摘要
以水体不同浓度铬 (CrCl3 6H2 o)处理草鲤鱼卵和鱼苗 ,观察铬对鱼卵的发育和鱼苗的毒性作用。结果表明 :铬处理组浓度高于 ( 2mg/L)对鱼苗、鱼胚发育有毒性作用 ;染毒 7天内 ,10mgCr/L组鱼苗致死率 30 % ,草、鲤鱼卵孵化率分别下降 4 6%和 88 9% ;15mgCr/L组草鱼苗致死率达 10 0 % ,鱼卵孵化率为零。
The eggs and fries from grass carps and common carps were treated with different concentrations chromium in water body.It was found that toxic effects was caused at the concentration of more than 2mg/L groups treated with Cr.The fries lethal rate of 10 mg Cr/L groups reached to 30% during 168h.The eggs hatching rate of grass carps and common carps descended 46% and 88.9% respectively.The fries lethal rate of grass carps in 15 mg Cr/L group was 100% and the eggs hatching rate was zero.The endurance to chromium of two kinds of fish has no significantly.
出处
《水产学杂志》
CAS
2000年第2期32-35,共4页
Chinese Journal of Fisheries
