Results 181 to 190 of about 5,435 (222)
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Epizootiology and Pathology of Juvenile Oyster Disease in the Eastern Oyster, Crassostrea virginica
Journal of Invertebrate Pathology, 2001Juvenile Oyster Disease (JOD) causes mortalities of small cultured oysters, Crassostrea virginica. The present study was an intensive epizootiological and pathological investigation of JOD in eight sequentially deployed cohorts at sites on Long Island, New York. JOD symptoms and mortalities began in all groups at about the same time.
S E, Ford, F J, Borrero
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Aquaculture, 2016 Eastern oyster, Crassostrea virginica, aquaculture has expanded greatly in recent years, but further growth of the industry is constrained by disease-related losses. Oyster breeding programs supporting the oyster aquaculture industry along the east coast
Dina A Proestou +2 more
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The accumulation and loss of dieldrin and endrin in the Eastern oyster
Archives of Environmental Contamination and Toxicology, 1976Oysters demonstrated an ability to significantly concentrate dieldrin and endrin. Concentration ratios obtained after 168-hr exposures to endrin were 1670 at 0.1 mug/L and 2780 at 50 mug/L. Dieldrin was concentrated to higher levels. Exposure to 14C-labelled dieldrin at 0.5 mug/L produced whole body concentrations 2880 times the ambient level at 168 hr,
J W, Mason, D R, Rowe
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Hemocyte-Mediated Shell Mineralization in the Eastern Oyster
Science, 2004The growth of molluscan shell crystals is usually thought to be initiated from solution by extracellular organic matrix. We report a class of granulocytic hemocytes that may be directly involved in shell crystal production for oysters. On the basis of scanning electron microscopy (SEM) and x-ray microanalysis, these granulocytes contain calcium ...
Andrew S, Mount +3 more
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An Apparatus for Maintaining Eastern Oysters in the Laboratory
The Progressive Fish-Culturist, 1991Abstract An apparatus that provides a continuous inflow of seawater is described in which eastern oysters (Crassostrea virginica) were maintained for 185 d in the laboratory with no mortalities. The effectiveness of this system during periods of high temperature and salinity may be useful in research and culture of eastern oysters.
Joseph D. Gray +2 more
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Persistence of MS-2 Bacteriophage Within Eastern Oysters
Food and Environmental Virology, 2017Male-specific bacteriophages have been proposed as human enteric virus indicators for shellfish. In this study, Eastern oysters (Crassostrea virginica) were individually exposed to 5.6 × 1010 PFU of MS-2 for 48 h at 15 °C followed by collective maintenance in continuously UV-sterilized seawater for 0-6 weeks at either 7, 15, or 24 °C.
David H, Kingsley +2 more
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Siltation negatively affects settlement and gaping behaviour in eastern oysters
Marine Environmental Research, 2021While high levels of siltation are known to be deleterious to eastern oysters (Crassostrea virginica), the collective effect of suspended and bedded sediment is understudied from the perspective of oyster farming and bed restoration. In this study, we used laboratory experiments to explore spat settlement rates on a wild bed proxy substrate (i.e ...
Luke A. Poirier +8 more
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Intraspecific variation influences natural settlement of eastern oysters
Oecologia, 2013As populations decline, their intraspecific diversity also diminishes. Population decline may be exacerbated if a decrease in intraspecific diversity also reduces important ecological functions that maintain population numbers. Oyster reefs are severely overharvested, declining by ~85 % worldwide.
Delbert L, Smee +3 more
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In-situ microplastic egestion efficiency of the eastern oyster Crassostrea virginica
Marine Pollution Bulletin, 2022Microplastics (MP) are a pervasive environmental pollutant that enter coastal water bodies, posing an ingestion risk to marine biota. This study quantified the ability of the Eastern oyster (Crassostrea virginica) to egest MP in-situ in their biodeposits - feces and pseudofeces. Oysters of all sizes were able to egest environmental MP at a mean rate of
Casey A, Craig +3 more
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The bioconcentration and metabolism of chlorpyrifos by the eastern oyster,Crassostrea virginica
Environmental Toxicology and Chemistry, 2003AbstractEastern oysters (Crassostrea virginica) were exposed to [14C]chlorpyrifos (O,O-diethyl-O-[3,5,6-trichloro-2-pyridyl] phosphorothioate) at an average measured seawater concentration of 0.6 μg/L under flow-through conditions for 28 d. The compound O,O-diethyl-O-(3,5-dichloro-6-methylthio-2-pyridyl)phosphorothioate (DMP) was extracted and ...
Kent B, Woodburn +3 more
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