of membranes and is a polycyclic hydrocarbon pollutant in soil and water. Derivatives may be carcinogenic.
Non-frontal low-pressure systems over tropical or sub-tropical waters with organized convection and definite pattern of surface wind circulation.
A major group of unsaturated cyclic hydrocarbons containing two or more rings. The vast number of compounds of this important group, derived chiefly from petroleum and coal tar, are rather highly reactive and chemically versatile. The name is due to the strong and not unpleasant odor characteristic of most substances of this nature. (From Hawley's Condensed Chemical Dictionary, 12th ed, p96)

Characterization of a defensin from the oyster Crassostrea gigas. Recombinant production, folding, solution structure, antimicrobial activities, and gene expression. (1/126)

In invertebrates, defensins were found in arthropods and in the mussels. Here, we report for the first time the identification and characterization of a defensin (Cg-Def) from an oyster. Cg-def mRNA was isolated from Crassostrea gigas mantle using an expressed sequence tag approach. To gain insight into potential roles of Cg-Def in oyster immunity, we produced the recombinant peptide in Escherichia coli, characterized its antimicrobial activities, determined its solution structure by NMR spectroscopy, and quantified its gene expression in vivo following bacterial challenge of oysters. Recombinant Cg-Def was active in vitro against Gram-positive bacteria but showed no or limited activities against Gram-negative bacteria and fungi. The activity of Cg-Def was retained in vitro at a salt concentration similar to that of seawater. The Cg-Def structure shares the so-called cystine-stabilized alpha-beta motif (CS-alphabeta) with arthropod defensins but is characterized by the presence of an additional disulfide bond, as previously observed in the mussel defensin (MGD-1). Nevertheless, despite a similar global fold, the Cg-Def and MGD-1 structures mainly differ by the size of their loops and by the presence of two aspartic residues in Cg-Def. Distribution of Cg-def mRNA in various oyster tissues revealed that Cg-def is mainly expressed in mantle edge where it was detected by mass spectrometry analyses. Furthermore, we observed that the Cg-def messenger concentration was unchanged after bacterial challenge. Our results suggest that Cg-def gene is continuously expressed in the mantle and would play a key role in oyster by providing a first line of defense against pathogen colonization.  (+info)

Vibrio gigantis sp. nov., isolated from the haemolymph of cultured oysters (Crassostrea gigas). (2/126)

Polyphasic analysis of four new Vibrio isolates originating from the haemolymph of diseased cultured oysters is described. The new isolates were closely related to Vibrio splendidus, having 98 % 16S rRNA gene sequence similarity. Phylogenetic analysis based on DNA gyrase subunit B (gyrB), RNA polymerase sigma70 factor (rpoD), replication origin-binding protein (rctB) and transmembrane regulatory protein (toxR) genes, fluorescent amplified fragment length polymorphism and DNA-DNA hybridization experiments clearly showed that the new isolates form a tight genomic group that is different from the currently known Vibrio species. It is proposed that these new isolates should be accommodated in a novel species, Vibrio gigantis sp. nov. Phenotypic features that differentiate V. gigantis from other known Vibrio species include arginine dihydrolase, gelatinase and beta-galactosidase activities, NO(2) production, growth at 35 degrees C, and utilization of sucrose, melibiose, amygdalin, glycerol, galactose, starch and glycogen. The type strain is LGP 13T (=LMG 22741T=CIP 108656T).  (+info)

In vitro research of anti-HSV-1 activity in different extracts from Pacific oysters Crassostrea gigas. (3/126)

Mortalities related to the detection of Ostreid Herpesvirus 1 (OsHV-1) have been previously reported in France among larvae and spat of the Pacific oyster Crassostrea gigas. Adult oysters appear less sensitive to herpesvirus infections, although OsHV-1 has been detected in adults without signs of disease or mortality. This suggests that the virus is able to persist in its host and that adult oysters may be able to control OsHV-1 infection. Little is known about antiviral substances in invertebrates. The present work concerns the research of antiviral substances in adult oyster C. gigas, where putative antiviral activities were monitored using 3 strategies: (1) in metabolites with variable polarity, (2) in peptidic extracts and (3) in crude haemolymph. In vitro antiviral assays were based on inhibition of Herpes simplex virus type 1 (HSV-1) replication in Vero cell monolayers. All extracts presented no cytotoxicity. Antiviral activity was detected in the fresh filtered haemolymph (EC50:425 microg ml(-1)) and seasonal variation of the haemolymph antiviral activity was monitored.  (+info)

Purification and antigenic characteristics of a rickettsia-like organism from the oyster Crassostrea ariakensis. (4/126)

A rickettsia-like organism (RLO) has been suggested to be the etiological agent responsible for heavy losses of the oyster Crassostrea ariakensis Gould in China. Because of the lack of molluscan cell lines for in vitro culture of intracellular prokaryotes, antigenic analysis of RLOs has been limited by the inherent difficulties of their purification. In this report, we describe the use of differential speed centrifugation and renografin density gradient centrifugation to purify the RLO directly from infected oyster tissues. The purity and integrity of purified prokaryotes were validated by transmission electron microscopy. Thirteen major constituent proteins, with molecular weights ranging between 17 and 99 kDa, were electrophoretically identified by silver staining, and 8 major proteins were identified with Coomassie blue R staining. Specific mouse polyclonal antiserum was prepared for serological characterization of the RLO and was used in an immunoblot assay, and 3 major antigen groups were identified. The present results advance our knowledge of RLO protein antigens, and several proteins have been identified that could potentially be useful for diagnostic assays or for production of experimental immunostimulants.  (+info)

A PCR-based diagnostic assay for the detection of Roseovarius crassostreae in Crassostrea virginica affected by juvenile oyster disease (JOD). (5/126)

We have developed a PCR-assay for the diagnosis of juvenile oyster disease (JOD) based on the detection of Roseovarius crassostreae directly from affected oysters. Species-specific primers are used to amplify the 16S-23S rDNA internal transcribed spacer (ITS) of R. crassostreae, and confirmation of product identity is accomplished by restriction enzyme analysis. No false positives were obtained with either closely related bacterial species or from other DNAs present in oyster samples. The assay has the potential to detect as few as 10 cells of R. crassostreae per oyster when samples are taken from the inner valve surfaces of the animal. Inclusion of material from soft body surfaces is not necessary, and may reduce sensitivity approximately 10-fold. In a JOD-affected population, a positive PCR result was obtained from all oysters from which these bacteria were subsequently cultured. The assay also detected the presence of R. crassostreae in 2 oysters from which no R. crassostreae isolates were recovered. No R. crassostreae was detected by either PCR or bacteriology in oysters from a population that was not exhibiting JOD-signs. This assay is expected to advance regional disease management efforts and provide valuable insights into the disease process and epizootiology of JOD.  (+info)

Isolation by distance in the eastern oyster, Crassostrea virginica, in Chesapeake Bay. (6/126)

Intensive efforts are underway to restore depleted stocks of Crassostrea virginica in Chesapeake Bay. However, the extent of gene flow among local populations, an important force mediating the success of these endeavors, is poorly understood. Spatial and temporal population structures were examined in C. virginica from Chesapeake Bay using eight microsatellite loci. Deficits in heterozygosity relative to Hardy-Weinberg expectations were seen at all loci and were best explained by null alleles. Permutation tests indicated that heterozygote deficiency reduced power in tests of differentiation. Nonetheless, genotypic exact tests demonstrated significant levels of geographic differentiation overall, and a subtle pattern of isolation by distance (IBD) was observed. Comparisons between age classes failed to show differences in genotype frequencies, allelic richness, gene diversity, or differentiation as measured by F(ST), contrary to predictions made by the sweepstakes hypothesis. The IBD pattern could reflect an evolutionary equilibrium established because local gene flow predominates, or be influenced in either direction by recent anthropogenic activities. An evolutionary interpretation appears justified as more parsimonious, implying that local efforts to restore oyster populations will have local demographic payoffs, perhaps at the scale of tributaries or regional subestuaries within Chesapeake Bay.  (+info)

Effects of acclimation temperature and cadmium exposure on cellular energy budgets in the marine mollusk Crassostrea virginica: linking cellular and mitochondrial responses. (7/126)

In order to understand the role of metabolic regulation in environmental stress tolerance, a comprehensive analysis of demand-side effects (i.e. changes in energy demands for basal maintenance) and supply-side effects (i.e. metabolic capacity to provide ATP to cover the energy demand) of environmental stressors is required. We have studied the effects of temperature (12, 20 and 28 degrees C) and exposure to a trace metal, cadmium (50 microg l(-1)), on the cellular energy budget of a model marine poikilotherm, Crassostrea virginica (eastern oysters), using oxygen demand for ATP turnover, protein synthesis, mitochondrial proton leak and non-mitochondrial respiration in isolated gill and hepatopancreas cells as demand-side endpoints and mitochondrial oxidation capacity, abundance and fractional volume as supply-side endpoints. Cadmium exposure and high acclimation temperatures resulted in a strong increase of oxygen demand in gill and hepatopancreas cells of oysters. Cd-induced increases in cellular energy demand were significant at 12 and 20 degrees C but not at 28 degrees C, possibly indicating a metabolic capacity limitation at the highest temperature. Elevated cellular demand in cells from Cd-exposed oysters was associated with a 2-6-fold increase in protein synthesis and, at cold acclimation temperatures, with a 1.5-fold elevated mitochondrial proton leak. Cellular aerobic capacity, as indicated by mitochondrial oxidation capacity, abundance and volume, did not increase in parallel to compensate for the elevated energy demand. Mitochondrial oxidation capacity was reduced in 28 degrees C-acclimated oysters, and mitochondrial abundance decreased in Cd-exposed oysters, with a stronger decrease (by 20-24%) in warm-acclimated oysters compared with cold-acclimated ones (by 8-13%). These data provide a mechanistic basis for synergism between temperature and cadmium stress on metabolism of marine poikilotherms. Exposure to combined temperature and cadmium stress may result in a strong energy deficiency due to the elevated energy demand on one hand and a reduced mitochondrial capacity to cover this demand on the other hand, which may have important implications for surviving seasonally and/or globally elevated temperatures in polluted estuaries.  (+info)

Accumulation of paralytic shellfish poison (PSP) and biotransformation of its components in oysters, Crassostrea gigas, fed with the toxic dinoflagellate Alexandrium tamarense. (8/126)

As a part of our studies on the mechanism of uptake of paralytic shellfish poison (PSP) and the kinetics of its accumulation in bivalves, oysters Crassostrea gigas were experimentally contaminated with PSP by being fed with the toxic dinoflagellate Alexandrium tamarense for 2, 4, 6, 8 and 10 days. Temporal variations in the PSP contents and their profiles in oysters during the feeding experiment were monitored by high-performance liquid chromatography (HPLC) and the toxin profile of the oysters was compared with that of A. tamarense. Toxins excreted from the infested oysters into the seawater for 2 and 10 days were recovered and analyzed by HPLC. PSP toxicity rapidly appeared in the tissues of oysters and their toxicity levels reached 0.6 (0.3), 2.2 (1.1), 1.0 (0.5), 3.4 (1.6) and 1.1 (0.5) MU/g (nmol/g) shucked meat at 2, 4, 6, 8 and 10 days, respectively. The accumulation rates of toxin, calculated from the total amount (nmol) of toxins expressed by the total cell number fed during the exposure period and the toxicity of the oysters, were 14.1, 18.7, 5.1, 14.9 and 3.2% for 2, 4, 6, 8 and 10 days. During feeding experiments, the toxin profile of oysters changed substantially, showing marked differences from the proportions found in the toxigenic dinoflagellate used as food. The toxin components in this strain existed almost exclusively as beta-epimers, which accounted for 66.3 mol% of the total. This contrasts with the case of the oysters, where the beta-epimers represented 24.8, 29.8, 25.1, 27.3 and 25.2 mol% of the total at 2, 4, 6, 8 and 10 days, respectively. The amount of gonyautoxin-1 (GTX1) accumulated in oysters increased linearly and slowly for 8 days and the maximum content of GTX1 reached 51.3 mol%. The composition of GTX group compounds recovered from the seawater in which the oysters had been reared was a little different from that within the oyster tissues.  (+info)

