A large family of mollusks in the class BIVALVIA, known commonly as scallops. They possess flat, almost circular shells and are found in all seas from shallow water to great depths.
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.

Sensitization to king scallop (Pectin maximus) and queen scallop (Chlamys opercularis) proteins. (1/66)

OBJECTIVE: To report a case of occupational asthma and urticaria due to the queen scallop (Chlamys opercularis) and king scallop (Pectin maximus). BACKGROUND: A 40-year-old female worked in a shellfish-processing plant, handling king and queen scallops for 5 years. At the time of investigation, she described a 2-year history of work-related respiratory symptoms. METHODS: Serial peak expiratory flow rate readings were recorded and an OASYS study completed. A workplace visit was undertaken and specific immunoglobulin (IgE) radioallergosorbent (RAST) testing of scallop extracts was performed. RESULTS: The OASYS study was consistent with occupational asthma. RAST testing demonstrated evidence of specific sensitization (IgE) to queen and king scallop. There was also some cross-reactivity observed with other shellfish (prawns and crabs). CONCLUSION: Workers exposed to aerosols from scallop species are at risk of occupational asthma and require effective respiratory health surveillance.  (+info)

Reducing effect of feeding powdered scallop shell on the body fat mass of rats. (2/66)

The lipolytic effect of powdered scallop shells was estimated in vitro and in vivo. The scallop shells consisted of 98% calcium carbonate and 2% organic compounds, the extracted organic components promoted lipolysis in 3T3-L1 adipocyte cells. Male Wistar rats were fed on an experimental diet containing either the scallop shell powder or calcium carbonate (control) for 28 d. Feeding the scallop shell powder resulted in a decrease in body weight and in the weight of white adipose tissue. While the organ weights of the liver, kidney, testis, pancreas, and spleen, and of the brown adipose tissue relative to the body weight were no different between the scallop shell powder diet and control diet, the white adipose tissue weight relative to the body weight significantly decreased in the rats fed on the scallop shell powder. The glycerol concentration in the serum increased in the rats fed on the scallop shell powder, suggesting that this promoted lipolysis in the adipose tissue. These results show that the organic components in the scallop shells induced the decrease in weight of the adipose tissue due to the promotion of lipolysis.  (+info)

Hepatoprotective effect of a hot-water extract from the edible thorny oyster Spondylus varius on carbon tetrachloride-induced liver injury in mice. (3/66)

The edible thorny oyster, Spondylus varius (Mizuiri-shoujou), was found to suppress the carbon tetrachloride-induced increase in serum aspartate and alanine aminotransferase activities in mice. Significant suppressive effects on these enzyme activities were found in the fraction eluted with 75% ethanol from polystyrene gel in a dose-dependent manner. These results suggest that S. varius exerts a protective effect against liver injury.  (+info)

Generation of high-affinity chicken single-chain Fv antibody fragments for measurement of the Pseudonitzschia pungens toxin domoic acid. (4/66)

Antibody-based assay systems are now accepted by regulatory authorities for detection of the toxins produced by phytoplankton that accumulate in shellfish tissues. However, the generation of suitable antibodies for sensitive assay development remains a major challenge. We have examined the potential of using the chicken immune system to generate high-affinity, high-specificity recombinant antibody fragments against phytotoxins. Following immunization of the chicken with domoic acid-bovine serum albumin, a single-chain antibody variable region (scFv) gene library was generated from single V(H) and V(L) genes isolated from the immune cells in the spleen and bone marrow. scFvs reacting with domoic acid were isolated by phage display and affinity matured by light chain shuffling, resulting in an approximate 10-fold increase in sensitivity. The isolated scFvs were effectively expressed in Escherichia coli and readily purified by affinity chromatography. They were then used to develop a convenient and sensitive indirect competitive enzyme-linked immunosorbent assay for domoic acid, with a 50% effective dose of 156 ng/ml, which could be used reliably with shellfish extracts. This study demonstrates that chickens provide a valuable model system for the simplified, rapid generation of high-affinity recombinant antibody fragments with specificity for small toxin molecules.  (+info)

