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 ...
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 ...
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.
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 ...
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
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 ...
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 ...
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 ...
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,...
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
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
How many kind of food can you name comes with its own side dish? Well, the eastern oyster (Crassostrea virginica) should be on that list. This week. weve already seen how a trematode infection can improve the taste of oysters, but it seems that oyster also comes with another gastronomic treat in the form of the pea crab Zaops ostreum. Pea crabs (family Pinnotheridae) are small soft bodied crabs which live inside a variety of marine invertebrates, with most species living in bivalves. Zaops ostreum infect the oyster as a tiny first stage larvae, and grow to maturity within the bivalves mantle cavity, feeding upon food-laden mucus strings produced by its hosts filtering action. It is a true parasite in that it causes harm to its host. Not only does it steal food from the oyster, it also forms an obstruction within the body cavity and erode the gill tissue. From a culinary perspective, there are many serving suggestions available for pea crabs - they can be served raw, deep fried, or sautéed, ...
There are no implications for human health. The virus only affects Pacific oysters.. OsHV-1 µvar is a virulent viral disease affecting the Pacific oyster, also known as the rock or cupped oyster. This is the only species of shellfish that is currently known to be susceptible to this virus.. Existing statutory controls for OsHV-1 µVar in the area have been reviewed and the pre-existing control area has been expanded.. Consequently, Confirmed Designation Notice CD07/2015 has been withdrawn and replaced by one new designation notice CD14/2015, which now controls the movements of live Pacific oysters into and out of the area.. You must apply to the Fish Health Inspectorate if you want to move any live Pacific oysters into or out of the designated area.. In addition England and Wales continues to have OsHV-1µVar control areas in Essex and Poole Harbour, Dorset.. ...
The Eastern Oyster, Crassostrea virginica, is a critical connection between pelagic and benthic environments for coastal microeukaryotic organisms. Through selective filter feeding on planktonic microeukaryotes, oysters contribute directly to the benthic food source for other organisms by depositing microeukaryotes in feces or pseudofeces to sediments. This role in nutrient cycling provides valuable ecosystem services in promoting biodiversity and clean water, and mitigating eutrophication in coastal waters. However, it is not known whether oysters have a eukaryotic microbiome, or
Reasonable progress has been made toward attaining the objectives of this project (No. 3-7-R). Considerable additional and new knowledge of the physical structure and dynamics of a theoretically horizontally-stratified estuary and the movement of the larvae and setting (spatfall) of juvenile Crassostrea virginica has been developed. Sedimentary processes, flushing times and the spatial and temporal distribution of the biological entities have also been investigated. Of especial interest have been the design, construction and verification of an hydraulic model of the system and the use of this scientific device to simulate movement of larvae by dye and to make 11time of passage studiesH, as described below. Later utilization will involve similar studies.
Bower, S.M. and G.R. Meyer. 1993. Stegotricha enterikos gen. n., sp. n. (Class Phyllopharyngea, Order Rhynchodida), a parasitic ciliate in the digestive gland of Pacific oysters (Crassostrea gigas) and its distribution in British Columbia. Canadian Journal of Zoology 71: 2005-2017.. Cheng, T.C. 1967. Marine molluscs as hosts for symbioses with a review of known parasites of commercially important species. Advances in Marine Biology 5: 1-424.. Couch, J.A. 1985. Prospective study of infectious and noninfectious disease in oysters and fishes in three Gulf of Mexico estuaries. Diseases of Aquatic Organisms 1: 59-82.. Fenchel, T. 1965. Ciliates from Scandinavian Molluscs. Ophelia 2(1): 71-174.. Otto, S. V., Harshbarger, J. C. and Chang, S. C. 1979. Status of selected unicellular eucaryote pathogens, and prevalence and histopathology of inclusions containing obligate procaryote parasites, in commercial bivalve mollusks from Maryland estuaries. Haliotis 8 (1977): 285-295.. Pauley, G.B., Chew, K.K. and ...
One very controversial suggestion thats been debated for half a century is to introduce a non-native oyster to the bay and see if it can do better than Crassostrea virginica. "Researchers, resource managers, conservationists, and those in the industry are considering whether the risks of such an introduction would outweigh the potential benefits." Clearly, everyones leery of the idea, especially since it appears that the MSX disease was introduced into the Chesapeake as a hitchhiker on a non-native oyster. An editorial in the Fredericksburg (VA) Free Lance-Star described the scale and complexity of the regions problem: The primary lesson, one that has been hammered home as the Chesapeake Bay blue crab numbers have dwindled, is that in order to save the bays creatures, you first have to save the bay -or at least be able to show real signs of progress toward recovery. But oysters are also at the center of the bay recovery conundrum: They have always been the estuarys best natural water ...