LITERATURE CITED. Alfaro AC, McArdle B, Jeff AG (2010) Temporal patterns of arrival of beachcast green-lipped mussel (Perna canaliculus) spat harvested for aquaculture in New Zealand and its relationship with hydrodynamic and meteorological conditions. Aquaculture 302: 208-218. [ Links ] Barber BJ (1996) Gametogenesis of eastern oysters, Crassostrea virginica (Gmelin 1791), and Pacific oyster, Crassostrea gigas (Thunberg 1793) in disease-endemic lower Chesapeake Bay. Journal of Shellfish Research 15: 285-290. [ Links ] Barber BJ, Blake NJ (1991) Reproduction. In: Shumway SE, Parsons GJ (eds). Scallops: Biology, Ecology and Aquaculture. Elsevier, Amsterdam, pp: 394-407. [ Links ] Barber BJ , Blake NJ (2006) Reproductive physiology. In: Shumway SE , Parsons GJ (eds) Scallops: Biology, Ecology and Aquaculture. Elsevier. Amsterdam, pp: 357-416. [ Links ] Brousseau D (1995) Gametogenesis and spawning in intertidal oysters (Crassostrea virginica) from western Long Island Sound. Journal of Shellfish ...
Toxoplasma gondii has recently been recognized to be widely prevalent in the marine environment. It has previously been determined that Eastern oysters (Crassostrea virginica) can remove sporulated T. gondii oocysts from seawater and that oocysts retain their infectivity for mice. This study examined the long-term survival of T. gondii oocysts in oysters and examined how efficient oysters were at removing oocysts from seawater. Oysters in 76-L aquaria (15 oysters per aquarium) were exposed to 1 × 106 oocysts for 24 hr and examined at intervals up to 85 days postexposure (PE). Ninety percent (9 of 10) of these oysters were positive on day 1 PE using mouse bioassay. Tissue cysts were observed in 1 of 2 mice fed tissue from oysters exposed 21 days previously. Toxoplasma gondii antibodies were found in 2 of 3 mice fed oysters that had been exposed 85 days previously. In another study, groups of 10 oysters in 76-L aquaria were exposed to 1 × 105, 5 × 104, or 1 × 104 sporulated T. gondii oocysts ...
International Atomic Energy Agency, Marine Environment Laboratories, Principality of Monaco. In the framework of a program focusing on marine resource protection and management in the Caribbean, the objective of this work was to characterize As bioaccumulation in the common edible oyster Crassostrea virginica. Dissolved As (stable As + 73As as a tracer) was taken up according to saturation kinetics for all tested exposure concentrations (2-10 mg l-1), and steady-state was reached rapidly within ~1 week. A slight decrease in uptake efficiency was observed for the higher concentration tested. Whole-body depuration kinetics showed that 73As was lost according to double exponential depuration kinetics that were characterized by short-lived biological half-lives (Tb1/2s) of 0.5-0.9 d and by long-lived Tb1/2l of 8-16 d. No significant difference in 73As retention was found among different initial exposure concentrations of As. Overall, our results indicate that C. virginica bioaccumulates As ...
Pyrene (PYR) and fluorene (FLU) are among the sixteen priority Polycyclic Aromatic Hydrocarbons (PAH) of the United States Environmental Protection Agency and are both frequently detected in contaminated sites. Due to the importance of bivalve mollusks in biomonitoring programs and the scarce information on the biotransformation system in these organisms, the aim of this study was to investigate the effect of PYR and FLU at the transcriptional level and the enzymatic activities of some biotransformation systems in the Pacific oyster Crassostrea gigas, and to evaluate the histological effects in their soft tissues. Oysters C. gigas were exposed for 24 h and 96 h to PYR (0.25 and 0.5 μM) and FLU (0.6 and 1.2 μM). After exposure, transcript levels of cytochrome P450 coding genes (CYP1-like, CYP2-like, CYP2AU2, CYP356A1, CYP17α-like), glutathione S tranferase genes (omega GSTO-like and microsomal, MGST-like) and sulfotransferase gene (SULT-like), and the activity of ethoxyresorufin O-deethylase ...
The Fox genes encode a group of transcription factors that contain a forkhead domain, which forms a structure known as a winged helix. These transcription factors play a crucial role in several key biological processes, including development. High-degree identity in the canonical forkhead domain has been used to divide Fox proteins into 23 families (FoxA to FoxS). We surveyed the genome of three spiralians, the oyster Crassostrea gigas, the limpet Lottia gigantea, and the annelid Capitella teleta. We identified 25 C. gigas fox genes, 21 L. gigantea fox genes, and 25 C. teleta fox genes. The C. gigas fox and L. gigantea fox genes represented 19 of the 23 families, whereas FoxI, Q1, R, and S were missing. The majority of the Fox families were observed within the C. teleta fox genes, with the exception of FoxR and S. In addition, the foxAB-like gene, foxY-like gene, and foxH gene were also present in the three genomes. The conserved FoxC-FoxL1 cluster, observed in mammals, was also found in C. ...
Glyphosate-based herbicides are extensively used and can be measured in aquatic ecosystems, including coastal waters. The effect of glyphosate on non-target organisms is an issue of worldwide concern. The aim of this study was to investigate the effects of subchronic exposure to glyphosate in juvenile oysters, Crassostrea gigas. Yearling oysters were exposed to three concentrations of glyphosate (0.1, 1 and 100μgL(-1)) for 56days. Various endpoints were studied, from the individual level (e.g., gametogenesis and tissue alterations) to the molecular level (mRNA quantification), including biochemical endpoints such as glutathione-S-transferase (GST) and catalase activities and malondialdehyde content. No mortality and growth occurred during the experiment, and individual biomarkers revealed only slight effects. The levels of gene expression significantly increased in oysters exposed to the highest glyphosate concentration (GST and metallothioneins) or to all concentrations (multi-xenobiotic ...
Were working on a project with Washington Department of Natural Resources (DNR) Micah Horwith to identify potential proteomic biomarkers in geoduck (Panopea generosa) and Pacific oyster (Crassostrea gigas). One aspect of the project is how to best conduct sampling of juvenile geoduck (Panopea generosa) and Pacific oyster (Crassostrea gigas) to minimize changes in the proteome of ctenidia tissue during sampling. Generally, live animals are shucked, tissue dissected, and then the tissue is snap frozen. However, Micahs crew will be collecting animals from wild sites around Puget Sound and, because of the remote locations and the means of collection, will have limited tools and time to perform this type of sampling. Time is a significant component that will have great impact on proteomic status in each individual.. As such, Micah and crew wanted to try out a different means of sampling that would help preserve the state of the proteome at the time of collection. Micah and crew have collected ...
The aim of the present study is to determine presence of Plasmid-R in isolated bacteria of C. virginica, during its process of collection, distribution, commercialization, and consumption in Alvarado, Veracruz lagoon.
Response to divergent selection for high and low survival during the summer period, from July to October, was investigated in juvenile (six-month-old) Pacific oysters, Crassostrea gigas, by...
The protozoan oyster parasite Perkinsus marinus causes extensive mortality in eastern oyster (Crassostrea virginica) populations during summer and fall across much of the oysters distribution. Despite more than 40 yr of ...
Perkinsus marinus infection intensity was measured in eastern oysters Crassostrea virginica collected in October and December 1993, and March, May, and July 1994 from 3 U.S. sites: Apalachicola Bay (FL), Chesapeake Bay (VA), and Oyster Bay (Mr). Gill, mantle, digestive gland. adductor muscle, hemolymph, and remaining tissue (including gonadal material and rectum) were dissected from 20 oysters from each site at each collection time. Samples were separately diagnosed for P. marin us infections by incubation in Rays Fluid Thioglycollate Medium (RFTM) and subsequent microscopic quantification of purified enlarged hypnospores. At all sampling times and sites, average P. marinus infection intensity (g wet wt tissue(-1) or ml hemolymph(-1)) was lowest in hemolymph samples, and generally highest in the digestive gland. Perkinsus marinus prevalence was 100% at both FL and NY sites for each of the 5 collection times, and, for the VA site, was less than 100% in only 1 month (May 1994). Seasonal intensity
Huge mortality outbreaks affecting Pacific oysters (Crassostrea gigas) spat/juveniles are sometimes related to the detection of a herpesvirus referred to as ostreid herpesvirus sort 1 (OsHV-1). On this work, experimental an infection trials of C. gigas spat with OsHV-1 have been carried out utilizing two contrasted Pacific oyster households for his or her susceptibility to viral.... ...
Huge mortality outbreaks affecting Pacific oysters (Crassostrea gigas) spat/juveniles are sometimes related to the detection of a herpesvirus referred to as ostreid herpesvirus sort 1 (OsHV-1). On this work, experimental an infection trials of C. gigas spat with OsHV-1 have been carried out utilizing two contrasted Pacific oyster households for his or her susceptibility to viral.... ...
We have developed a PCR-assay for the diagnosis of juvenile oyster disease (JOD) based on the detection of Roseovarius crassostreae directly from affected oysters. Species-specific primers are used to amplify the 16S-23S rDNA internal transcribed spacer (ITS) of R. crassostreae, and confirmation of product identity is accomplished by restriction enzyme analysis. No false positives were obtained with either closely related bacterial species or from other DNAs present in oyster samples. The assay has the potential to detect as few as 10 cells of R. crassostreae per oyster when samples are taken from the inner valve surfaces of the animal. Inclusion of material from soft body surfaces is not necessary, and may reduce sensitivity approximately 10-fold. In a JOD-affected population, a positive PCR result was obtained from all oysters from which these bacteria were subsequently cultured. The assay also detected the presence of R. crassostreae in 2 oysters from which no...
In the last decade, a paradigm shift has emerged in comparative immunology. Invertebrates can no longer be considered to be devoid of specific recognition and immune memory. However, we still lack a comprehensive view of these phenomena and their molecular mechanisms across phyla, especially in terms of duration, specificity, and efficiency in a natural context. In this study, we focused on a Lophotrochozoan/virus interaction, as antiviral priming is mostly overlooked in molluscs. Juvenile Crassostrea gigas oysters experience reoccurring mass mortalities events from Ostreid herpes virus 1 with no existing therapeutic treatment. Our results showed that various nucleic acid injections can prime oysters to trigger an antiviral state ultimately protecting them against a subsequent viral infection. Focusing on poly(I:C) as elicitor, we evidenced that it protected from an environmental infection, by mitigating viral replication. That protection seemed to induce a specific antiviral response as poly(I:C) fails
In the last decade, a paradigm shift has emerged in comparative immunology. Invertebrates can no longer be considered to be devoid of specific recognition and immune memory. However, we still lack a comprehensive view of these phenomena and their molecular mechanisms across phyla, especially in terms of duration, specificity, and efficiency in a natural context. In this study, we focused on a Lophotrochozoan/virus interaction, as antiviral priming is mostly overlooked in molluscs. Juvenile Crassostrea gigas oysters experience reoccurring mass mortalities events from Ostreid herpes virus 1 with no existing therapeutic treatment. Our results showed that various nucleic acid injections can prime oysters to trigger an antiviral state ultimately protecting them against a subsequent viral infection. Focusing on poly(I:C) as elicitor, we evidenced that it protected from an environmental infection, by mitigating viral replication. That protection seemed to induce a specific antiviral response as poly(I:C) fails
Borrego, J.J., Morinigo, M.A., de Vicente, A., Cornax, R., Romero, P. 1987. Coliphages as an indicator of fecal pollution in water. Its relationship with indicator and pathogenic microorganisms. Water Research. 12: 1473-1480.. Bricelj, V.M and Shumway, S.E. 1998. Paralytic Shellfish Toxins in Bivalve Molluscs: Occurrence, Transfer Kinetics, and Biotransformation. Reviews in Fisheries Science. 6: 315-383.. Caplenas, N.R. and Kanarek, M.S. 1984. Thermotolerant non-fecal source Klebsiella pneumonia: validity of the fecal coliform test in recreational waters. American Journal of Public Health. 74: 1273-1275.. Dancer, D., Rangdale, R.E., Lowther, J.A., Lees, D.N. 2010. Human Norovirus RNA Persists in Seawater under Simulated Winter Conditions but Does Not Bioaccumulate Efficiently in Pacific Oysters (Crassostrea gigas). Journal of Food Protection. 73: 2123-2127.. Food and Drug Administration (FDA). 2005. Vibrio parahaemolyticus risk assessment: quantitative risk assessment on the public health impact ...
Two cases of haplosporidian infection occurred during 1993 in Pacific oysters Crassostrea gigas from the French Atlantic coast. The localization and ultrastructure of the plasmodia are described. In situ hybridization of infected tissue sections was conducted with DNA probes for oyster-infecting haplosporidians. The Haplosporidium nelsoni-specific DNA probe MSX1347 hybridized with the C. gigas parasite, and the H. costale-specific probe SSO1318 did not hybridize. Total genomic DNA was extracted from the infected tissue sections for polymerase chain reaction (PCR) amplification of the haplosporidian. PCR amplifications with H. nelsoni-specific primers and with universal actin primers did not yield the expected products of 573 and 700 bp, respectively. A series of primers was designed to amplify short regions of small subunit ribosomal DNA (SSU rDNA) from most haplosporidians. The primers encompass a highly variable region of the SSU rDNA and did not amplify oyster DNA. PCR amplification of the ...
