کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4421349 1308511 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of repeated exposure of diazinon on cholinesterase activity and growth in snakehead fish (Channa striata)
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Effects of repeated exposure of diazinon on cholinesterase activity and growth in snakehead fish (Channa striata)
چکیده انگلیسی

The organophosphate insecticide diazinon is widely used in the Mekong river delta and often applied several times per rice crop. In the present study, juvenile snakehead fish Channa striata, which is a commercially important inhabitant of rice fields, were exposed twice to 4-day pulses of 0.016, 0.079 or 0.35 mg/L of diazinon, separated by a 2 week interval to imitate the exposure conditions in the field. After the 4-day exposures to these environmentally realistic concentrations, the fish were moved to clean water for recovery. During this experiment, which lasted a total of 2 months, the individual growth rates and brain cholinesterase levels were measured. We show not only that diazinon caused long term inhibition of brain ChE activity, which was still significantly depressed at the termination of the experiment, but also that the highest of these realistic concentrations caused a significant 30% growth inhibition.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecotoxicology and Environmental Safety - Volume 72, Issue 3, March 2009, Pages 699–703
نویسندگان
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