Application of the iterative helical real-space reconstruction method to large membranous tubular crystals of P-type ATPases. (5/66)

Since the development of three-dimensional helical reconstruction methods in the 1960's, advances in Fourier-Bessel methods have facilitated structure determination to near-atomic resolution. A recently developed iterative helical real-space reconstruction (IHRSR) method provides an alternative that uses single-particle analysis in conjunction with the imposition of helical symmetry. In this work, we have adapted the IHRSR algorithm to work with frozen-hydrated tubular crystals of P-type ATPases. In particular, we have implemented layer-line filtering to improve the signal-to-noise ratio, Wiener-filtering to compensate for the contrast transfer function, solvent flattening to improve reference reconstructions, out-of-plane tilt compensation to deal with flexibility in three dimensions, systematic calculation of Fourier shell correlations to track the progress of the refinement, and tools to control parameters as the refinement progresses. We have tested this procedure on datasets from Na(+)/K(+)-ATPase, rabbit skeletal Ca(2+)-ATPase and scallop Ca(2+)-ATPase in order to evaluate the potential for sub-nanometer resolution as well as the robustness in the presence of disorder. We found that Fourier-Bessel methods perform better for well-ordered samples of skeletal Ca(2+)-ATPase and Na(+)/K(+)-ATPase, although improvements to IHRSR are discussed that should reduce this disparity. On the other hand, IHRSR was very effective for scallop Ca(2+)-ATPase, which was too disordered to analyze by Fourier-Bessel methods.  (+info)

Jet propulsion in the cold: Mechanics of swimming in the Antarctic scallop Adamussium colbecki. (6/66)

Unlike most bivalves, scallops are able to swim, relying on a shell with reduced mass and streamlined proportions, a large fast-twitch adductor muscle and the elastic characteristics of the shell's hinge. Despite these adaptations, swimming in scallops is never far from failure, and it is surprising to find a swimming scallop in Antarctica, where low temperature increases the viscosity of seawater, decreases the power output of the adductor muscle and potentially compromises the energy storage capability of the hinge material (abductin, a protein rubber). How does the Antarctic scallop, Adamussium colbecki, cope with the cold? Its shell mass is substantially reduced relative to that of temperate and tropical scallops, but this potential advantage is more than offset by a drastic reduction in adductor-muscle mass. By contrast, A. colbecki's abductin maintains a higher resilience at low temperatures than does the abductin of a temperate scallop. This resilience may help to compensate for reduced muscle mass, assisting the Antarctic scallop to maintain its marginal swimming ability. However, theory suggests that this assistance should be slight, so the adaptive value of increased resilience remains open to question. The high resilience of A. colbecki abductin at low temperatures may be of interest to materials engineers.  (+info)

Feeding scallop shell powder induces the expression of uncoupling protein 1 (UCP1) in white adipose tissue of rats. (7/66)

Previously we found that the organic components in scallop shell promote lipolysis in differentiated 3T3-L1 and C3H10T1/2 adipocyte cells, and that incorporating scallop shell powder into the diet of rats reduced the amount of white adipose tissue. In this study, we used RT-PCR to investigate the effect of ingesting scallop shell powder on the gene expression profile of uncoupling proteins (UCPs) regulating energy metabolism in rats. Feeding of scallop shell powder increased mRNA levels of UCP1 and UCP2 in white adipose tissue. By contrast, scallop shell powder had no effect on the expression of UCP1 in brown adipose tissue, although the expression level of UCP2 mRNA decreased significantly. These results suggest that feeding scallop shell powder increases gene expression of UCP1 that may regulate energy metabolism in white adipose tissue, resulting in the observed reduction in weight of white adipose tissue.  (+info)

1.8 A bright-state structure of the reversibly switchable fluorescent protein Dronpa guides the generation of fast switching variants. (8/66)

