渔业研究2017，Vol.39Issue(2)：90-96,7.DOI:10.14012/j.cnki.fjsc.2017.02.002
重金属Cu2+、Cd2+对光裸方格星虫的急性毒性效应
Acute toxicity effect of heavy metal Cu2+and Cd2+onSipunculus nudus
摘要
Abstract
In order to explore the acute toxicity effect of heavy metal ions(Cu2+ and Cd2+)on Sipunculus nudus,we set six concentration gradients and three processing time to observe mortality and histological test of Sipunculus nudus.The results showed that:1)Sipunculus nudus were poisoned in certain concentrations of Cu2+ and Cd2+.The mortality rate of Sipunculus nudus increased with the increasing of heavy metal ions concentration and the extension of processing time,which had the obvious dosage and time effect.(2)The Cu2+ function of toxicity was greater than that of Cd2+ in Sipunculus nudus.The LC50 values of Cu2+ at 48 h and 72 h were 10.60 mg/L and 4.36 mg/L,respectively,and the LC50 values of Cd2+ at 48 h and 72 h were 11.95 mg/L and 5.76 mg/L,respectively.3)The esophagus and gastrointestinal were the mainly and first part poisoned in Sipunculus nudus of heavy metals.关键词
光裸方格星虫/Cu2+/Cd2+/急性中毒/半致死浓度LC50Key words
Sipunculus nudus/Cu2+/Cd2+/acute toxicity/median lethal concentration(LC50)分类
农业科技引用本文复制引用
陈振国,班庭辉,周鸿凯..重金属Cu2+、Cd2+对光裸方格星虫的急性毒性效应[J].渔业研究,2017,39(2):90-96,7.基金项目
国家自然科学基金(41073059) （41073059）
湛江市科技招标项目(编号:2011C0102). （编号:2011C0102）
