کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9482706 1327513 2005 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sublethal effects of the toxic alga Heterosigma akashiwo on the southeastern oyster (Crassostrea virginica)
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم آبزیان
پیش نمایش صفحه اول مقاله
Sublethal effects of the toxic alga Heterosigma akashiwo on the southeastern oyster (Crassostrea virginica)
چکیده انگلیسی
Over the last three years, several blooms of Heterosigma akashiwo (Raphidophyceae) were documented in South Carolina (SC) brackish waters, including areas containing extensive oyster (Crassostrea virginica) beds. This study examined the sublethal effects of H. akashiwo on C. virginica, based on cellular biomarker responses after exposure to laboratory cultures of H. akashiwo isolated from SC waters, and to water collected from two SC H. akashiwo blooms. Exposure to laboratory cultures or blooms of H. akashiwo significantly increased oyster hepatopancreas lysosomal destabilization rates, but had little effect on gill p-glycoprotein (p-gp) expression. Lysosomal destabilization in oysters continued to increase even after a 7-day recovery period in clean seawater, suggesting that H. akashiwo toxin or other cellular byproducts continued to damage the hepatopancreas. These results suggest that even short-term exposures of oysters to high cell densities of H. akashiwo could have long-term adverse physiological effects, and imply that oyster health may be compromised in areas where repetitive H. akashiwo blooms occur.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Harmful Algae - Volume 4, Issue 2, February 2005, Pages 275-285
نویسندگان
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