scholarly journals Differential effects of the severe winter of 1995/96 on the intertidal bivalves Mytilus edulis , Cerastoderma edule and Mya arenaria in the Northern Wadden Sea

2001 ◽  
Vol 55 (3) ◽  
pp. 190-197 ◽  
Author(s):  
Matthias Strasser ◽  
Torsten Reinwald ◽  
Karsten Reise
Keyword(s):  
Mytilus Edulis ◽  
Wadden Sea ◽  
Mya Arenaria ◽  
Severe Winter ◽  
Cerastoderma Edule ◽  
Differential Effects

Trial Control of the Greater Clam Drill (Lunatia heros) by Manual Collection

1958 ◽  
Vol 15 (6) ◽  
pp. 1355-1369 ◽  
Author(s):  
J. C. Medcof ◽  
L. W. Thurber
Keyword(s):  
Mytilus Edulis ◽  
Mya Arenaria

Soft-shelled clams (Mya arenaria) 38 mm. long were planted 172 per m.2 in three 10 m.2 plots in a sandy flat where none occurred naturally but where there were 6 drills per m.2 feeding on mussels (Mytilus edulis). After plantings, at least 300 drills entered each plot daily. After 12 days clam survival was only 19% in the plot where there was no protection; 31% where soil was raked before planting and exposed drills removed (84% efficient); 34% where this pre-planting clearance was combined with 8 post-planting, low-tide, manual collections of surfacing drills (3% to 5% efficient). These intense efforts had little effect and would be unjustified on public beds even if much more effective. Drills kill more than half their prey without boring their shells. A higher proportion of the drill population comes to the surface by night (6%) than by day (3%) and small drills are unexplainably scarce.

Évaluation écotoxicologique de la baie des Anglais à Baie-Comeau (Québec)

1993 ◽  
Vol 28 (4) ◽  
pp. 665-686 ◽  
Author(s):  
Jocelyne Pellerin-Massicotte ◽  
Bruno Vincent ◽  
Émilien Pelletier
Keyword(s):  
Mytilus Edulis ◽  
Mya Arenaria

Résumé La baie des Anglais à Baie-Comeau (Québec) est un site industriel reconnu comme étant contaminé aux hydrocarbures et aux biphényls polychlorés (BPC). Une expérience de transfert à moyen terme de deux bivalves marins, Mya arenaria et Mytilus edulis L., a été réalisée entre un site de référence en aval de la baie des Anglais (Franquelin) et des sites contaminés près de Baie-Comeau suivant un gradient de contamination déterminé selon des données physico-chimiques antérieures. Les analyses chimiques de contaminants ont montré qu’il n’y a pas eu d’enrichissement en hydrocarbures, au mercure et en BPC pour toute la durée du protocole mais, parmi les sondes bioanalytiques choisies pour évaluer l’état de santé de cet écosystème, celles qui se sont avérées les plus sensibles chez Mya arenaria furent le glycogène et les lipides dans les gonades, et pour les deux bivalves, la fragilité de la membrane lysosomale de la glande digestive qui est un excellent indicateur de stress toxique. Les présents résultats sont compatibles avec un modèle qui consisterait à établir une évaluation ecotoxicologique d’un écosystème que l’on soupçonne perturbé par la pollution par (i) l’analyse de la bioaccumulation des substances toxiques que l’on croit présentes dans l’écosystème (hydrocarbures, BPC et métaux lourds) et (ii) l’évaluation des effets physiologiques et biochimiques des polluants à l’aide de sondes bioanalytiques appropriées.

scholarly journals Density dependence of growth and production in a Wadden Sea population of the cockle Cerastoderma edule

2015 ◽  
Vol 538 ◽  
pp. 157-167 ◽  
Author(s):  
JJ Beukema ◽  
R Dekker
Keyword(s):  
Density Dependence ◽  
Wadden Sea ◽  
Cerastoderma Edule

scholarly journals Extracellular Vesicles and Post-Translational Protein Deimination Signatures in Mollusca—The Blue Mussel (Mytilus edulis), Soft Shell Clam (Mya arenaria), Eastern Oyster (Crassostrea virginica) and Atlantic Jacknife Clam (Ensis leei)