The tolerance of Crassostrea virginica larvae to anoxia increases with developmental stage and body size. Median mortality times range from 11 h for prodissoconch larvae of 82 micro m (shell length) to 51 h for pediveliger larvae of 3 12 micro m, and 150 h for juvenile oysters. Simultaneous calorimetry and respirometry showed that in response to declining oxygen tension (P02), the rates of heat dissipation and oxygen uptake by oyster larvae are maintained independent of PO2 down to low Pc values (2 kPa for prodissoconch larvae and 8 kPa for pediveliger and juveniles). Therefore, total energy metabolism is sustained mainly by aerobic metabolism down to 2 and 4 kPa for early larval stages and juveniles, respectively. Prodissoconch larvae maintain relatively high rates of heat dissipation under anoxic conditions (34% of normoxic rate), whereas pediveliger and juveniles lower their anoxic rates of heat dissipation to 3% of the normoxic rate. The ability to reduce rates of heat dissipation and thus conserve
VIETNAM - The Red River Delta province of Nam Dinh has licensed a Taiwan-invested project on raising giant Pacific Oyster scientically named Crassostrea gigas, with an initial investment of US$120,000.,/b, ,br,,br, ,p,The project, covering 10 hectares of water, is designed to produce 5 million fries and 833,000 kg of oysters for harvest a year, once it begins operations in 2008. ,br /, ,br /, The potential farm is also expected to produce high-quality oysters for export to Taiwan, the US and Japan, in addition to providing raw materials for sea-food processing factories. ,/p, ,p,,em,Source: Vietnam Economy,/em,,/p,. ...
Article for grades 6 through 12 This young naturalist looked to oyster restoration projects, which have gained popularity in recent years as a means of improving water quality, for her investigation.
The measurements of valve activity in a population of bivalves under natural environmental conditions (16 oysters in the Bay of Arcachon, France) are used
Dual analyses of the interactions between Ostreid herpesvirus 1 (OsHV-1) and the bivalve Crassostrea gigas during infection can unveil events critical to the onset and progression of this viral disease and can provide novel ...
Sanmartín MLópez, Power DM, de la Herrán R, Navas JI, Batista FM. Evidence of vertical transmission of ostreid herpesvirus 1 in the Portuguese oyster Crassostrea angulata. J Invertebr Pathol. 2016;140:39-41. doi:10.1016/j.jip.2016.08.012 ...
General Information: Vibrio splendidus LGP32 (CIP 107715) caused significant mortalities in oysters, Crassostrea gigas, during the summer of 2001. This genus is abundant in marine or freshwater environments such as estuaries, brackish ponds, or coastal areas; regions that provide an important reservoir for the organism in between outbreaks of the disease. Vibrio can affect shellfish, finfish, and other marine animals and a number of species are pathogenic for humans. This microbe inflicts disease and death in many marine species causing massive damage to industries devoted to their production, including fish, oysters, mussels, and scallops. ...
G. 2004, Overview and comparison of lipid-containing semipermeable membrane devices (SPMDs) and oysters (Crassostrea gigas) for assessing chemical exposure. Environ. Toxicol. Chem. 23: 1617-1628. D. S. 1992, Viability of glochida of two species of Anodonta exposed to low pH and selected metals. Can. J. Zool. 70: 2348-2354. Hwang, S-T. and Kammermeyer, K. 1984, Membranes in Separations. Krieger Publishing: Malabar, FL. P. 1995, Passive sampling devices for rapid determination of soil contaminant distributions. Sci. Technol. 35: 1425-1431. N. 1992, Rapid characterization of pesticide residues in contaminated soils by passive sampling devices. Environ. Toxicol. Chem. 11: 765-770. Zabik, M. 1988, Michigan State University, East Lansing, MI. Personal communication. 1. SPMD DESCRIPTION AND RATIONALE From the discussions thus far, the reader can infer that SPMDs are designed to mimic the passive diffusional and partitioning steps of bioconcentration while providing semi-quantitative to quantitative ...
A novel homologue of IκB was cloned from a hemocyte cDNA of Crassostrea gigas (designed as CgIκB2). The complete cDNA of CgIκB2 includes an open reading frame (ORF) of 1032 bp, and 3′ and 5′untranslated regions (UTRs) of 141 bp and 279 bp, respectively. The ORF encodes a putative protein of 343 amino acids with a calculated molecular weight of approximately 37.8 kDa. Alignment analysis reveals th ...
ANNAPOLIS | Maryland Gov. Martin OMalley has outlined a three-step plan to revive the Chesapeake Bays native oyster population, which has languished for years at just 1 percent of historic numbers.
The goals of the Host-Pathogen-Environment (Interaction Hôtes Pathogènes Environnements - IHPE) research unit aims to describe the mechanisms that govern the interactions between marine invertebrates (mainly the Pacific oyster, Crassostreagigas), their pathogens and the environment, and also to characterise the physiological and adaptive responses of oysters and their pathogens to environmental pressures.
Complete information for SPATS2 gene (Protein Coding), Spermatogenesis Associated Serine Rich 2, including: function, proteins, disorders, pathways, orthologs, and expression. GeneCards - The Human Gene Compendium
ahojte, to pocasi je desny, nebo je to tim tehu, ja nevim. vcera odpo se me nic nechtelo, ani jsem neumyla nadobi, proste jsem nic nedelala. dneska dopo jsme anicku daly tchanovcum a jely s manzelem po kuchynskych deskach. holky des, nic jsme nevybraly, jeste nam zbyvaji kuchynsky studia jako oresi,...pak jsme jely na obed k tchanovcum a domu. anicka spat nechtela, tak jsem ji pustila dobu ledovou a ja aspon usla na 20min. tedka uz je zrala na spani, tak ji dam. manza je cely odpo na byte. zitra tam bude zase celej den. uz bych chtela byt prestehovana, abysme spolu travily vic casu. nejak me to nebavi. a taky si uvedomuju, ze jsu nejaka protivna, no jo asi hormony, jsu porad unavena a pak vecer takova protivnejsi, ale co nadelam ...
... - 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