Results 181 to 190 of about 4,815 (218)
Some of the next articles are maybe not open access.
Crassostrea virginica grazing on toxic and non-toxic diatoms
Toxicon, 2010Despite 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 +3 more
openaire +2 more sources
Cryopreservation of spermatozoa of the American oyster, Crassostrea virginica Gmelin
Cryobiology, 1979Abstract 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
openaire +2 more sources
Arsenic uptake and loss in the American oyster, Crassostrea virginica
Environmental Monitoring and Assessment, 1982In 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
openaire +2 more sources
Crassostrea virginica as an indicator of cadmium pollution
Marine Biology, 1980As much as 89, 176 and 292 μg Cd g-1 dry weight were accumulated by adult Crassostrea virginica after treatment for 40 wk with 5, 10 and 15 μg Cd kg-1, respectively, in flowing seawater at ambient salinity and temperature without mortalities. Cadmium accumulation increased with increased concentration of cadmium in seawater; greater amounts were ...
openaire +1 more source
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
openaire +2 more sources
Seasonal variation in lysosomal destabilization in oysters, Crassostrea virginica
Marine Environmental Research, 2002Lysosomal 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 +2 more
openaire +2 more sources
The Eastern oyster: Crassostrea virginica
Choice Reviews Online, 1997Thomas M. Soniat +3 more
openaire +2 more sources
Fertilization Interference Between Crassostrea ariakensis and Crassostrea virginica: A Gamete Sink
Journal of Shellfish Research, 2008Published data indicate that spawning seasons for the Asian oyster Crassostrea ariakensis and the eastern oyster C. virginica overlap. Hybrids can form, but the larvae are not viable. If C. ariakensis is introduced into Chesapeake Bay and synchronous spawning occurs with native C.
David Bushek +5 more
openaire +1 more source
Quantitative studies on trehalose in the oyster, Crassostrea virginica Gmelin
Comparative Biochemistry and Physiology, 1967Abstract 1. 1. Trehalose was identified in the oyster, Crassostrea virginica Gmelin, and found to be present throughout the period of one year in amounts ranging from 0·188 mg/g wet wt. to 3·300 mg/g wet wt. 2. 2. Trehalose levels remained constant except for February and July, when they were significantly elevated. 3. 3.
openaire +2 more sources
of the oyster, Crassostrea virginica
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1981Shin-ichi Teshima, Glenn W. Patterson
openaire +1 more source