کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4427480 1619216 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Metal bioaccumulation and metallothionein concentrations in larvae of Crassostrea gigas
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Metal bioaccumulation and metallothionein concentrations in larvae of Crassostrea gigas
چکیده انگلیسی

Larval stages of bivalve molluscs are highly sensitive to pollutants. Oysters from a hatchery from Normandy (English Channel) were induced to spawn, and fertilized eggs were exposed to copper or cadmium for 24 h. Metal accumulation (from 0.125 to 5 μg Cu L−1 and from 25 to 200 μg Cd L−1) and MT concentrations were measured in larvae. Compared to controls, larvae accumulated copper and cadmium with an increase in MT concentrations particularly with cadmium (i.e. 130.96 ng Cu (mg protein)−1 and 12.69 μg MT (mg protein)−1 at 1 μg Cu L−1 versus 23.19 ng Cu (mg protein)−1 and 8.92 μg MT (mg protein)−1 in control larvae; 334.3 ng Cd (mg protein)−1 and 11.70 μg MT (mg protein)−1 at 200 μg Cd L−1 versus 0.87 ng Cd (mg protein)−1 and 4.60 μg MT (mg protein)−1 in control larvae). Larvae were also obtained from oysters of a clean area (Arcachon Bay) and a polluted zone (Bidassoa estuary) and exposed to copper in the laboratory, their MT concentration was measured as well as biomarkers of oxidative stress. Biomarker responses and sensitivity to copper for the larvae from Arcachon oysters were higher than for those from Bidassoa.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 140, Issue 3, April 2006, Pages 492–499
نویسندگان
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