摘要
以鲤鱼为研究对象,对常用农药氯氰菊酯通过食物链(蔬菜-黄粉虫幼虫-鲤鱼)在鲤鱼肾脏和小肠内的富集效应进行了研究。饲喂的蔬菜农药残留剂量为2.00mg·kg-1和10.00mg·kg-1,通过HPLC定量检测黄粉虫幼虫体内及鲤鱼肾脏和小肠内氯氰菊酯的富集浓度,同时对鲤鱼肾脏和小肠组织结构进行了观察。结果显示,氯氰菊酯在黄粉虫幼虫及鲤鱼体内的富集浓度与剂量呈正相关,在食物链中的富集呈逐级递增,且对黄粉虫幼虫及鲤鱼的摄食情况及活动能力有明显的影响,随着处理时间的延长及剂量的增大,氯氰菊酯对鲤鱼肾脏及小肠结构损伤程度也增大。因此,杀虫剂氯氰菊酯的使用会通过食物链对环境中生物乃至人类健康和生态平衡造成影响,应慎重使用。
Cypermethrin, which is frequently used in agricultural practice as an important pesticide, was used in this paper to detect the con- centration of bio-pollutants in kidney and intestine of carp Cyprinus carp io entered through the food chain （cabbage-Tenebrio molitor larva- carp ）. Cabbage plants were spread with eypermethrin to create a gradient of cypermethrin residue value of 0, 2.00 mg.kg^-1 and 10.00 mg. kg^-1. The values of cypermethrin in the larvae of T. molitor as well as in the organs of carps were determined by HPLC. The tissue structures of kid ney and intestine of carps were observed for any abnormalities. The results indicated that there was a positive correlation between cypermethrin accumulation values and the residue values. The concentration of eypermethrin in the larvae and in the organs of carps went up as time extends. The concentration of cypennethrin in the intestine was higher than that in the kidney. The appetite and activity of the larvae and the fishes were also appeared to be affected. Cypermethrin was toxic to larvae and caused high mortality in the treated larvae. Further more, the structures of kidney and intestine were appeared to be affected by cypermethrin with the increase of treatment time and dose. Therefore, caution should be taken when use cypermethrin because of its effect on organism, human health and ecological balance.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2009年第8期1640-1644,共5页
Journal of Agro-Environment Science
基金
国家自然科学基金(30770390)
关键词
氯氰菊酯
食物链
鲤鱼
生物富集
cypermethrin
food chain
Cyprinus carpio
bioaccumulation
