HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau...

Variation in adhesion strength of Balanus eburneus, crassostrea virginica and hydroides dianthus to fouling-release coatings Christopher J. Kavanagh a; Michael P. Schultz b; Geoffrey W. Swain a; Judith Stein c; Kathryn Truby c;Christina Darkangelo Wood c a Department of Oceanography and Ocean Engineering, Florida Institute of Technology, Melbourne, FL, USA b Ocean Engineering Program, United St...

Suspension-feeding bivalve molluscs can assume a large ecological role by linking benthic and pelagic ecosystems. Therefore, a knowledge of the factors that influence feeding rates and processes at the level of the individual is important in understanding bivalve-dominated environments. We examined the roles of diet quality and concentration on particle processing by the ctenidia of four specie...

Of 222 Vibrio cholerae isolates from diverse clinical and environmental sources, 219 produced visible growth in alkaline peptone broth when incubated overnight at 42 degrees C. In field trials conducted to compare enrichment at incubation temperatures of 42 and 35 degrees C, significantly higher rates of isolation (P less than 0.05) and recovery (P less than 0.01) of V. cholerae from oysters we...

Environmentally-friendly methods for controlling microbial pathogenesis in aquaculture with probiotic bacteria are becoming increasingly preferred over the use of chemical means, such as disinfectants or antibiotics. Previous research at the Milford Laboratory has shown that naturally-occurring bacteria isolated from the digestive glands of adult oysters (Crassostrea virginica) show promise as ...

The protozoan oyster pathogen Perkinsus marinus has infected populations of Crassostrea virginica along the Atlantic and Gulf Coasts of North America since at least the 1940s. Until recently, it was the only Perkinsus sp. pathogen known to exist in the region. During the past decade, independent laboratories have reported P. chesapeaki (now synonymous with P. andrewsi) in softshell clams (Mya a...

Abstract Polydorid species (Annelida, Spionidae), which inhabit the shells of commercially important oyster Crassostrea gigas , were investigated along coast Normandy, France. Eight species, including five new records for Normandy ( Polydora onagawaensis websteri Boccardia pseudonatrix proboscidea and Boccardiella hamata ) two first in European waters P. B. ), identified based on morphological,...

The effects of salinity on the embryonic and larvae stage of Crassostrea iredalei were investigated. Fertilised eggs and one day old D-larvae were subjected to salinities ranging from 0 to 30 ppt at temperature of 30±2°C. At salinity lower than 10 ppt, 100% mortality was observed. For embryo development, the highest survival was observed at salinity 25 ppt with 80.9±2.2% survival with no signif...

In this study, we used 16S rRNA gene amplicons to describe the bacterial microbiota associated with oysters (Crassostrea virginica) and seawater collected from two sites in the Chesapeake Bay. The dominant bacterial groups included those belonging to the order Pelagibacteraceae, family Enterobacteriaceae, and genus Synechococcus The microbiomes varied among oysters from the same site and betwee...

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 producing two sets of progenies in 2002 (Generation 2) and three sets of progenies in 2003 (Generation 3). A strict between-family approach was used and resistance of these selected progenies to summer m...