RSFPs (reversibly switchable fluorescent proteins) may be repeatedly converted between a fluorescent and a non-fluorescent state by irradiation and have attracted widespread interest for many new applications. The RSFP Dronpa may be switched with blue light from a fluorescent state into a non-fluorescent state, and back again with UV light. To obtain insight into the underlying molecular mechanism of this switching, we have determined the crystal structure of the fluorescent equilibrium state of Dronpa. Its bicyclic chromophore is formed spontaneously from the Cys62-Tyr63-Gly64 tripeptide. In the fluorescent state, it adopts a slightly non-coplanar cis conformation within the interior of a typical GFP (green fluorescent protein) b-can fold. Dronpa shares some structural features with asFP595, another RSFP whose chromophore has previously been demonstrated to undergo a cis-trans isomerization upon photoswitching. Based on the structural comparison with asFP595, we have generated new Dronpa variants with an up to more than 1000-fold accelerated switching behaviour. The mutations which were introduced at position Val157 or Met159 apparently reduce the steric hindrance for a cis-trans isomerization of the chromophore, thus lowering the energy barrier for the blue light-driven on-to-off transition. The findings reported in the present study support the view that a cis-trans isomerization is one of the key events common to the switching mechanism in RSFPs.  (+info)

"Pectinidae" is not a medical term. It is a taxonomic category in the field of biology, specifically a family of marine bivalve mollusks commonly known as scallops. The members of this family are characterized by their fan-shaped shells and their ability to swim by clapping their valves together. If you have any questions about a medical term, I would be happy to help with that instead.

Mollusca is not a medical term per se, but a major group of invertebrate animals that includes snails, clams, octopuses, and squids. However, medically, some mollusks can be relevant as they can act as vectors for various diseases, such as schistosomiasis (transmitted by freshwater snails) and fascioliasis (transmitted by aquatic snails). Therefore, a medical definition might describe Mollusca as a phylum of mostly marine invertebrates that can sometimes play a role in the transmission of certain infectious diseases.