ABSTRACT: An ultrastructural study was carried out on Mikrocytos mackini, the cause of Denman Island disease in Pacific oysters Crassostrea gigas in western Canada. Three forms were identified, quiescent cells (QC), vesicular cells (VC) and endosomal cells (EC). QC occurred in the vesicular connective tissue (VCT), haemocytes (hyalinocytes), adductor and heart myocytes, and extracellularly. They had a central round to ovoid nucleus, ,7 cisternae of inactive nuclear membrane-bound Golgi, few vesicles and lysosome-like bodies. VC were rarely extracellular and usually occurred in adductor and heart myocytes, in close association with host cell mitochondria. The contents of the host cell mitochondria appeared to pass through a tubular extension into the cytoplasm of the parasite. Cytoplasmic vesicles resembled the tubular structure in appearance and size. EC occurred in the VCT, in haemocytes and extracellularly. They had a dilated nuclear membrane, sometimes containing a looped membranous structure ...
Increasing evidences have demonstrated that the invertebrate gill is a predominant tissue participating in the immune response during pathogen challenge. In the present study, the hematopoiesis and immune activities in gill of Pacific oyster Crassostrea gigas were investigated. Stem-like cells with big nuclei and thin cytoplasm were found in the tubules of gill filaments, where DNA synthesis is ac ...
Increasing evidences have demonstrated that the invertebrate gill is a predominant tissue participating in the immune response during pathogen challenge. In the present study, the hematopoiesis and immune activities in gill of Pacific oyster Crassostrea gigas were investigated. Stem-like cells with big nuclei and thin cytoplasm were found in the tubules of gill filaments, where DNA synthesis is ac ...
Hypoxia-inducible factor (HIF), a critical member of the basic-helix-loop-helix (bHLH)-containing Per-Arnt-Sim (PAS) protein family, is a master transcription factor involved in maintaining oxygen homeostasis. In the present study, we isolated and characterized a novel bHLH-PAS family member, CgHIFα-like gene, from the Pacific oyster Crassostrea gigas, and determined its importance during hypoxia stress. The 3020-bp CgHIFα-like cDNA encoded a protein of 888 amino acids. The predicted CgHIFα-like amino acid sequence was conserved in the N-terminal bHLH, PAS, and PAC domains (but not in the C-terminal domain) and was most closely related to the HIF family in the bHLH-PAS protein phylogenic tree ...
Schwartz, Julie , Emilie Réalis-Doyelle, Marie-Pierre Dubos, Benjamin Lefranc, Jérôme Leprince, et Pascal Favrel. 2019. « Characterization Of An Evolutionarily Conserved Calcitonin Signalling System In A Lophotrochozoan, The Pacific Oyster (Crassostrea Gigas) ». The Journal Of Experimental Biology 222 (13): jeb201319. doi:10.1242/jeb.201319. http://jeb.biologists.org/lookup/doi/10.1242/jeb.201319 ...
Barber, B.J., R.B. Carnegie and C.V. Davis. 1996. Effect of timing of seed deployment on growth and mortality of oysters, Crassostrea virginica, affected by Juvenile Oyster Disease (JOD). Journal of the World Aquaculture Society 27: 443-448.. Barber, B.J., C.V. Davis and M.A. Crosby. 1998. Cultured oysters, Crassostrea virginica, genetically selected for fast growth in the Damariscotta River, Maine, are resistant to mortality caused by Juvenile Oyster Disease (JOD). Journal of Shellfish Research 17: 1171-1175.. Barber, B., C. Davis and R. Hawes. 1998. Genetic selection of oysters for fast growth and disease resistance in Maine. Abstracts of the First Annual Northeast Aquaculture Conference and Exposition, Rockport, Maine, USA, November 18-19, 1998. pp. 78-79 (Abstract). Barber, B.J., C.V. Davis, R.B. Carnegie and K.J. Boettcher. 2000. Management of Juvenile Oyster Disease (JOD) in Maine. Journal of Shellfish Research 19: 641. (Abstract).. Boardman, C.L., A.P. Maloy and K.J. Boettcher. 2008. ...
Oyster extracts have been reported to have many bioactive peptides. But the function of oyster peptides produced by proteolysis is still unknown. In this study, the oligopeptide-enriched hydrolysates from oyster (Crassostrea gigas) were produced using the protease from Bacillus sp. SM98011 at laboratory level, and scaled up to pilot (100 L) and plant (1,000 L) levels with the same conditions. And the antitumor activity and immunostimulating effects of the oyster hydrolysates in BALB/c mice were investigated. The growth of transplantable sarcoma-S180 was obviously inhibited in a dose-dependent manner in BALB/c mice given the oyster hydrolysates. Mice receiving 0.25, 0.5 and 1 mg/g of body weight by oral gavage had 6.8%, 30.6% and 48% less tumor growth, respectively. Concurrently, the weight coefficients of the thymus and the spleen, the activity of natural killer (NK) cells, the spleen proliferation of lymphocytes and the phagocytic rate of macrophages in S180-bearing mice significantly increased after
Oyster and Clam Genetics. The goal of these projects is to develop and utilize molecular genetic markers for aquaculture species including the eastern oyster, Crassostrea virginica, the hard clam, Mercinaria mercenaria and the Asian oyster Crassostrea ariakensis, which is being considered for introduction into the Chesapeake Bay. The molecular markers are being used for population genetic analyses, genetic tracking of oyster restoration efforts with hatchery reared stocks and examination of the genetic interactions between hatchery stocks and wild populations. In addition, these markers provide molecular markers for genetic maps and information to facilitate breeding programs allowing for rapid development of a wide variety of strains and breeds with the long term goal of genetically improved strains for aquaculture and fishery replenishment ...
The purpose of this study was to examine the responses of the oyster C. gigas to oxygen levels at subcellular and whole-organism levels. Two experiments were carried out. The first experiment was...
PESSATTI, Tomás B; TANIGUCHI, Satie; BICEGO, Marcia Caruso; et al. Upregulation of biotransformation genes in gills of oyster Crassostrea brasiliana exposed in situ to urban effluents, FlorianópolisBay, Southern Brazil. Ecotoxicology and Environmental Safety, Amsterdam, v. 131, p. 172-180, 2016. Disponível em: < http://dx.doi.org/10.1016/j.ecoenv.2016.04.003 > DOI: 10.1016/j.ecoenv.2016.04.003 ...
Hemocytes mediate a series of immune reactions essential for bivalve survival in the environment, however, the impact of harmful algal species and their associated phycotoxins upon bivalve immune system is under debate. To better understand the possible toxic effects of these toxins, Crassostrea gigas hemocytes were exposed to brevetoxin (PbTx-2). Hemocyte viability, monitored through the neutral red retention and MTT reduction assays, and apoptosis (Hoechst staining) remained unchanged during 12 h of exposure to PbTx-2 in concentrations up to 1000 µg/L. Despite cell viability and apoptosis remained stable, hemocytes incubated for 4 h with 1000 µg/L of PbTx-2 revealed higher expression levels of Hsp70 (p | 0.01) and CYP356A1 ( p | 0.05) transcripts and a tendency to increase FABP expression, as evaluated by Real-Time quantitative PCR. The expression of other studied genes (BPI, IL-17, GSTO, EcSOD, Prx6, SOD and GPx) remained unchanged. The results suggest that the absence of cytotoxic effects of PbTx
Tandem and interspersed repetitive DNA sequences make up a large part of eukaryotic genomes, being present also in bivalve molluscs (class Bivalvia). Recently sequenced genome of Crassostrea gigas shows high abundance of repetitive sequences (36 %). In this work, using bioinformatic approach, 10 most abundant types of tandemly repeated sequences were found. Taking into account monomer lengths typical for satellite DNA and the ability of forming long arrays, these tandem repetas are potentially new satellite DNAs. On the other hand, they are quite special in being inserted into transposons. In fact, a detailed analysis of their flanking regions showed that they bear structural characteristics typical for non - autonomous mobile genetic elements of the Helitron superfamily. The presence of such elements was investigated in the related species Ostrea edulis. A close connection between Helitrons and tandem repeats has been identified and two models for satellite spreading from transposable elements ...
The effects of hypoxia and anoxia on oyster (Crassostrea virginica) larval settlement, juvenile growth, and juvenile survival were studied. Settlement was reduced significantly (P | 0.05) in hypoxic treatments, as compared to normoxic treatments , and almost no settlement took place in anoxic treatments. After 96 h, 38% and 4% of the larvae placed in hypoxic and anoxic treatments had settled, while 79% settled in normoxic treatments. In the first 144 h after settlement, juveniles in hypoxic treatments grew one third as much as those in normoxic treatments, while juveniles in anoxic treatments did not grow at all. Median mortality times of recently settled juveniles in hypoxic and anoxic treatments were 131 h and 84 h, respectively. We conclude that hypoxic and anoxic waters have potentially detrimental effects on oyster settlement and recruitment.
Media supplements have been investigated for their influence on the viability of primary cell cultures from the heart of Crassostrea gigasoysters. Soluble factors of vertebrate origin were tested,...
The effects of storage on the microbial quality of slipper oysters, Crassostrea iredalei, were examined. Oysters were stored at room temperature (24°C), under a blanket of ice (3-4 C), chilled (4-C) and frozen (-25°C) until they spoiled. The shelf life of oysters stored at room temperature was only two days. Oysters held under a blanket of ice had a shelf life of 14 days and chilled oysters, 22 days. Frozen oysters remained in good condition over the 64 day storage period. The initial total aerobic bacterial count of oysters was 105cfu/g. Counts for frozen oysters decreased by 1 log (104) while counts for oysters stored at other temperatures increased by 2-4 log (107-109). Bacterial typing of 50 randomly-picked colonies made every four days showed Pseudomonas to be the predominant spoilage organism. Total and fecal coliform counts did not increase even for oysters held at room temperature. Typical Staphylococcus aureaus colonies were isolated but were shown to be non-pathogenic by the ...
Perkinsus marinus ATCC ® 50771™ Designation: LA9-8 [LA-9-8] Isolation: clone derived from strain LA9 (ATCC 50770), which came from eastern oyster, Crassostrea virginica, Louisiana Gulf Coast
Perkinsus marinus ATCC ® 50773™ Designation: LA21 [LA-21] Isolation: eastern oyster, Crassostrea virginica, LA, Gulf Coast
ABSTRACT: The pseudolamellibranch is the only main bivalve particle processing system whose mechanisms of pseudofeces rejection on the mantle have not been elucidated. To this end, the entire mantle surface and underlying tissue characteristics were investigated in the oysters Crassostrea virginica and C. gigas, using scanning electron microscopy and histology, as well as observations of particle transport on half-shell preparations. Pseudofeces transport is effected by short simple cilia atop specialized radial ridges, which extend from the gill-mantle junction near the adductor muscle to the mantle edges. The histology of the ridges is characterized by a densely-ciliated pseudostratified epithelium and numerous acid mucopolysaccharide (AMPS)-containing mucocytes, and differs markedly from that of the inter-ridge regions which present a cuboidal epithelium containing few mucocytes and isolated tufts of long simple cilia. In contrast to the pseudofeces transport (infrabranchial) region of the ...
p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.,/p> ,p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.,/p> ,p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).,/p> ,p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x,sup>64,/sup> + x,sup>4,/sup> + x,sup>3,/sup> + x + 1. The algorithm is described in the ISO 3309 standard. ,/p> ,p class=publication>Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.,br /> ,strong>Cyclic redundancy and other checksums,/strong>,br /> ,a href=http://www.nrbook.com/b/bookcpdf.php>Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993),/a>),/p> Checksum:i ...
Blooms of toxin-producing microalgae have significant socioeconomic and ecologic impacts.. From an economic point of view, they make certain cultivated and/or fished marine species unfit for consumption. This sometimes has major consequences for human activities directly or indirectly linked to shellfish farming.. From an ecological point of view, toxic microalgae disrupt the balance of natural or farmed populations by causing mortality or problems with recruitment.. Some toxic microalgae blooms produce paralysing phycotoxins that can then contaminate a proportion of oyster production.. The accumulation of toxins in oysters can prove poisonous or even fatal to consumers. The level of toxin is different for each shellfish: tolerance of phycotoxins varies within a single oyster population.. In this context, the ACCUTOX project is aimed at observing, analysing and improving understanding of the origins of the accumulation of paralysing phycotoxins in the oyster Crassostrea gigas.. ...
In the United States of America, oyster production is an important component of the seafood economy in many communities in coastal states. The severe impact of disease outbreaks and mass mortality of oyster larvae in hatcheries impacts production, since the oyster industry is largely dependent on hatchery and nursery production. The use of probiotics has been proposed as a potential preventative measure to limit the impact of bacterial diseases in shellfish hatcheries. In previous laboratory studies, the probiotic bacteria Phaeobacter inhibens S4 and Bacillus pumillus RI06-95 improved the survival of eastern oyster (Crassostrea virginica) larvae against the pathogens Vibrio tubiashii RE22 (now V. coralliilyticus) and Roseovarius crassostreae CV919-312T (now Alliroseovarius crassostreae). The aim of this study is to evaluate the efficacy of candidate probiotics P. inhibens S4 and B. pumillus RI06-95 for disease prevention in shellfish hatcheries. Chapter 1 provides an overview of bacterial disease in