Biology ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 416
Author(s):  
Timothy J. Bowden ◽  
Igor Kraev ◽  
Sigrun Lange
Keyword(s):  
Mytilus Edulis ◽  
Crassostrea Virginica ◽  
Blue Mussel ◽  
Binding Protein ◽  
Pdz Domain ◽  
Eastern Oyster ◽  
Mya Arenaria ◽  
Beta Catenin ◽  
Soft Shell Clam ◽  
Soft Shell

Oysters and clams are important for food security and of commercial value worldwide. They are affected by anthropogenic changes and opportunistic pathogens and can be indicators of changes in ocean environments. Therefore, studies into biomarker discovery are of considerable value. This study aimed at assessing extracellular vesicle (EV) signatures and post-translational protein deimination profiles of hemolymph from four commercially valuable Mollusca species, the blue mussel (Mytilus edulis), soft shell clam (Mya arenaria), Eastern oyster (Crassostrea virginica), and Atlantic jacknife clam (Ensis leei). EVs form part of cellular communication by transporting protein and genetic cargo and play roles in immunity and host–pathogen interactions. Protein deimination is a post-translational modification caused by peptidylarginine deiminases (PADs), and can facilitate protein moonlighting in health and disease. The current study identified hemolymph-EV profiles in the four Mollusca species, revealing some species differences. Deiminated protein candidates differed in hemolymph between the species, with some common targets between all four species (e.g., histone H3 and H4, actin, and GAPDH), while other hits were species-specific; in blue mussel these included heavy metal binding protein, heat shock proteins 60 and 90, 2-phospho-D-glycerate hydrolyase, GTP cyclohydrolase feedback regulatory protein, sodium/potassium-transporting ATPase, and fibrinogen domain containing protein. In soft shell clam specific deimination hits included dynein, MCM3-associated protein, and SCRN. In Eastern oyster specific deimination hits included muscle LIM protein, beta-1,3-glucan-binding protein, myosin heavy chain, thaumatin-like protein, vWFA domain-containing protein, BTB domain-containing protein, amylase, and beta-catenin. Deiminated proteins specific to Atlantic jackknife clam included nacre c1q domain-containing protein and PDZ domain-containing protein In addition, some proteins were common as deiminated targets between two or three of the Bivalvia species under study (e.g., EP protein, C1q domain containing protein, histone H2B, tubulin, elongation factor 1-alpha, dominin, extracellular superoxide dismutase). Protein interaction network analysis for the deiminated protein hits revealed major pathways relevant for immunity and metabolism, providing novel insights into post-translational regulation via deimination. The study contributes to EV characterization in diverse taxa and understanding of roles for PAD-mediated regulation of immune and metabolic pathways throughout phylogeny.

Inhalant and exhalant pressures in Mytilus edulis L. and Cerastoderma edule (L.)

1986 ◽  
Vol 98 (3) ◽  
pp. 231-240 ◽  
Author(s):  
Hugh D. Jones ◽  
Janette R. Allen
Keyword(s):  
Mytilus Edulis ◽  
Cerastoderma Edule

Microbial utilization of the neurotoxin domoic acid: blue mussels (Mytilus edulis) and soft shell clams (Mya arenaria) as sources of the microorganisms

1998 ◽  
Vol 44 (5) ◽  
pp. 456-464 ◽  
Author(s):  
James E. Stewart ◽  
L.J. Marks ◽  
M.W. Gilgan ◽  
E. Pfeiffer ◽  
B.M. Zwicker
Keyword(s):  
Mytilus Edulis ◽  
Domoic Acid ◽  
Mya Arenaria ◽  
Blue Mussels ◽  
Microbial Utilization ◽  
Soft Shell ◽  
Acid Blue
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