Pectinidae. This species is farmed at an industrial level off mainland China, but production was devastated by a series of ...
... is a species of scallop, a marine bivalve mollusc in the family Pectinidae. It is found in the ... Raines, B. K.; G. T. Poppe (2006). The Family Pectinidae. Hackenheim: ConchBooks. ISBN 3-925919-78-3. (Articles with short ... Pectinidae) in the south-west lagoon of New Caledonia" (PDF). Aquatic Living Resources. 7: 39-46. doi:10.1051/alr:1994005. John ... description, Short description is different from Wikidata, Articles with 'species' microformats, Pectinidae, Bivalves described ...
Pectinidae) from the Indo-Pacific Ocean. Journal of Molluscan Studies. 80(4): 400-411 Wikimedia Commons has media related to ... Pectinidae) from the Indo-Pacific Ocean". Journal of Shellfish Research. 80 (4): 400-411. doi:10.1093/mollus/eyu038. Dijkstra, ... Pectinidae, Seafood, Molluscs described in 1861, All stub articles, Bivalve stubs). ... HH (2000). "A contribution to the knowledge of the Pectinacean Mollusca (Bivalvia: Propeamussiidae, Entoliidae, Pectinidae) ...
Pectinidae) from the Indo-Pacific Ocean. Journal of Molluscan Studies. 80(4): 400-411 v t e (Articles with short description, ... Ylistrum is a genus of marine bivalve mollusks in the family Pectinidae, the scallops. Species in the genus Ylistrum Ylistrum ... Short description is different from Wikidata, Articles with 'species' microformats, Pectinidae, Bivalve genera, All stub ...
... is a genus of bivalves belonging to the family Pectinidae. The species of this genus are found in Western North ... Articles with 'species' microformats, Pectinidae, Bivalve genera). ...
... is a genus of bivalves belonging to the family Pectinidae. The genus is found in Japan and Western America. ... Articles with 'species' microformats, Pectinidae, Bivalve genera). ...
... is a genus of bivalves belonging to the family Pectinidae. The genus has almost cosmopolitan distribution. Species: ... Articles with 'species' microformats, Pectinidae, Bivalve genera). ...
... is a genus of bivalves belonging to the family Pectinidae. The species of this genus are found in Indian and ... Articles with 'species' microformats, Pectinidae, Bivalve genera). ...
Entoliidae and Pectinidae) from the Vanuatu Archipelago. Zoosystema 34(2): 389-408 (Articles with 'species' microformats, ...
"The Family Pectinidae". In: Poppe, G. T. & Groh, K.: A Conchological Iconography. 402 pp., 320 color plts., ConchBooks, ... Pectinidae and Spondylidae); Molluscan Research 28(1): 1-88; published 14 Mar. 2008 (abstract) v t e (Articles with short ... Entoliidae and Pectinidae) from the Vanuatu Archipelago. Zoosystema 34(2): 389-408. [29 June 2012] Gofas, S. (2012). ... Pectinidae (scallops) Pleuronectitidae † Propeamussiidae some are known as glass scallops Spondylidae thorny oysters ...
... is a genus of bivalve molluscs within the family Pectinidae. There are currently 18 members of this genus, with ... Articles with 'species' microformats, Pectinidae, Bivalve genera). ...
Haumea is a genus of bivalves belonging to the family Pectinidae. The species of this genus are found in Indian and Pacific ... Articles with 'species' microformats, Pectinidae, Bivalve genera). ...
... is a genus of bivalves belonging to the family Pectinidae. The species of this genus are found in Far East Asia. ... Articles with 'species' microformats, Pectinidae, Bivalve genera). ...
casa van Bruggen, 1961 - South Africa, (Bivalvia, Pectinidae). Afromelittodes Oldroyd & van Bruggen, 1963, type species ...
Articles with 'species' microformats, Pectinidae, Fauna of Antarctica, Bivalve genera). ... Pectinidae) from Antarctica". Polish Polar Research. 31 (4): 292. doi:10.2478/v10183-010-0006-0. Patrick G. Quilty; Thomas A. ...
... is a bivalve in the family Pectinidae. brown form, right valve brown form, left valve purple form, right ... v t e (Articles with short description, Short description matches Wikidata, Articles with 'species' microformats, Pectinidae, ...
A new fossil Adamussium (Bivalvia: Pectinidae) from Antarctica. Polish polar research 31(4):291-302 P. M. Rees and C. J. Cleal ...
Pectinidés, 1912 (with Arthur René Jean Baptiste Bavay) - Pectinidae. Sinistrorsités et dextrorsités tératologiques chez les ...