We are investigating the potential impacts of PFAS (toxins) on oyster populations in Mobile Bay. Variation in PFAS body burden in relation to environmental conditions will be measured in oysters collected from the bay. In addition, we are quantifying the physiological consequences of these toxins to respiration and growth of oysters. Stakeholders will use our results to inform management of oyster populations, water quality, and food safety protocols. ...
This is a review of existing published global/regional strategies to avoid entrance and survival of Ostreid herpesvirus 1 (OsHV-1) in hatchery and nursery systems producing oysters Crassostrea gigas. Author: CJ Rodgers, IRTA
Chu, F.-L. E., E. D. Lund, et al. 2006. Effects of triclosan on the oyster parasite, Perkinsus marinus and its host, the eastern oyster, Crassostrea virginica: A comparison at different temperatures. 98 Annual Meeting National Shellfisheries Association, Monterey, CA (USA), 26-30 Mar 2006. Journal of Shellfish Research 25(2): 719 ...
Proteins, Sea Urchins, Electrophoresis, Oyster, Oysters, Genes, Genome, Genomes, DNA, RNA, Oxygen, Lung, Mouse, Collagen, and Inhibition
Pyrene (PYR) and fluorene (FLU) are among the sixteen priority Polycyclic Aromatic Hydrocarbons (PAH) of the United States Environmental Protection Agency and are both frequently detected in contaminated sites. Due to the importance of bivalve mollusks in biomonitoring programs and the scarce information on the biotransformation system in these organisms, the aim of this study was to investigate the effect of PYR and FLU at the transcriptional level and the enzymatic activities of some biotransformation systems in the Pacific oyster Crassostrea gigas, and to evaluate the histological effects in their soft tissues. Oysters C. gigas were exposed for 24 h and 96 h to PYR (0.25 and 0.5 µM) and FLU (0.6 and 1.2 µM). After exposure, transcript levels of cytochrome P450 coding genes (CYP1-like, CYP2-like, CYP2AU2, CYP356A1, CYP17α-like), glutathione S tranferase genes (omega GSTO-like and microsomal, MGST-like) and sulfotransferase gene (SULT-like), and the activity of ethoxyresorufin O-deethylase ...
The accumulation of low levels (0.002 to 0.18 PFU/ml) of both feces-associated and monodispersed poliovirus by oysters (Crassostrea virginica or C. gigas) and clams (Mercenaria mercenaria) was investigated. These levels were chosen to duplicate the conditions present in light to moderately polluted waters. Experiments were performed in both small- and large-scale flowing seawater systems, developed to mimic the natural marine habitats of shellfish. Under these experimental conditions, viral accumulation by physiologically active shellfish was only noted when water column concentrations exceeded approximately 0.01 PFU/ml. Bioaccumulation increased with increasing concentrations of both monodispersed and feces-associated viruses. At virus concentrations below this level, viruses were seldom detected in either clams or oysters. Evidence indicated that the lack of accumulation was not the result of inefficient extraction or detection methods. The modified Cat-Floc-beef extract procedure used in the ...
Nutrition Facts For Cooked Eastern Oysters (Farmed) - Get a bar chart of the top 10 nutrients, and click to see an expanded list of over 151 nutrients, including amino acids.
Resistance of Pacific Oyster Larvae and Juveniles to the Effects of Ocean Acidification Chris LangdonHatfield Marine Science CenterCoastal Oregon Marine Experiment StationOregon State University2030 SE Marine Science DriveNewport, Oregon 97365Phone: 541-867-0231Fax: 541-867-0345Email Co-PIs: George Waldbusser, OSU; Eli Meyer, OSU
The impact of diets upon the fatty acid composition of haemocyte polar lipids and consequently upon immune parameters has been tested in the oyster Crassostrea gigas and the clam Ruditapes philippinarum. Oysters and clams were fed each of three cultured algae: Chaetoceros calcitrans, which is rich in 20:5(n-3) and 20:4(n-6) and poor in 22:6(n-3) fatty acids; T-Iso (Isochrysis sp.), which is rich in 22:6(n-3) and deficient in 20:5(n-3) and 20:4(n-6); and Tetraselmis suecica, which is deficient in 22:6(n-3) and contains only small amounts of 20:5(n-3) and 20:4(n-6). Fatty acid composition of haemocyte polar lipids was greatly affected by the diet. Oysters and clams fed C. calcitrans maintained a higher proportion of 20:5(n-3) and 20:4(n-6) in their haemocyte ...
U.S. oyster growers are strongly concerned about the spread of OsHV-1 microvariants globally. I was part of the team that first detected OsHV-1 in Tomales Bay, California. To date the virus has been detected only in oysters in Tomales Bay and an adjacent bay, and no microvariants have been found yet in U.S. waters. The California OsHV-1 causes mortalities of young Pacific oysters, but is thought to be less virulent than OsHV-1 microvariants.. Given the spread of the OsHV-1 microvariants elsewhere around the world, it may only be a matter of time until they reach U.S. coastal bays or other nonimpacted oyster growing areas. We spent the summer of 2017 conducting experiments in Tomales Bay to determine whether any cultured U.S. oysters species are resistant to OsHV-1, and soon will also conduct laboratory challenges with OsHV-1 microvariants. Once OsHV-1 is established within a bay, mass oyster deaths typically occur each year during the summer when water temperatures are warm. The situation is ...
Parameters of hemocyte populations have been considered as relevant indicators of bivalve health and are currently used in immunotoxicological studies. Hemocytes in hemolymph can be collected by puncturing either the pericardial cavity or the adductor muscle sinus with a syringe. Flow cytometry is a methodological approach that is increasingly being used in laboratories for the study of hemocyte parameters in aquatic invertebrates. However, various protocols for hemocyte processing in laboratories equipped with different types of cytometers have been published. In this context, two flow cytometers (EPICS XL4®, Beckman Coulter and FacsCalibur®, Becton Dickinson) and two sites of hemocyte collection (pericardial cavity and adductor muscle sinus) were compared for the analysis of hemocyte parameters in the Pacific oyster, Crassostrea gigas. Hemolymph cells were analyzed in terms of their number and organelle contents. Cell mortality, phagocytosis, non specific esterase, extension of the lysosomal
The total standing stock of bivalves cultured in Thau Lagoon (France) that is mainly constituted of the Pacific oyster, Crassostrea gigas, and the Mediterranean mussel, Mytilus galloprovincialis, vary between 14,000 and 20,000 tons within a year. These variations were attributed to the rearing cycle of molluscs in the lagoon but also to their growth performances. Oysters cultured in the Thau Lagoon presented the best growth rate ever reported whereas trophic conditions are low : mean concentrations in organic particulate matter and total chlorophyll a averaged 1 mg.l-1 and 1.2 µg.l-1, respectively. The development of a growth model shows that temporal pattern (i.e. seasonality) of bivalve growth is explained by water temperature and spatial pattern is ...
Develop, calibrate, and validate a Haplosporidium nelsoni submodel, to be linked to an existing Crassostrea virginica-Perkinsus marinus host-parasite population dynamics model. Assemble and quality-assure calibration and input data from Chesapeake Bay Oyster population and disease monitoring programs. Develop spatial grid interpolations to match environmental and biological data for the Chesapeake Bay.
Invasive marine invertebrates occur around the world, but are often found in harbors, yacht basins, and bays.ref As with other invasive species, hull-fouling and ballast water are the most common pathways for the spread of invasive invertebrates, along with intentional and accidental release of aquaculture species. ref. Intentional introduction of invertebrates has occurred, for example, in Hawaii where commercially important shellfish were released [e.g., mangrove crab (Scylla serrata) from Samoa, oysters (Crassostrea spp.) from San Francisco, and littleneck clams (Tapes japonicum) from Japan]. ref The impacts of these species on Hawaiian ecosystems are still not well known. ref Other examples of marine invertebrate invasives in Hawaii include the snowflake coral (Carijoa riisei), the Caribbean barnacle (Chthamalus proteus), the keyhole sponge (Mycale grandis), and the Philippine mantis shrimp (Gonodactylus falcatus). ...
Summary of the gene family classification of four related species, Cyclina sinensis, Crassostrea gigas, Lottia gigantea and Capitella teleta.Only putative pepti
Los Angeles, CA - May 16, 2017 - Worldwide Business with kathy ireland® is pleased to announce an exclusive interview with Rita Love Owens, CEO of The RLO Group, a company that exists to bridge the communication and engagement gap between brands and consumers.. Owens will explain how The RLO Group helps interpret brand messaging in order to better connect with target segments; women, family and community.. The RLO Group aligns their clients in their respective communities around initiatives and organizations whose missions match the desire to reach their target segments with authentic messaging. The company was founded in 2010 and is headquartered in Atlanta, Georgia.. Owens says that The RLO Group has a unique approach to creating trusted consumer experiences. She explains, First, you begin with transparency. Then, you add your creativity. Consumers want to have honest conversations. And you have to be sure that you take notice of that. You cant take that for granted. You cant take for ...
This is an emergent perennial herb growing from a large rhizome and producing many large leaves. An individual leaf may have a petiole nearly a meter long and a blade half a meter in length. The leaves are quite variable in shape and size, but they are often generally arrowhead-shaped. The inflorescence bears male and female flowers, as well as sterile flowers. The flower varies from whitish to greenish to yellow. The fruit is a brown berry containing a few seeds within a clear gelatinous pulp. Large number of seeds can accumulate in the soil of wetlands.[4][10] Peltandra virginica is a marshland aquatic plant, growing in North America bogs, ponds, and marshes. The roots and base grow into the submerged substrate, and the leaves and inflorescences project up and out of the water. The roots form a perennial rhizome. Various forms of leaf blades have been observed, both in larger ranges and smaller individual populations. Petioles range from green to green-purple to purple with a medium green ...
Free Online Library: Classification of common oysters from North China.(Report) by Journal of Shellfish Research; Zoology and wildlife conservation Biological sciences Crassostrea Genetic aspects Identification and classification Cytochrome oxidase Properties DNA sequencers Usage Mitochondria Oysters RNA
Its an old Chesapeake tradition, paving driveways, decorating gardens and the bases of rural mailboxes with oyster shells. But it may give way to a different purpose; helping to restore the Chesapeakes decimated oyster population. Heres why.. Oyster shells are just the thing an oyster farmer needs to spread across three or four acres of leased bottom in a Chesapeake tributary to form a bed for baby oysters to attach themselves and grow. But shells are hard to come by (see: tradition and decimated population), and expensive; $3 to $4 a bushel. And thats where homeowners like Jeff and Lisa Duffy come in.. ...
The OK! Kimonos Tora spats were designed by Seymour Yang, also known as Meerkatsu.The spats are visually appealing and made with high-quality material, plus the tiger is pretty cute.
Oysters once dominated the ecosystem of the Chesapeake Bay, and it would be difficult, if not impossible, for the Bay to return to full ecological health without restoring Crassotrea virginica to its glory days of the Chesapeakes apex filterer.
The tall man and the short man on the Ghost looked up.. Hello, Taft, the short man said, with insolent familiarity. (Among the bayfarers he had gained the nickname of The Centipede on account of his long arms.) Hello, Taft, he repeated, with the same touch of insolence. Wot r you growling about now?. Those are my oysters - thats what I said. Youve stolen them from my beds.. Yer mighty wise, aint ye? was the Centipedes sneering reply. Spose you can tell your oysters wherever you see em?. Now, in my experience, broke in the tall man, oysters is oysters wherever you find em, an theyre pretty much alike all the Bay over, and the world over, too, for that matter. Were not wantin to quarrel with you, Mr. Taft, but we jes wish you wouldnt insinuate that them oysters is yours an that were thieves an robbers till you can prove the goods.. I know theyre mine; Id stake my life on it! Mr. Taft snorted.. Prove it, challenged the tall man, who we afterward learned was ...
Species definitions in plants are often less strict than they seem to be for animals. Some research from a few years ago sought to identify how I. setosa was related to other North American wild irises. They found I. setosa was most likely one of the parents (with I. virginica) of I. versicolor. I. setosa and I. virginica are both diploid with 38 (19/19) and 70 (35/35) chromosomes, respectively. The hybrid between the two species is infertile due to mis-paired chromosome sets (19/35). But like in other cases (http://the-biologist-is-in.blogspot.com/2015/01/hybrid-sterility-and-speciation.html), that infertility can be resolved by a whole genome duplication like that which appears to have happened in the ancestors of modern I. versicolor ...
Frostweed is a perennial wildflower that reaches a height of about six feet. Frostweed is native to the following states: AL, AR, DC, FL, GA, IA, IL, IN, KS, KY, LA, MD, MO, MS, NC, OH, OK, PA, SC, TN, TX, VA, and WV.
