کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9456535 1309201 2005 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dietary mercury exposure and bioaccumulation in amphibian larvae inhabiting Carolina bay wetlands
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Dietary mercury exposure and bioaccumulation in amphibian larvae inhabiting Carolina bay wetlands
چکیده انگلیسی
Inorganic mercury and methylmercury concentrations were measured both in guts and remaining carcasses of southern leopard frog (Rana sphenocephala) larvae from 10 Carolina bay wetlands in South Carolina, USA. Significant variation among bays in methylmercury and inorganic mercury concentrations existed both in guts and carcasses. There was a moderate negative correlation between dissolved organic carbon concentration in bays and mean inorganic mercury concentrations in guts. There was also a weak positive correlation between pH in bays and mean methylmercury concentrations in carcasses. The ratio of methylmercury to inorganic mercury decreased with increasing total mercury concentration in guts and in larvae, but the rate of decrease was highly variable among bays. Ratios of concentrations in carcasses to concentrations in guts were inversely related to gut concentration. Mercury concentrations in carcasses in some bays were within the range of concentrations at which adverse effects have been observed in laboratory studies of R. sphenocephala.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 135, Issue 2, May 2005, Pages 245-253
نویسندگان
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