... is a bivalve in the family Pectinidae. MolluscaBase eds. (2021). "Mimachlamys gloriosa (Reeve, 1853)". ...
It is a marine mollusc in the family Pectinidae. This species is found around the southern African coast, from Saldanha Bay to ... Pectinidae, Bivalves described in 1795, Taxa named by Giuseppe Saverio Poli, All stub articles, Bivalve stubs). ...
... is a genus of scallops in the family Pectinidae. This genus contains 8 extant species and one extinct species (V. ...
... is a genus of molluscs in the family Pectinidae. Bractechlamys adorabilis (Dijkstra & Roussy, 1994) Bractechlamys ... Pectinidae, Bivalve genera, All stub articles, Bivalve stubs). ...
... is a genus of molluscs in the family Pectinidae. Caribachlamys imbricata (Gmelin, 1791) - Little knobby scallop ... Pectinidae, Bivalve genera, All stub articles, Bivalve stubs). ...
Additionally, eyes in Pectinidae exhibit a reduction in functionality as habitat depth increases, ending in the complete ... Malkowsky, Yaron; Klussmann-Kolb, Annette (May 2012). "Phylogeny and spatio-temporal distribution of European Pectinidae ( ... Pectinidae, the scallops Family: Propeamussiidae, the mud scallops Family: Spondylidae, the thorny oysters (File shells and ... "Impact of habitat and life trait on character evolution of pallial eyes in Pectinidae (Mollusca: Bivalvia)". Organisms ...
... is a bivalve mollusc of the family Pectinidae. Powell A. W. B., New Zealand Mollusca, William Collins ...
... is a genus of molluscs in the family Pectinidae. Cryptopecten phrygium (Dall, 1886) - spathate scallop Abbott, R.T ... Pectinidae, Bivalve genera, All stub articles, Bivalve stubs). ...
They are marine bivalve molluscs in the family Pectinidae, the scallops. This species is found around the South African coast, ... Pectinidae, Bivalves described in 1842, All stub articles, Bivalve stubs). ...
... is a genus of bivalves belonging to the family Pectinidae. The species of this genus are found in Europe and ...
... is a species of bivalve in the family Pectinidae. It is endemic to Ecuador. Finet, Y. (1996). "Nodipecten ... Pectinidae, Endemic fauna of the Galápagos Islands, Bivalves described in 1835, Taxonomy articles created by Polbot, All stub ...
... is a genus of bivalves belonging to subfamily Pedinae of the family Pectinidae. Scaeochlamys lemniscata (Reeve, ... New bathyal species and records of Pectinoidea (Bivalvia: Propeamussiidae and Pectinidae) from Taiwan. Bulletin of Malacology, ... 17(4): 157-189 Dijkstra, H. H. (2013). Pectinoidea (Bivalvia: Propeamussiidae and Pectinidae) from the Panglao region, ...
more related to Pecten fumatus Reeve, 1852 from Australia and Pecten novaezelandiae Reeve, 1852 from New Zealand but the broad, square ribs on the right valve are typical for the species ...
Click on the miniatures to see the full-size originals.. China has developed a scallop culture industry since the 1980s with the introduction of a species from South America, Agropecten irradians. Culture of this species is often associated with shrimp farming and the rearing of the Japanese scallop Patinopecten yessoensis.. Both Japanese and Chinese scallop aquaculture regressed in the period 97-98 but have since recovered with production totals stabilising around 1.3 million tonnes.. Production of another scallop Agropecten purpuratus has developed in South America, mainly on the coasts of Chile and Peru. These scallops are exported to Europe.. FAO 2007 (2005 production) All production data are given in total weight (flesh + shell). ...
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Pectinidae. This species is farmed at an industrial level off mainland China, but production was devastated by a series of ...
A scallop pearl is a non-nacreous calcareous concretion produced by any member of the Pectinidae (scallop) family. Pectinids ...
A further 29 species (12 Propeamussiidae and 17 Pectinidae) are new records from Australia. Subfamily Pedinae Bronn, 1862 and ... Recent Pectinoidea (Propeamussiidae, Cyclochlamydidae and Pectinidae) of Australia and neighbouring seas are revised and 105 ... Cyclochlamydidae and Pectinidae). Serial Title. Records of the Australian Museum. Volume. 70. Issue. 2. Start Page. 113. End ... Cyclochlamydidae and Pectinidae). * Author. Henk H. Dijkstra; Alan G. Beu ...