Clumping perennial with basal, elliptic to ovate shaped, pale green foliage that goes dormant after flowering; Bell shaped, nodding, shapphire blue blooms in spring; New buds emerge pink and change to blue as they mature; Prefers shade Purchase size: 1 gal ...
A Pacific oyster grown in the immaculate waters of Orcas Island, between Washington and British Columbia. Out there, they are practically immune to the vibrio
Rosenberg, G. (2010). Cypraea histrio Gmelin, 1791. In: MolluscaBase (2017). Accessed through: World Register of Marine Species at http://marinespecies.org/aphia.php/aphia.php?p=taxdetails&id=216781 on 2017-12- ...
Bouchet, P.; Gofas, S. (2015). Longchaeus acus (Gmelin, 1791). In: MolluscaBase (2017). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=215192 on 2017-12- ...
A haplotype of 23 SNPs spanning 131.6 Kb shared by all affected members of 3 linked families with restless legs syndrome was identified. The shared candidate region covers 46.9 Kb over the potassium channel-related gene KCTD18 and exons 10-13 of SPATS2L ...
This is to inform you all that Auchi poly Spat form for the 2019/2020 session is out and and it ready for sale. The price is #........ Before.
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Proteome IDi ,p>The proteome identifier (UPID) is the unique identifier assigned to the set of proteins that constitute the ,a href=http://www.uniprot.org/manual/proteomes_manual>proteome,/a>. It consists of the characters UP followed by 9 digits, is stable across releases and can therefore be used to cite a UniProt proteome.,p>,a href=/help/proteome_id target=_top>More...,/a>,/p> ...
We plan to apply the methodologies developed from our current NMFS-funded project for mtDNA markers, DNA fingerprinting, RNA probes and PCR technologies to quantify low-levels of Perkinsus marinus infections in order to fully describe the etiology of this oyster disease. Our progress in working with genetic markers of P. marinus has: Developed a sensitive PCR-based diagnostic assay for detecting P. marinus infections ; Identified an extrachromosomal relic plastid-genome in P.
The Oyster Bay Family Dentists Is An Oyster Bay, NY Cosmetic And Family Dentist Offering Implant Dentistry, Prosthetics, & More. Visit Our Lumineers Page!
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A look at the life of an oyster and a visit to an oyster farmer at Gujan-Mestras, on the Arcachon Basin, to find out, among other things, how the oyster parks…
Glenmorangie Distillery and a team of scientists from Heriot-Watt University have reached a significant milestone of returning 20,000 Native oysters to the Dornoch Firth as part of DEEP, a project focused on restoring a Native oyster reef.
Oyster has amazing benefits that include weight loss, increased bone strength, and strong immune system. Oysters are a good source of protein, vitamins and nutrients.
Oyster farmers are set to benefit from a new genetic tool that will help to prevent disease outbreaks and improve yields. The technology -- developed by scientists at the University of Edinburghs Roslin Institute -- will enable hatcheries to rapidly assess the genetic make-up of their oysters, so they can select animals with desirable characteristics from which to breed.
Where an oyster comes from really affects the way it looks and tastes, says Jeremy Sewall, chef and owner of Bostons Island Creek Oyster Bar and Row 34.
Did you know that the oyster is full of virtues? Besides being the only animal to contain vitamin C, Oyster is neither greasy nor
Made from the highest quality oyster extracts, Lee Kum Kee Oyster Sauce is perfect for any asian style dish. Available in a 18oz. and 32oz. bottle.
Eventbrite - Matunuck Oyster Bar presents Matunuck Oyster Farm Tour - Saturday, July 22, 2017 at 629 Succotash Rd, South Kingstown, RI. Find event and ticket information.
UV-H2O2 ist das am weitesten verbreitete Oxidationssystem mit nachgewiesener Wirksamkeit und einem hohen technischen Entwicklungsstand für die praktische Anwendung. Der Wirkung suspendierter Partikel in natürlichem Wasser auf die Entfernung organischer…. Read More ...
Die Astrochemie liegt im Spannungsfeld von Astronomie, Chemie und Molekularphysik. Auf der Grundlage präziser Labordaten wurde eine reichhaltige Sammlung von mehr als 200 bekannten und exotischen Molekülen im interstellaren Medium…. Read More ...
A new lawsuit charges Centraal with infringing on Networds recently patented keyword technology, in a case that could have implications for Netscapes new Smart Browser. By Chris Oakes.
While keeping the gun in what must look like a badly packed suitcase of a vagina may be a one-off event, you can be assured shes done scads of other crazy things leading up to that. This isnt the act of an otherwise rational individual momentarily overcome with emotion. Youve got to build up to that sort of thing.. Therefore, if we assume that this is only a single episode of bizarre behavior in a series of bizarre behaviors that has been escalating steadily over the years, we can conclude, with a high degree of certainty, that everybody in that house is crazy as fuck. None of this hes crazier or shes crazier bullshit. Everybody involved is completely loony.. I guarantee that her neighbors, upon hearing the news, thought about it for .7ms before deciding that, yes, this is exactly the sort of thing they had in mind when telling their children to stay away from that lady. Nobody will be surprised at all.. ...
A son of late Chinese industrialist Henry Fok has taken his brother to court over their fathers multibillion dollar estate, the latest in a string of high-profile legal squabbles among the citys wealthiest families as their patriarchs age or die.
The African phone giant is close to ending a row with the West African nation over dividends. A face-saving deal will repair ties in its biggest market. After protesting its innocence, a reported $800 mln settlement looks excessive. But too little will keep MTN in Abujas sights.
Broadcasters took a big step toward eliminating free TV shows on the Web after they blocked access to their programming online this month to enforce their
Crassostrea nippona. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World ... 1930 is a synonym of Crassostrea nippona (Seki, 1934) Xenophora tenuis Hirase, 1934 is a synonym of Xenophora tenuis Fulton, ...
The eastern oyster (Crassostrea virginica)-also called the Atlantic oyster, American oyster, or East Coast oyster-is a species ... Like all oysters, Crassostrea virginica is a bivalve mollusk with a hard calcium carbonaceous shell that protects it from ... "Crassostrea virginica, Introduced Marine Species of Hawaii Guidebook". www2.bishopmuseum.org. Retrieved 2021-01-01. Newell, R.I ... "Crassostrea virginica". Smithsonian Marine Station at Fort Pierce. Retrieved 6 December 2011. "Aquatic Reefs". About the Bay. ...
"Eastern Oyster (Crassostrea virginica)". Tpwd.state.tx.us. November 10, 2011. Bradley, James (February 2021). "A reef history ... A common species of oysters used in oyster restoration is the Eastern American oyster (Crassostrea virginica), which is also ... Crassostrea virginica) in the Mission-Aransas Estuary, TX, USA". PLOS ONE. 7 (7): e40839. Bibcode:2012PLoSO...740839B. doi: ...
"Crassostrea iredalei (Faustino, 1932)". SeaLifeBase. Retrieved 15 December 2018.. ...
Who Killed Crassostrea virginica? The Fall and Rise of Chesapeake Bay Oysters (2011), Maryland Sea Grant College (60 min. film ... Crassostrea gigas), which is resistant to this disease. MSX was first described in 1957, when it caused serious mortalities in ... Crassostrea virginica)". Marine Biotechnology. 2 (5): 456-465. doi:10.1007/s101260000021. PMID 11246412. "Haplosporidium ...
"Crassostrea gigas (Pacific oyster)". www.cabi.org. "Mytilus galloprovincialis (Mediterranean mussel)". www.cabi.org. "Deer: ... Crassostrea gigas (Pacific oyster) Crepidula fornicata (Common slipper shell) Deroceras invadens (tramp slug) Dreissena ...
Once the native oyster beds had been exhausted farmers began to import and plant the seeds of Pacific Oyster Crassostrea gigas ... Crassostrea gigas; and Pacific Razor Clams, Siliqua patula, in the State of Washington". NOAA Technical Report NMFS. 128: 90. ...
"Crassostrea iredalei (Faustino, 1932)". SeaLifeBase. Retrieved 15 December 2018. Zhang, G.; Fang, X.; Guo, X.; Li, L.; Luo, R ... Species in this genus have been moved from Crassostrea after it was found to be paraphyletic. Extant species include: Magallana ...
Crassostrea gigas) Annelida • Polychaete worm (Capitella teleta) • Common brandling worm (Eisenia fetida) Fromm, Bastian; ...
Nearly all octopuses are predatory; bottom-dwelling octopuses eat mainly crustaceans, polychaete worms, and other molluscs such as whelks and clams; open-ocean octopuses eat mainly prawns, fish and other cephalopods.[71] Major items in the diet of the giant Pacific octopus include bivalve molluscs such as the cockle Clinocardium nuttallii, clams and scallops, and crustaceans such as crabs and spider crabs. Prey that it is likely to reject include moon snails, because they are too large, and limpets, rock scallops, chitons and abalone, because they are too securely fixed to the rock.[70]. A bottom-dwelling octopus typically moves among the rocks and feels through the crevices. The creature may make a jet-propelled pounce on prey and pull it towards the mouth with its arms, the suckers restraining it. Small prey may be completely trapped by the webbed structure. Octopuses usually inject crustaceans like crabs with a paralysing saliva then dismember them with their beaks.[71][72] Octopuses feed on ...
... are gathered recreationally and commercially but strict catch limits are set for both. For recreational fishermen this is ten pāua per person per day. The minimum legal size for caught pāua is 125 mm for Haliotis iris and 80 mm for Haliotis australis, measured in a straight line at the greatest length of the shell.[2] The exception is Haliotis iris taken from the Amateur Taranaki Paua Fishery Area, which is the area of Taranaki coast bounded by the Awakino River in the north and the Whanganui River in the south, in which the minimum legal size is 85 mm. However, pāua caught in this area cannot be taken east of State Highway 4 unless they meet the 125 mm limit.[3] In addition, no single person may have in their possession at any time (including on land) more than 20 pāua or more than 2.5 kg of shucked (shell removed) pāua. Pāua can only be caught by free diving; it is illegal to dive for pāua using scuba equipment. All pāua must remain un-shucked until they are on the land side of ...
P. canaliculus is endemic to New Zealand. When grown for aquaculture there, it is marketed under the trademark name Greenshell.[6] This industry produces over 140,000 tonnes annually and in 2009 was valued in excess of NZ$250 million.[7] The aquaculture of the New Zealand greenshell mussel relies heavily on the production of mussel seed, or spat, by wild mussel populations.[8] Around 270 tonnes of wild spat which is attached to beach-cast seaweed are collected from Ninety Mile Beach in northern New Zealand each year to supply the aquaculture industry.[9] Nowhere else in the country are such large quantities of mussel-covered seaweed washed ashore.[9] The density of spat varies from 200 to 2 million per kilogram of seaweed.[10] This single beach provides around 80% of the seed mussels required for this aquaculture industry.[8] The remaining 20% is caught using fibrous ropes which are suspended in the sea near mussel farms.[11] Even with this industry's heavy dependency on wild spat, the ...
Like other cephalopods, octopuses can distinguish the polarisation of light. Colour vision appears to vary from species to species, for example being present in O. aegina but absent in O. vulgaris.[49] Researchers believe that opsins in the skin can sense different wavelengths of light and help the creatures choose a coloration that camouflages them, in addition to light input from the eyes.[50] Other researchers hypothesise that cephalopod eyes in species which only have a single photoreceptor protein may use chromatic aberration to turn monochromatic vision into colour vision, though this sacrifices image quality.[51] This would explain pupils shaped like the letter U, the letter W, or a dumbbell, as well as explaining the need for colourful mating displays.[52] Attached to the brain are two special organs called statocysts (sac-like structures containing a mineralised mass and sensitive hairs), that allow the octopus to sense the orientation of its body. They provide information on the ...
a b c (in Czech) Horsák M., Juřičková L., Beran L., Čejka T. & Dvořák L. (2010). "Komentovaný seznam měkkýšů zjištěných ve volné přírodě České a Slovenské republiky. [Annotated list of mollusc species recorded outdoors in the Czech and Slovak Republics]". Malacologica Bohemoslovaca, Suppl. 1: 1-37. PDF. ...
In classical Greece, Aristotle (384-322 BC) commented on the colour-changing abilities of the octopus, both for camouflage and for signalling, in his Historia animalium: "The octopus ... seeks its prey by so changing its colour as to render it like the colour of the stones adjacent to it; it does so also when alarmed."[153] Aristotle noted that the octopus had a hectocotyl arm and suggested it might be used in sexual reproduction. This claim was widely disbelieved until the 19th century. It was described in 1829 by the French zoologist Georges Cuvier, who supposed it to be a parasitic worm, naming it as a new species, Hectocotylus octopodis.[154][155] Other zoologists thought it a spermatophore; the German zoologist Heinrich Müller believed it was "designed" to detach during copulation. In 1856 the Danish zoologist Japetus Steenstrup demonstrated that it is used to transfer sperm, and only rarely detaches.[156] Octopuses offer many possibilities in biological research, including their ability ...
nov., isolated from an oyster (Crassostrea gigas)". International Journal of Systematic and Evolutionary Microbiology. 65 (Pt_9 ...
... recurvum grows on Crassostrea virginica reefs. These reefs appear off the coast of the Gulf of Mexico. They tend to ...
