Results 171 to 180 of about 19,077 (217)

Induced Adhesion in Crassostrea virginica Larvae

Science, 1975
Normal motile veliger larvae of the oyster, Crassostrea virginica , were observed swimming in pairs or trios. Adhesion between animals is firm and has a specific orientation. This adhesion can be induced in low frequencies by culturing larvae at high densities, and in much higher frequencies by inclusion of an ...
R, Ukeles, W E, Rose
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Crassostrea virginica as an indicator of lead pollution

Marine Biology, 1979
After treatment with 1.0 and 3.3 μg Pb kg-1 for 20 weeks in flowing seawater at ambient salinity and temperature, Crassostrea virginica accumulated as much as 6.57 and 11.42 μg g-1 dry weight, respectively, and no mortalities were recorded. Lead uptake was curvilinear; however, the general trend was an increase in lead concentration over time.
G. E. Zaroogian, G. Morrison, J. F. Heltshe   +2 more
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Lysozyme in the hemolymph of the oyster, Crassostrea virginica

Journal of Invertebrate Pathology, 1967
Abstract Oyster hemolymph lyses suspensions of some gram-positive bacteria and degrades cell walls isolated from Micrococcus lysodeikticus with the release of amino and reducing sugars. This indicates that the bacteriolytic substance in oyster hemolymph is lysozyme.
Joseph E. McDade, M.R. Tripp
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Comparative Microbial Dynamics in Crassostrea virginica and Crassostrea ariakensis

2021
Center for Coastal Fisheries and Habitat ...
Bean, Tanya J., Morris, Jr., J.A., Noble, Rachel T., Fowler, Patricia K.   +3 more
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Di- and tribromoindoles in the common oyster (Crassostrea virginica)

Chemosphere, 2003
The sources/origins, fate and impacts of naturally occurring organobromine compounds in the marine environment are largely unknown. Soft tissue composites of the common oyster (Crassostrea virginica) collected from coastal Georgia (USA) were analyzed for organobromines by gas chromatography.
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Crassostrea virginica grazing on toxic and non-toxic diatoms

Toxicon, 2010
Despite high abundances of toxic Pseudo-nitzschia spp. over Louisiana oyster beds (Crassostrea virginica; eastern oyster) there have been no documented cases of amnesic shellfish poisoning (ASP) in the state. Two possible explanations are that oysters do not readily feed on long pointed chains of Pseudo-nitzschia cells or they discriminate against ...
A E, Thessen, T M, Soniat, Q, Dortch, G J, Doucette   +3 more
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Seasonal variation in lysosomal destabilization in oysters, Crassostrea virginica

Marine Environmental Research, 2002
Lysosomal destabilization assays have been used as valuable biomarkers of pollutant exposures in a variety of bivalve and fish species. The responses of oysters, Crassostrea virginica, deployed at and native to various reference and degraded sites were evaluated for lysosomal destabilization during both summer and winter seasons.
Amy H, Ringwood, Jennifer, Hoguet, Charles J, Keppler   +2 more
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Expression of P-glycoprotein in southeastern oysters, Crassostrea virginica

Marine Environmental Research, 2001
These studies provide important fundamental information regarding the expression of P-glycoprotein (p-gp) in southeastern oysters (Crassostrea virginica). Using rhodamine transport studies, p-gp activity was detected in newly fertilized embryos. A monoclonal antibody (C219) was used to evaluate p-gp expression in oyster tissues.
C J, Keppler, A H, Ringwood
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Cryopreservation of spermatozoa of the American oyster, Crassostrea virginica Gmelin

Cryobiology, 1979
Abstract Spermatozoa of the American oyster Crassostrea virginica were frozen to −196 °C in concentrated Hanks' salt solution (2.6×) containing 8% dimethyl sulfoxide. About 0.2 ml of spermatozoa that were stored in liquid nitrogen for 68 days fertilized 91% of 65,600 eggs compared to fresh spermatozoa, which fertilized 92% of approximately the same ...
S R, Zell, M H, Bamford, H, Hidu
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Arsenic uptake and loss in the American oyster, Crassostrea virginica

Environmental Monitoring and Assessment, 1982
In addition to a control Crassostrea virginica was treated with 3 and 5 μg As kg(p-1) for 16 wks at ambient seawater salinity and temperature to determine the potential of C. virginica as an indicator of arsenic pollution. Prior to spawning, as much as 10.3±1.5, 12.7±2.7, and 14.1±3.7 μg As g(p-1) dry weight were accumulated in the total soft parts of ...
G E, Zaroogian, G L, Hoffman
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