Biodiversity change and extinction risk in Plio-Pleistocene Mediterranean bivalves: the families Veneridae, Pectinidae and ... Biodiversity change and extinction risk in Plio-Pleistocene Mediterranean bivalves: the families Veneridae, Pectinidae and ...
Cyclochlamydidae and Pectinidae). Henk H Dijkstra ...
Animalia (kingdom) » Mollusca (phylum) » Bivalvia (class) » Pectinoida (order) » Pectinidae (family) CAAB Code: 23 270906 show ... 23 270000 Pectinidae. Child Codes:. 23 270004 Annachlamys flabellata. 23 270038 Annachlamys iredalei. 23 270052 Annachlamys ... Cyclochlamydidae and Pectinidae)., Records of the Australian Museum, Vol. 70(2): 113-330. . doi.org/10.3853/j.2201-4349.70. ...
MOLLUSCA : OSTREOIDA : Pectinidae. SNAILS, SLUGS, ETC.. Palliolum tigerinum (O F Müller, 1776). ...
Propeamussiidae and Pectinidae) from Taiwan. ,em,Bulletin of Malacology, Taiwan.,/em, 33: 37-54., available online at https:// ...
Review of the European Pectinidae (Mollusca: Bivalvia). Vita Marina. 41 (1): 3-48.. ...
Pectinidae, Ginger, Salmo salar, Influenza B virus, ethylenediamine (ethylenediamine dihydroiodide), human DNASE1 protein ( ...
unassigned] Pectinidae (temporary name). *"Montereina" sensu Dayrat, 2010 (unaccepted > unavailable name). *"Montereina" ...
Article: Morphological-phylogenetic analysis of the late Cenozoic Chlamydini von Teppner (Bivalvia, Pectinidae) of southern ...
Scallops are the family Pectinidae of bivalve molluscs. http://en.wikipedia.org/wiki/Scal…. or http://www.encyclopedia.com/html ...
Scallops (Family Pectinidae) Observer. danimations Date. June 15, 2023 04:47 PM ACST ...
Family Agariciidae, Siderastreidae, Fungiidae, Oculinidae, Merulinidae, Mussidae, Pectinidae, Caryophyllidae, Dendrophylliidae ...
Scallops (family Pectinidae) have the most acute visual sensory organs of any bivalves. An individual scallop will usually have ... Second Place - Scallops (family Pectinidae) have the most acute visual sensory organs of any bivalves. An individual scallop ...
Scallops are Pectinidae, perhaps the coquilles St. Jacques name was derived from cockle. ...
Scallops (scientific name Pectinidae. ): Another popular seashell, the scallop-shaped shell is easily identifiable. It is fan- ...
Different approaches by scientists and technicians regarding growth and farming of Pectinidae mollusks - "callos". $61.50 ...
Calico Scallops are members of the Scallop family Pectinidae. Many Scallops are capable of short (and fast) bursts of swim, ...
Pectinidae) of the Red Sea. ,em,Molluscan Research.,/em, 19 (2): 43-103., available online at https://doi.org/10.1080/ ...
Barbara Haviland, USA (she and her husband Frank are experts in the Scallop family (Pectinidae)) ...
Family Pectinidae > Subfamily Pedinae > Genus Aequipecten Aequipecten opercularis (Linnaeus, 1758). Rank: Species. Taxon Status ...
가리비와 그 밖의 펙티니대(Pectinidae)과의 연체동물 Scallops and other molluscs of the family Pectinidae : HS0308 수생(水生) 무척추동물(갑각류와 연체동물은 제외하며, ...
Les Gigantopecten (Pectinidae, Bavalvia) du Miocène français (Croissance - Morphogenèse - Paléoécologie). BONGRAIN M. 1988. - . ... Révision de Flabellipecten solarium (Lamarck, 1819) (Mollusca, Bivalvia, Pectinidae) du Miocène moyen et supérieur de lAncien ... Révision de Flabellipecten solarium (Lamarck, 1819) (Mollusca, Bivalvia, Pectinidae) du Miocène moyen et supérieur de lAncien ... Les accumulations de Gigantopecten restitutensis (Fontannes, 1884) (Mollusca: Bivalvia: Pectinidae) dans le Burdigalien ...
  • Bathyal and abyssal Pectinoidea from the Red Sea and Gulf of Aden (Bivalvia: Propeamussiidae, Entoliidae, Pectinidae). (marinespecies.org)
  • Stries de croissance révéléespar cathodoluminescence dans la coquille de Pecten maximus (L.) récent de la rade de Brest (Pectinidae, Bivalvia). (unibe.ch)
  • Scallops (family Pectinidae) have complex eyes with a lens and retina. (britannica.com)
  • Scallop () is a common name that encompasses various species of marine bivalve mollusks in the taxonomic family Pectinidae, the scallops. (definitions.net)
  • Looks like Pectinidae, but not enough there to place to genus, let alone age. (manandmollusc.net)
  • They are molluscs belonging to the Pectinidae family and characterized by brightly coloured and fan-shaped shells, similar to oysters and clams. (foodofy.com)
  • Belonging to the Pectinidae family, these bivalve mollusks offer intriguing traits. (opoint.com)