... and Crassostrea gigas is considered by part of the scientific community to be the proper denomination as an accepted ... It was previously placed in the genus Crassostrea; from the Latin crass meaning "thick", ostrea meaning "oyster", ...
Crassostrea and Saccostrea live mainly in the intertidal zone, while Ostrea is subtidal. The hard surfaces of oyster shells and ... Evidence suggests it was brought to the US when Crassostrea gigas, Pacific oyster variety, was introduced to Delaware Bay. ... This disease mainly affects Pacific oysters (Crassostrea gigas). The disease was first described in 1960 near Denman Island off ... For example, the eastern oyster (Crassostrea virginica) was introduced to California waters in 1875, while the Pacific oyster ...
... is a bacterium from the genus of Tenacibaculum which has been isolated from the oyster Crassostrea ... nov., isolated from the Pacific oyster, Crassostrea gigas". International Journal of Systematic and Evolutionary Microbiology. ...
Frierman EM, Andrews JD (February 1976). "Occurrence of hematopoietic neoplasms in Virginia oysters (Crassostrea virginica)". ...
Survival rates are low at about 5%. The Pacific oyster (Crassostrea gigas) is cultivated by similar methods but in larger ... "Cultured Aquatic Species Information Programme: Crassostrea gigas (Thunberg, 1793)". FAO Fisheries and Aquaculture Department. ...
2016). One study from Brazil found that 100% of cultivated oysters, Crassostrea rhizopjorae, were infected by Nematopsis sp.. ... Protozoa, Apicomplexa) in the oyster, Crassostrea rhizophorae (Guilding, 1828), cultivated in the state of Pernambuco, Brazil. ... Histological examination of Indian oysters, Crassostrea madasensis, demonstrated hypertrophy of infected cells, leading to ... Apicomplexa: Porosporidae) infection in Crassostrea madrasensis and its associated histopathology. MBAI. 58(1): 1890-1904. doi: ...
It is ingested by its mollusc host, which is often an oyster of the genus Crassostrea. It then becomes a trophozoite, which ... The most economically important host is the eastern oyster (Crassostrea virginica). The parasite is also common in C. ... 1993). Perkinsus marinus susceptibility and defense-related activities in eastern oysters Crassostrea virginica: temperature ...
Differentiation between populations of the Portuguese oyster, Crassostrea angulata (Lamark) and the Pacific oyster, Crassostrea ... The Portuguese oyster, Crassostrea angulata, is a species of oyster found in the southwest Iberian Peninsula, closely related ... Evidence for the presence of the Portuguese oyster, Crassostrea angulata, in northern China. Journal of Shellfisheries Research ... Genetic differentiation in marine and estuarine natural populations of Crassostrea angulata. Marine Ecology Progress Series. [2 ...
Shell types include Crassostrea virginica, Mercenaria mercenaria, Tagelus plebeius, Arca sp., Donax variabilis, Geukensia ...
Crassostrea gigas (Thunberg), in 2005 at the East Frisian coast, Germany". Journal of Fish Diseases. 31 (8): 621-630. doi: ... "Viral gametocytic hypertrophy caused by a papova like virus infection in the Pacific oyster Crassostrea gigas in Korea". ... "Viral gametocytic hypertrophy of the Pacific oyster Crassostrea gigas in Ireland". Diseases of Aquatic Organisms. 83 (3): 181- ... "Viral gametocytic hypertrophy of Crassostrea gigas in France: from occasional records to disease emergence?". Diseases of ...
They were then replaced by cultivated oysters of Japanese origin, Crassostrea gigas). Today, Locmariaquérois oyster farmers are ...
The preferred host of this ectoparasite is the eastern oyster Crassostrea virginica. The thick shell is opaque The shell grows ...
Crassostrea contracta (Conrad 1865) †Crassostrea cucullaris (Lamarck 1819) †Crassostrea cuebana (Jung 1974) †Crassostrea ... Crassostrea gryphoides (Schlotheim 1813) †Crassostrea hatcheri (Ihering 1899) †Crassostrea ingens (Zittel 1864) †Crassostrea ... Crassostrea cuttackensis (Newton & Smith, 1912) Crassostrea dianbaiensis (Xia, Wu, Xiao & Yu, 2014) Crassostrea rhizophorae ( ... mangrove oyster Crassostrea virginica (Gmelin 1791) - Eastern oyster †Crassostrea alabamiensis (Lea 1833) †Crassostrea ashleyi ...
Crassostrea tulipa, the West African mangrove oyster, is a true oyster in the family Ostreidae. The mangrove oyster is found in ...
Exploding sectors mean dissipation; numbers denote fractions of mobilized reserve. Endpoints are somatic maintenance S, growth G, maturity maintenance J, maturity or reproduction R. Growth is splitted into overhead and flux fixed in tissue. Reproduction overhead is not idicated, since it is pays at conversion of buffer to eggs/foetuses. The change in reserve equals assimilation p_A minus mobilization p_C. Wet weight W_w and total energy E_W exclude the reproduction buffer in adults. Pies link to budget pages ...
Experimental bacterial infections in the oyster Crassostrea virginica. J. Invertebrate Path. 8, 505-511 (1966).Google Scholar ... Mechanisms of removal of injected microorganisms from the American oyster, Crassostrea virginica (Gmelin). Biol. Bull. 199, 273 ... Light and electron microscopy of the leucocytes of Crassostrea virginica (Mollusca: Pelecypoda). ... and histochemical characterization of encapsulating cysts in the oyster Crassostrea virginica parasitized by the cestode ...
Juvenile Crassostrea gigas oysters experience reoccurring mass mortalities events from Ostreid herpes virus 1 with no existing ... Long-lasting antiviral innate immune priming in the Lophotrochozoan Pacific oyster, Crassostrea gigas *Maxime Lafont1,2. , ... In the present study, we focused on a marine bivalve mollusc, the Pacific oyster Crassostrea gigas (now termed Magallana gigas ... Juvenile Crassostrea gigas oysters experience reoccurring mass mortalities events from Ostreid herpes virus 1 with no existing ...
Crassostrea gigas Crassostrea sikamea Heterosis Hybridization Phenotypic trait This is a preview of subscription content, log ... Huo Z, Wang Z, Yan X, Gaffney PM (2013) Fertilization, survival, and growth of Crassostrea hongkongensis ♀ × Crassostrea ... Allen SK, Gaffney PM (1993) Genetic confirmation of hybridization between Crassostrea gigas (Thunberg) and Crassostrea ... Fertilization, survival and growth of hybrids between Crassostrea gigas and Crassostrea sikamea. ...
Crassostrea virginica (Eastern oyster)Imported. Automatic assertion inferred from database entriesi ... tr,O77246,O77246_CRAVI Tropomyosin (Fragment) OS=Crassostrea virginica OX=6565 GN=tm-1 PE=2 SV=1 ...
We used high throughput pyrosequencing to characterize stomach and gut content microbiomes of Crassostrea virginica, the Easter ...
Crassostrea gigas (Pacific oyster) (Crassostrea angulata)Imported. Automatic assertion inferred from database entriesi ... tr,K1PNX0,K1PNX0_CRAGI Methionyl-tRNA synthetase, cytoplasmic OS=Crassostrea gigas OX=29159 GN=CGI_10014624 PE=3 SV=1 ...
MolluscaBase (2018). Crassostrea amasa (Iredale, 1939). Accessed through: World Register of Marine Species at: http:// ...
Denaturing gradient gel electrophoresis as a tool for the identification of commercially important Crassostrea oysters in China ...
Crassostrea gigas, we experimentally exposed individual oysters for 48 h to a PSTs producer, the dinoflagellate Alexandrium ... Figure 6. Evolution of the paralytic shellfish toxin (PST) content (μg/g DG wet weight) in the digestive gland of Crassostrea ... Figure 6. Evolution of the paralytic shellfish toxin (PST) content (μg/g DG wet weight) in the digestive gland of Crassostrea ... Show, B.I.; Battle, H.I. The gross and microscopic anatomy of the digestive tract of the oyster, Crassostrea virginica (Gmelin ...
Our previous studies showed that oyster β-thymosin originated from the mantle of the Pacific oyster, Crassostrea gigas and had ... Nam, B.H.; Seo, J.K.; Lee, M.J.; Kim, Y.O.; Kim, D.G.; An, C.M.; Park, N.G. Functional analysis of Pacific oyster (Crassostrea ... Anti-Inflammatory Activity of β-thymosin Peptide Derived from Pacific Oyster (Crassostrea gigas) on NO and PGE2 Production by ... Our previous studies showed that oyster β-thymosin originated from the mantle of the Pacific oyster, Crassostrea gigas and had ...
Macrobrachium vollenhovenii and Crassostrea tulipa) in Some Estuaries and Lagoons Along the Coast of Ghana. D. K. Essumang, C. ... Crassostrea tulipa Ostreidae) in the lagoons and river Pra estuary. However, the oysters showed an elevated mean concentration ...
... between the Pacific species Crassostrea gigas and Crassostrea ariakensis and the Atlantic Crassostrea virginica, nevertheless, ... By accepting a new genus Magallana [type species Crassostrea gigas (Thunberg, 1793)] for a clade of Pacific Crassostrea, and by ... 2010), who dated the divergence of the American oyster Crassostrea virginica from five Asian species of Crassostrea at between ... By this interpretation, the latter genus would comprise both the Atlantic Crassostrea clade [type species Crassostrea virginica ...
P. S. Galtsoff, "The American oyster Crassostrea virginica (Gmelin)," Fishery Bulletin, vol. 64, pp. 1-48, 1964. View at Google ... T. Kawaguchi, "The organic matrices of the shell of the American oyster Crassostrea virginica Gmelin," Journal of Experimental ... Characteristics of the Aragonitic Layer in Adult Oyster Shells, Crassostrea gigas: Structural Study of Myostracum including the ... Crassostrea Gigas," Micron, vol. 38, no. 1, pp. 58-64, 2007. View at Publisher · View at Google Scholar · View at Scopus ...
Background The Pacific oyster Crassostrea gigas (Mollusca, Lophotrochozoa) is an alternative and irregular protandrous ... A comparison of the gametogenetic cycle between the Pacific oyster Crassostrea gigas and the suminoe oyster Crassostrea ... The oyster Crassostrea gigas is not an endangered or protected species.. Oysters were sampled 8 times between November 2008 and ... Fabioux C, Pouvreau S, Le Roux F, Huvet A (2004) The oyster vasa-like gene: a specific marker of the germline in Crassostrea ...
Perna viridis and Crassostrea madrasensis were screened for antibacterial activity. The extracts were obtained from whole body ...
... components of the Pacific oyster Crassostrea gigas, on glutamatergic neuron activity in the hippocampus.(Report) by The ... The Pacific oyster Crassostrea gigas (Thunberg, 1793) is a marine bivalve that originates from Japan, where it has been farmed ... Cloning and characterization of a gene coding for a novel metallothionein in the Pacific oyster Crassostrea gigas (CgMT2): a ... The effects of 3,5-dihydroxy-4-methoxybenzyl alcohol (DHMBA), and zinc--both components of the Pacific oyster Crassostrea gigas ...
Crassostrea gigas receptors are boxed in red. Hos, Homo sapiens; Sus, Sus scrofa; Gag, Gallus gallus; Cii, Ciona intestinalis; ... 2012). Characterization of GnRH-related peptides from the Pacific oyster Crassostrea gigas. Peptides 34, 303-310. doi:10.1016/j ... 2014). Neuropeptides encoded by the genomes of the Akoya pearl oyster Pinctata fucata and Pacific oyster Crassostrea gigas: a ... Two-year old adult oysters Crassostrea gigas (Thunberg 1793), purchased from a local farm (in Normandy, France), were used for ...
Crassostrea virginica consumes first-tier plankton from the water columns seston; thus analysis of chlorophyll-a content ... Crassostrea virginica) abundance has declined severely over the past century along the Atlantic and Gulf coasts of the United ... On the Gills and Palps of Ostrea edulis, Crassostrea virginica, and Crassostrea angulate. Journal of Morphology, 107, 163-191. ... Unique to Crassostrea is the feature of water removal from the right gill by the promyal chamber [17] . The primary motor of ...
Lhuitre creuse Crassostrea gigas est un organisme marin dintérêt économique majeur en tant que principale espèce dhuitre ... The pacific oyster Crassostrea gigas is a marine organism of economic interest as the main producing oysters worldwide. Oyster ... Lhuitre creuse Crassostrea gigas est un organisme marin dintérêt économique majeur en tant que principale espèce dhuitre ... Etude de la réponse environnementale et transgénérationnelle chez lhuitre creuse Crassostrea gigas : focus sur les mécanismes ...
... against the Crassostrea gigas database (NCBI) and Crassostrea virginica transcriptome (no genome available at the time) to ... 1977). Studies on the gill ciliation of the American oyster Crassostrea virginica (Gmelin). J. Morphol. 151, 439-449. doi: ... 2001). Selective feeding of the oyster Crassostrea gigas fed on a natural microphytobenthos assemblage. Estuaries 24, 126-134. ... 2016a). Modeling food choice in the two suspension-feeding bivalves, Crassostrea virginica and Mytilus edulis. Mar. Biol. 163, ...
... stress response and energy metabolism in two common estuarine bivalves-Crassostrea virginica (eastern oyster) and Mercenaria ... effects of CO₂ and trace metals on the proteasome activity and cellular stress response of marine bivalves Crassostrea ...
Lannig, G. and Sokolova, I. M. (2005): Cadmium affects thermal tolerance of eastern oyster, Crassostrea virginica , Annual Main ... Cadmium affects thermal tolerance of eastern oyster, Crassostrea virginica Lannig, Gisela ORCID: https://orcid.org/0000-0002- ...
The Portuguese oyster, Crassostrea angulata, was the most important species commercialized by the shellfish industry. However, ...
Development of the Crassostrea gigasgill was studied in order to better understand the feeding biology of early life stages, ... Galstoff PS (1964) The American oyster, Crassostrea virginica Gmelin. US Fish Wildl Ser Fish Bull 64:1-480Google Scholar ... In: Kennedy VS, Newell RIE, Eble AF (eds) The Eastern oyster Crassostrea virginica. Maryland Sea Grant, Maryland, pp 19-73 ... Development of the Crassostrea gigas gill was studied in order to better understand the feeding biology of early life stages, ...
FERTILIZATION SUCCESS IN THE EASTERN OYSTER Crassostrea virginica and HYDRODYNAMIC INFLUENCES OF OYSTER SHELL ON LARVAL ... Natural populations of the eastern oyster, Crassostrea virginica typically form dense, vertically-oriented shell assemblages ...
  • Ostrea maxima) †Crassostrea wyomingensis The genome of Crassostrea gigas (now Magallana gigas) has been recently sequenced revealing an extensive set of genes that enable it to cope with environmental stresses. (wikipedia.org)
