摘要
[目的]研究联苯菊酯和醚菊酯对真鲷的急性毒性效应和安全浓度.[方法]采用静水式换水补药方法,研究联苯菊酯和醚菊酯对真鲷的急性毒性,并进行安全性评价.[结果]在水温(20.4±0.3)℃下,联苯菊酯对真鲷的24 h LC50、48 h LC50、72 h LC50和96 h LC50分别为2.50、1.36、0.96、0.84μg/L,安全浓度为0.12μg/L;醚菊酯对真鲷的24 h LC50、48 h LC50、72 h LC50和96 h LC50分别为17.80、2.81、1.04、0.54 mg/L,安全浓度为0.02 mg/L.联苯菊酯对真鲷为剧毒物质,醚菊酯为高毒物质.联苯菊酯对真鲷的毒性大于醚菊酯.[结论]作为鱼药使用时,应特别注意联苯菊酯的用药浓度和时间.
Abstract
[Objective]To study the acute toxicity effect and safe concentration of bifenthrin and ethofenprox to Pagrosomus major.[Method]The acute toxicity of bifenthrin and ethofenprox on P.major was studied by semi-static bioassay test,and their safety evaluation was made.[Result]At water temperature of (20.4 ±0.3)℃,24 h LC50 ,48 h LC50 ,72 h LC50 and 96 h LC50 values of bifenthrin on P.major were 2.50,1.36,0.96 and 0.84 μg/L,respectively,and those of ethofenprox on P.major were 17.80,2.81,1.04,0.54 mg/L,respectively.The safe concentrations (SC) of bifenthrin and ethofenprox on P.major were estimated as 0.12 μg/L and 0.02 mg/L,respectively.Bifenthrin and ethofenprox belonged to ex-tremely high toxicity grade and high toxicity grade on P.major, respectively.[Conclusion]When bifenthrin was used for fishery drugs,its dose and duration should be cautiously adjusted.
基金项目
福建省海洋与渔业厅重点项目(闽海渔20101-02 号)
国家科技期刊平台
NSTL
维普
万方数据