  • Juvenile Crassostrea gigas oysters experience reoccurring mass mortalities events from Ostreid herpes virus 1 with no existing therapeutic treatment. (nature.com)
  • In this work, artificial interspecific hybridization was carried out and three crosses were successfully produced, namely Crassostrea gigas (GG), C. sikamea (SS) and C. sikamea ♀ × C. gigas ♂ (SG), although C. gigas ♀ × C. sikamea ♂ formed nonviable hybrid offspring. (springer.com)
  • Allen SK, Gaffney PM (1993) Genetic confirmation of hybridization between Crassostrea gigas (Thunberg) and Crassostrea rivularis (Gould). (springer.com)
  • Allen SK, Gaffney PM, Scarpa J, Bushek D (1993) Inviable hybrids of Crassostrea virginica (Gmelin) with C. rivularis (Gould) and C. gigas (Thunberg). (springer.com)
  • Banks MA, McGoldrick DJ, Borgeson W, Hedgecock D (1994) Gametic incompatibility and genetic divergence of Pacific and Kumamoto oysters, Crassostrea gigas and C. sikamea . (springer.com)
  • Dégremont L, Bédier E, Boudry P (2010) Summer mortality of hatchery-produced Pacific oyster spat ( Crassostrea gigas ). (springer.com)
  • Our previous studies showed that oyster β-thymosin originated from the mantle of the Pacific oyster, Crassostrea gigas and had antimicrobial activity. (mdpi.com)
  • is designated as an "accepted name," whereas a search for Crassostrea gigas results in the message "no matching results found. (bioone.org)
  • S. W. Lee and C. S. Choi, "The correlation between organic matrices and biominerals (myostracal prism and folia) of the adult oyster shell, Crassostrea Gigas ," Micron , vol. 38, no. 1, pp. 58-64, 2007. (hindawi.com)
  • The Pacific oyster Crassostrea gigas (Mollusca, Lophotrochozoa) is an alternative and irregular protandrous hermaphrodite: most individuals mature first as males and then change sex several times. (plos.org)
  • Preventive effect of 3,5-dihydroxy-4-methoxybenzyl alcohol (DHMBA) and zinc, components of the Pacific oyster Crassostrea gigas, on glutamatergic neuron activity in the hippocampus. (thefreelibrary.com)
  • The effects of 3,5-dihydroxy-4-methoxybenzyl alcohol (DHMBA), and zinc--both components of the Pacific oyster Crassostrea gigas--were examined by glutamatergic neuron activity in rats in an in vivo microdialysis experiment and an in vitro brain slice experiment. (thefreelibrary.com)
  • The Pacific oyster Crassostrea gigas (Thunberg, 1793) is a marine bivalve that originates from Japan, where it has been farmed since the 1600s. (thefreelibrary.com)
  • Using the Pacific oyster ( Crassostrea gigas ) transcriptomic database GigaTON, we characterized seven G-protein-coupled receptors (GPCRs) named Cragi-CTR1-7 and phylogenetically related to chordate CT receptors (CTRs) and to protostome DH31 receptors. (biologists.org)
  • The pacific oyster Crassostrea gigas is a marine organism of economic interest as the main producing oysters worldwide. (archives-ouvertes.fr)
  • L'huitre creuse Crassostrea gigas est un organisme marin d'intérêt économique majeur en tant que principale espèce d'huitre produite dans le monde. (archives-ouvertes.fr)
  • Development of the Crassostrea gigas gill was studied in order to better understand the feeding biology of early life stages, identify potentially critical developmental stages which may influence rearing success or recruitment to wild populations, and shed light on the evolution of the basic bivalve gill types. (springer.com)
  • In the present study, an interferon regulation factor 1 was identified from oyster Crassostrea gigas (designated CgIRF-1), and its immune function was characterized to understand the regulatory mechanism of interferon system against viral infection in invertebrates. (ovid.com)
  • The mollusc Pacific oyster Crassostrea gigas exhibits complex modes of sexual reproduction that consists of protandric dioecy, sex change, and occasional hermaphroditism. (g3journal.org)
  • Due to the importance of bivalve mollusks in biomonitoring programs and the scarce information on the biotransformation system in these organisms, the aim of this study was to investigate the effect of PYR and FLU at the transcriptional level and the enzymatic activities of some biotransformation systems in the Pacific oyster Crassostrea gigas, and to evaluate the histological effects in their soft tissues. (physiciansweekly.com)
  • Molecular characterization of a cDNA encoding putative vitellogenin from the Pacific oyster Crassostrea gigas. (semanticscholar.org)
  • Proteomic identification of quality factors for oocytes in the Pacific oyster Crassostrea gigas. (semanticscholar.org)
  • Identification of proteins with potential osteogenic activity present in the water-soluble matrix proteins from Crassostrea gigas nacre using a proteomic approach. (ualg.pt)
  • Four proteins (three gigasin-2 isoforms and a cystatin A2) were for the first time identified in WSM of Crassostrea gigas nacre using 2DE and LC-MS/MS for protein identification. (ualg.pt)
  • In this study, Crassostrea gigas, a species well adapted to the highly variable intertidal environment, was exposed to the chronic environmental challenges of temperature (19 and 24°C) and pH (ambient seawater and a reduction of 0.4 pH units) in an extended 3-month laboratory-based study. (bas.ac.uk)
  • Incorporation of different fatty acids, supplied as emulsions or liposomes, in the polar and neutral lipids of Crassostrea gigas spat. (ugent.be)
  • Caers M, Coutteau P, Sorgeloos P. Incorporation of different fatty acids, supplied as emulsions or liposomes, in the polar and neutral lipids of Crassostrea gigas spat. (ugent.be)
  • Oyster vasa-like gene as a marker of the germline cell development in Crassostrea gigas. (semanticscholar.org)
  • The oyster vasa-like gene was previously demonstrated to be specifically expressed in germline cells of adult oysters Crassostrea gigas. (semanticscholar.org)
  • Identification and expression of a factor of the DM family in the oyster Crassostrea gigas. (semanticscholar.org)
  • Researchers assess whether Zostera marina and Crassostrea gigas are potential partners in a changing ocean. (washington.edu)
  • The arrangement of protein-coding genes in C. hongkongensis is identical to that of Crassostrea gigas and Crassostrea virginica , but higher amino acid sequence identities are shared between C. hongkongensis and C. gigas than between other pairs. (biomedcentral.com)
  • There exists significant codon bias, favoring codons ending in A or T and against those ending with C. Pair analysis of genome rearrangements showed that the rearrangement distance is great between C. gigas - C. hongkongensis and C. virginica , indicating a high degree of rearrangements within Crassostrea . (biomedcentral.com)
  • A significant production decrease has been witnessed for the Pacific oysters, Crassostrea gigas farmed in the western coastal waters of Korea, presumably by the loss of physiological viability. (koreascience.or.kr)
  • The current study evaluated the microalgae replacement by dry macroalgae ( Ulva rigida ) in the reproductive success and biochemical composition of the Pacific oyster ( Crassostrea gigas ) during broodstock conditioning. (biologists.org)
  • Although metaldehyde has been detected in surface waters, its effects on marine bivalves including the Pacific oyster, Crassostrea gigas, have never been studied. (pasteur.fr)
  • Bivalves are NO Different: Nitric Oxide as Negative Regulator of Metamorphosis in the Pacific Oyster, Crassostrea Gigas. (researchsquare.com)
  • Results In this paper, we investigate the effects of NO pathway inhibitors and NO donors on metamorphosis induction in larvae of the Pacific oyster, Crassostrea gigas , demonstrating that the nitric oxides synthase (NOS) inhibitors s-methylisothiourea hemisulfate salt (SMIS), aminoguanidine hemisulfate salt (AGH) and 7-nitroindazole (7-NI) induce metamorphosis in a concentration-dependent manner ranging from 75%, 76-83% respectively. (researchsquare.com)
  • AC 538 (Psm)] and two known species [Pavlova pinguis (Ppi), Rebecca salina (ex Pavlova salina, Rsa)] were characterized (productivity, size, dry weight, ash, gross composition, fatty acids, sterols) and their nutritional value in bispecific diets were evaluated both on Crassostrea gigas and Pecten maximus larvae. (ifremer.fr)
  • We're working on a project with Washington Department of Natural Resources' (DNR) Micah Horwith to identify potential proteomic biomarkers in geoduck ( Panopea generosa ) and Pacific oyster ( Crassostrea gigas ). (onsnetwork.org)
  • To provide more comprehensive morphogenetic data on bivalve molluscs and relationships among molluscan clades, we investigated neurogenesis in the Pacific oyster, Crassostrea gigas , from the appearance of the first sensory cells to the formation of the larval ganglionic nervous system by co-immunocytochemistry of the neuronal markers FMRFamide or 5-HT and vesicular acetylcholine transporter (VAChT). (biomedcentral.com)
  • We described the development of the nervous system during the larval development in Crassostrea gigas . (biomedcentral.com)
  • In the present study, the hematopoiesis and immune activities in gill of Pacific oyster Crassostrea gigas were investigated. (usda.gov)
  • 0.001) are to Crassostrea gigas . (onsnetwork.org)
  • In the present study, 30 Pacific oyster, Crassostrea gigas, adults have been analyzed using three different techniques: PCR, ISH and immunochemistry, in order to detect herpesviruses in asymptomatic individuals. (ifremer.fr)
  • The activity of P-gp was regulated in Crassostrea gigas, which was previously exposed to Cd by using rifampicin (inducer) and verapamil (inhibitor), respectively. (usda.gov)
  • Comparing with Crassostrea gigas depurated in natural seawater, Cd content increased significantly from 14.28 mg/kg dw to 17.49 mg/kg dw accompanied by a changed metallothionein level from 9.84 μg/g fw to 10.67 μg/g fw after 25 μg/L verapamil treatment, while Cd content after 25 μg/L rifampicin treatment reduced to 12.21 mg/kg dw. (usda.gov)
  • Moreover, after treatment with rifampicin and verapamil, beneficial metal elements, fats, and proteins were maintained, and the tissue-dependent difference was found in the variation of antioxidant defenses and oxidative damage in Crassostrea gigas. (usda.gov)
  • R scripts written for differential analysis and regression analysis to investigate the molecular basis of Paralytic Shellfish Toxins load in the oyster Crassostrea gigas exposed to the toxigenic alga Alexandrium minutum . (seanoe.org)
  • The aim of this study was to evaluate the effects of a biomaterial based on Crassostrea gigas shell in the application of periodontal defects in rats.MEV analysis of the particles showed a variety of sizes and microporous surface, while EDXRF analysis demonstrated calcium oxide as the main component. (bvsalud.org)
  • Genome-wide profiling of DNA methylation and gene expression in Crassostrea gigas male gametes. (wordpress.com)
  • In order to provide a better understanding of DNA methylation in the Pacific oyster (Crassostrea gigas), we characterized the genome-wide DNA methylation profile in male gamete cells using whole-genome bisulfite sequencing. (wordpress.com)
  • ABSTRACT: The ostreid herpesvirus OsHV-1 has the potential to devastate Pacific oyster Crassostrea gigas culture in Australia as it has done in many other countries, highlighting the need for a better understanding of disease expression and transmission. (int-res.com)
  • Crassostrea gigas (Pacific Oyster) is native to the Indo-West Pacific from Pakistan to Japan and Korea, and the Phillipines, Borneo, and Sumatra (Carriker and Gaffney 1996). (si.edu)
  • En este trabajo se logró amplificar todos los dominios de Dscam de Crassostrea gigas, C. corteziensis y C. sikamea. (cibnor.mx)
  • Dscam se expresa en branquias y manto de C. gigas y C. corteziensis sanos. (cibnor.mx)
  • La localización de Dscam en C. gigas infectados con herpes virus tipo 1 (OsHV-1) y C. corteziensis con Perkinsus marinus no se limita a branquias y manto también se observó en intestino, glándula digestiva y gónada. (cibnor.mx)
  • Los resultados de qPCR en C. gigas y C. corteziensis sanos e infectados sugieren que la expresión de Dscam podría estar relacionada con el patógeno al que fueron expuestos. (cibnor.mx)
  • Para evaluar la participación de Dscam durante la exposición a un patógeno, se midieron los niveles de expresión de Dscam en branquias y manto de C. gigas adultos expuestos a E. coli. (cibnor.mx)
  • In this work, the Dscam domains from Crassostrea gigas, C. corteziensis and C. sikamea were amplified. (cibnor.mx)
  • In this study, we use a half-dial breeding design to estimate heritability (h2) for survival to Vibrio harveyi infection and larval shell length to aragonite undersaturated and normal conditions in laboratory-reared Crassostrea gigas. (news-oceanacidification-icc.org)
  • Eventually the bays became polluted, so west coast governments and entrepreneurs turned to the Pacific oyster Crassostrea gigas as the basis for a thriving aquaculture industry after 1929. (thefishsite.com)
  • Based on a comparison of 5 countries in 2007, France ranked the highest in Aquaculture production in 1984-2007 - Seawater - Marine areas - Pacific cupped oyster - Crassostrea gigas (live weight) with 110,800 tonnes followed by Ireland and Spain. (helgilibrary.com)
  • The Pacific oyster Crassostrea gigas, a widely cultivated marine bivalve mollusc, is becoming a genetically and genomically enabled model for highly fecund marine metazoans with complex life-histories. (homolog.us)
  • Genes that were discovered in the Crassostrea gigas transcriptome using bioinformatics have a superscript "Cg" in orange. (biomedcentral.com)
  • Effects of subchronic exposure to glyphosate in juvenile oysters (Crassostrea gigas): From molecular to individual levels. (mnhn.fr)
  • The aim of this study was to investigate the effects of subchronic exposure to glyphosate in juvenile oysters, Crassostrea gigas . (mnhn.fr)
  • Since 2008, massive mortality events of Pacific oysters ( Crassostrea gigas ) have been reported worldwide and these disease events are often associated with Ostreid herpesvirus type 1 (OsHV-1). (biomedcentral.com)
  • The Pacific oyster, Crassostrea gigas forms the basis of an important global aquaculture industry with one of the largest annual productions of any marine animals. (biomedcentral.com)
  • In this study, the suppression subtractive hybridisation technique was used to discover the main physiological function affected by a cocktail of three pesticides (lindane, metolachlor and carbofuran) in the Pacific oyster Crassostrea gigas. (univ-brest.fr)
  • Structural and functional characterizations of an Activin type II receptor orthologue from the pacific oyster Crassostrea gigas. (mnhn.fr)
  • Recent findings in the mollusc Crassostrea gigas demonstrate the occurrence of a diversity of TGF-beta signalling components including various ligands, three type I receptors but only a single type II receptor. (mnhn.fr)
  • Første funn av østers herpesvirus (OsHV-µvar) i forbindelse med sommerdødelighet av stillehavsøsters, Crassostrea gigas, i Norge. (imr.no)
  • Crassostrea is a genus of true oysters (family Ostreidae) containing some of the most important oysters used for food. (wikipedia.org)
  • The analysis showed significant levels of all PGMs in blackchin tilapia ( Sarotherodon melanotheron Cichlidae), brown goby ( Chonophorus lateristriga Gobiidae), shrimp ( Macrobrachium vollenhovenii Palaemonidae), and mangrove oysters ( Crassostrea tulipa Ostreidae) in the lagoons and river Pra estuary. (hindawi.com)
  • The World Register of Marine Species (WoRMS) currently registers all Pacific cupped oysters that were formerly members of the genus Crassostrea in a new genus. (bioone.org)
  • It has previously been determined that Eastern oysters ( Crassostrea virginica ) can remove sporulated T. gondii oocysts from seawater and that oocysts retain their infectivity for mice. (allenpress.com)
  • Two case reports of herpes-like viruses concerned adult oysters, Crassostrea virginica in USA and Ostrea angasi in Australia. (ifremer.fr)
  • Proteomic responses induced by metal pollutions in oysters Crassostrea sikamea [J]. Journal of Oceanology and Limnology , 2019, 37(2): 685-693. (jol343.com)
  • In order to unravel the biological effects caused by metal pollutions, proteomic responses were investigated by two-dimensional electrophoresis-based proteomics in oysters Crassostrea sikamea from metal pollution sites, Jinshan (JS) and Baijiao (BJ), and a relatively clean site, Jiuzhen (JZ), along the Jiulongjiang estuary. (jol343.com)
  • Significantly, two species of oysters, Crassostrea hongkongensis and Crassostrea sikamea , have been found to accumulate high accumulation of metals, which have posed a great risk on human health. (jol343.com)
  • Like all oysters, Crassostrea virginica is a bivalve mollusk with a hard calcium carbonaceous shell that protects it from predation. (wikipedia.org)
  • Tracking Triploid Mortalities Of Eastern Oysters Crassostrea virginica" by Eric Guevelou, Ryan Carnegie et al. (wm.edu)
  • Since 2012, aquacultured eastern oysters Crassostrea virginica have been reported by oyster farmers to display mortality approaching 30%, and in some cases 85%, in areas of the lower Chesapeake Bay, VA. Based on accounts from industry, this mortality has typically affected 1-y-old oysters between May and early July, and has tended to occur in triploid oysters, which represent the vast bulk of production in the area. (wm.edu)
  • But the introduction of Pacific Oysters was considered as a possible means of replacing or supplementing native stocks of the Eastern Oyster ( Crassostrea virginica ), which has been devastated by disease and overharvest. (si.edu)
  • In this context, the main objective of this study was to compare the activity of cysteinoproteases with biomarkers consecrated through exposure of oysters Crassostrea sp. (unifesp.br)
  • Effects of desiccation practices and ploidy in cultured oysters, Crassostrea virginica, on Vibrio spp. (mendeley.com)
  • Off-bottom cultivation of oysters, Crassostrea virginica, is increasing in the Gulf of Mexico. (mendeley.com)
  • Among the commonly cultured species in hatcheries exhibiting this form of sexual development are clams of the genus Tapes , Mercenaria , Mya and Spisula , oysters of the genus Crassostrea and the many types of mussel including Mytilus sp. (fao.org)
  • Effect of salinity on the hemocyte profile and phagocytosis in the Indian edible oyster, Crassostrea madrasensis (Preston) Groups of Indian edible oysters (Crassostrea madrasensis) of average size 6.6 + 1.5 cm x 4.2 + 0.2 cm, were maintained at different salinities of 6, 12,25 and 35 ppt for a period of 1 month. (org.in)
  • ABSTRACT: The objective of this project was to document the status of oysters, Crassostrea virginica, from non-reef habitats throughout Tampa Bay, Florida, and assess the ecosystem contributions of those populations relative to reef-dwelling oysters. (usf.edu)
  • Baker SM, Mann R (1994b) Feeding ability during settlement and metamorphosis in the oyster Crassostrea virginica (Gmelin, 1791) and the effects of hypoxia on post-settlement ingestion rates. (springer.com)
  • Cherkasov, A.S., Grewal, S., and Sokolova, I.M. (2007) Combined effects of temperature and cadmium exposure on haemocyte apoptosis and cadmium accumulation in the eastern oyster Crassostrea virginica (Gmelin). (koreascience.or.kr)
  • The eastern oyster Crassostrea virginica (Gmelin, 1791) is found along the coast of the Gulf of Mexico, where water temperatures can vary greatly. (scielo.org.mx)
  • First study in cryopreserved Crassostrea angulata sperm. (ualg.pt)
  • The Portuguese oyster, Crassostrea angulata, was the most important species commercialized by the shellfish industry. (ualg.pt)
  • Vitellogenin of Fujian oyster, Crassostrea angulata: Synthesized in the ovary and controlled by estradiol-17β. (semanticscholar.org)
  • The metallothionein levels and metal concentrations in whole body, digestive gland and gills of Crassostrea angulata were analyzed in field samples collected from the River Guadalquivir estuary over several years following a mining waste spill upstream. (csic.es)
  • Crassostrea tulipa, the West African mangrove oyster, is a true oyster in the family Ostreidae. (wikipedia.org)
  • Beninger PG, Dufour SC (1996) Mucocyte distribution and relationship to particle transport on the pseudolamellibranch gill of Crassostrea virginica (Bivalvia: Ostreidae). (springer.com)
  • Temperature effects on the depuration of Vibrio parahaemolyticus and Vibrio vulnificus from the American oyster (Crassostrea virginica). (oregonstate.edu)
  • This study investigated temperature effects on depuration for reducing Vibrio parahaemolyticus and Vibrio vulnificus in American oyster (Crassostrea virginica). (oregonstate.edu)
  • Purification and Characterization of Vitellin from the Egg of the Suminoe Oyster Crassostrea ariakensis and Cross-Reactivity of Anti-vitellin Antibody with Other Marine Invertebrate Egg Proteins. (semanticscholar.org)
  • 1991). By 1998, research and political interest had shifted to Crassostrea ariakensis , which showed better growth and survival under East Coast conditions (National Research Council 2003). (si.edu)
  • Interactive effects of CO₂ and trace metals on the proteasome activity and cellular stress response of marine bivalves Crassostrea virginica and Mercenaria mercenaria. (sigmaaldrich.com)
  • Foley, D.A., and Cheng, T.C. (1975) A quantitative study of phagocytosis by haemolymph cells of the pelecypods Crassostrea virginica and Mercenaria mercenaria. (koreascience.or.kr)
  • Camara MD, Davis JP, Sekino M, Hedgecock D, Li G, Langdon CJ, Evans S (2008) The Kumamoto oyster Crassostrea sikamea is neither rare nor threatened by hybridization in the Northern Ariake Sea, Japan. (springer.com)
  • Hamaguchi M, Shimabukuro H, Kawane M, Hamaguchi T (2013) A new record of the Kumamoto oyster Crassostrea sikamea in the Seto Inland Sea, Japan. (springer.com)
  • Natural populations of the eastern oyster, Crassostrea virginica typically form dense, vertically-oriented shell assemblages comprised of rough, irregular surfaces which likely influence local water flow, affecting the transit of particles, including gametes and larvae, over them. (umd.edu)
  • We studied the interactive effects of CO2 and two common metal pollutants, copper (Cu) and cadmium (Cd), on metal accumulation, intracellular ATP/ubiquitin-dependent protein degradation, stress response and energy metabolism in two common estuarine bivalves-Crassostrea virginica (eastern oyster) and Mercenaria mercenaria (hard shell clam). (sigmaaldrich.com)
  • We present here an analysis of features of its gene content and genome organization in comparison with two other Crassostrea species to assess the variation within bivalves and among main groups of mollusks. (biomedcentral.com)
  • A striking finding of this study is that a DNA segment containing four tRNA genes ( trnk1, trnC, trnQ1 and trnN ) and two duplicated or split rRNA gene ( rrnL5' and rrnS ) are absent from the genome, when compared with that of two other extant Crassostrea species, which is very likely a consequence of loss of a single genomic region present in ancestor of C. hongkongensis . (biomedcentral.com)
  • The mt-genome of C. hongkongensis shares some similarity with, and interesting differences to, other Crassostrea species and bivalves. (biomedcentral.com)
  • The absence of trnC and trnN genes and duplicated or split rRNA genes from the C. hongkongensis genome is a completely novel feature not previously reported in Crassostrea species. (biomedcentral.com)
  • The eastern oyster ( Crassostrea virginica )-also called the Atlantic oyster , American oyster , or East Coast oyster -is a species of true oyster native to eastern North and South America. (wikipedia.org)
  • and V. vulnificus populations present within the eastern oyster (Crassostrea virginica), and the effects of cold shock (35°C to 4°C) on the complete V. vulnificus transcriptome. (auburn.edu)
  • In the present study we describe for the first time a parasite of the genus Perkinsus infecting the mangrove oyster Crassostrea rhizophorae from the Brazilian coast. (int-res.com)
  • Crassostrea rhizophorae · Mangrove oyster · Perkinsus sp. (int-res.com)
  • This study investigated the infection of Perkinsus beihaiensis (Perkinsozoa) in the oyster Crassostrea rhizophorae, both from a long-line cultivation system and from a nearby intertidal zone of mangrove, both in the state of Bahia, northeastern Brazil . (bvsalud.org)
  • Foi investigada a infecção de Perkinsus beihaiensis (Perkinsozoa) na ostra Crassostrea rhizophorae em um sistema de cultivo do tipo espinhel e em um estoque natural de ostras no manguezal adjacente ambos localizados no estado da Bahia, Nordeste do Brasil . (bvsalud.org)
  • The presence of polydorids shell-borer and the epifaunal polychaetes on Crassostrea cf. brasiliana were studied in five estuaries in Northeastern Brazil. (sumarios.org)
  • In the southeastern United States, the Eastern oyster, Crassostrea virginica , is infected by the lethal protozoan parasite, Perkinsus marinus . (peerj.com)
  • In the present study water, ethanol, methanol, acetone, hexane and butanol extracts of two Bivalves, Perna viridis and Crassostrea madrasensis were screened for antibacterial activity. (scialert.net)
  • The mt-genome and new feature presented here reveal and underline the high level variation of gene order and gene content in Crassostrea and bivalves, inspiring more research to gain understanding to mechanisms underlying gene and genome evolution in bivalves and mollusks. (biomedcentral.com)
  • Among the economically important bivalves, the slipper oyster (Crassostrea iredalei) and green mussel (Perna viridis) are predominantly being farmed in the Philippines. (seafdec.org)
  • The determination of complete mt-genome of C. hongkongensis has yielded useful insight into features of gene order, variation, and evolution of Crassostrea and bivalve mt-genomes. (biomedcentral.com)
  • Lannig, G. and Sokolova, I. M. (2005): Cadmium affects thermal tolerance of eastern oyster, Crassostrea virginica , Annual Main Meeting of Society for Experimental Biology (SEB), C2 Mechanisms of thermal limitation and adaptation: from molecule to ecosystem, 11. (awi.de)
  • Eastern oyster ( Crassostrea virginica ) abundance has declined severely over the past century along the Atlantic and Gulf coasts of the United States. (scirp.org)
  • Historically, the eastern oyster (Crassostrea virginica) was a bountiful fisheries landing in the Greater New York region of the Atlantic coastline. (scirp.org)
  • The effectiveness of two stimuli (thermal and salinity shock) in inducing spawning in the eastern oyster Crassostrea virginica was tested under laboratory conditions. (scielo.org.mx)
  • Perkinus marinus causes a devastating disease, known as Dermo, in the Eastern oyster Crassostrea virginica. (mblwhoilibrary.org)
  • Population biology, ecology, and ecosystem contributions of the eastern oyster (crassostrea virginica) from natural and artificial habitats in tampa bay, florida h [electronic resource] / by Michael Drexler. (usf.edu)
  • Here we show the responses of four calcium-binding protein genes, caltractin ( cetn ), calmodulin ( calm ), calreticulin ( calr ), and calnexin ( canx ), to CO2-derived OA using a Crassostrea virginica mantle cell (CvMC) culture model and a larval C. virginica model. (news-oceanacidification-icc.org)
  • The nervous system of the adult oyster Crassostrea virginica consists of central and peripheral branches. (biomedcentral.com)
  • We determined, in the current study, the complete mitochondrial DNA sequence of Crassostrea hongkongensis . (biomedcentral.com)
  • Baker SM, Mann R (1994a) Description of metamorphic phases in the oyster Crassostrea virginica and effects of hypoxia on metamorphosis. (springer.com)
  • In the framework of a program focusing on marine resource protection and management in the Caribbean, the objective of this work was to characterize As bioaccumulation in the common edible oyster Crassostrea virginica. (environmentalindicatorsjournal.net)
  • NMDC er en nasjonal infrastruktur for marine data som skal levere sømløs tilgang til dokumenterte marine d. (imr.no)