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为探究拟除虫菊酯类农药对埋栖贝类的毒性作用,本文研究了甲氰菊酯、溴氰菊酯和氯氰菊酯对毛蚶(Scapharca subcrenata)幼贝和成贝的急性毒性效应及其物种敏感度分布。研究表明,甲氰菊酯、溴氰菊酯和氯氰菊酯对毛蚶幼贝的96 h半致死浓度(LC50)值分别为286.5、23.4和17.9 ng·mL-1,对成贝的96 h LC50值分别为3 931.9、709.5和737.7 ng·mL-1,说明相较成贝毛蚶幼贝对3种拟除虫菊酯类农药更敏感。多物种毒性数据比对发现,贝类对3种菊酯的敏感性低于已报道的鱼类和甲壳类,物种敏感度分布模型分析表明,基于保护95%水生生物种类的甲氰菊酯、溴氰菊酯和氯氰菊酯毒性阈值分别为0.20、0.01和0.02 ng·mL-1。研究结果可为我国近海环境中3种拟除虫菊酯类农药使用中的生态风险评估提供理论依据。
Abstract：The acute toxicity and species sensitivity distribution(SSD) of three synthetic pyrethroid insecticides(SPIs) including fenpropathrin, deltamethrin and cypermethrin on juveniles and adults of Scapharca subcrenata were studied. The results indicated that the 96 h halflethal concentration(LC50) of fenpropathrin, deltamethrin and cypermethrin was 286.5, 23.3 and 17.9 ng·mL-1 for juveniles, respectively, and the 96 h LC50 values for its adults was 3 931.9, 709.5 and 737.7 ng·mL-1, respectively. Juveniles were more sensitive to the tested SPIs than adults. Based on the SSD models, the toxicity thresholds of fenpropathrin, deltamethrin and cypermethrin for 95% protection of aquatic organisms was 0.20, 0.01 and 0.02 ng·mL-1, respectively. Ours results provided the basic data for ecological risk assessment of SPIs in coastal environment.
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基本信息:
DOI：10.16441/j.cnki.hdxb.20210007
中图分类号:X171.5
引用信息:
[1]孙策,苗晶晶,李莉,等.三种拟除虫菊酯对毛蚶的急性毒性效应及其物种敏感度分布研究[J],2021,51(12):133-140.DOI:10.16441/j.cnki.hdxb.20210007.
基金信息:
国家重点研究发展计划项目(2019YFD0901704);; 山东省现代农业产业技术体系建设专项资金项目(SDAIT-14-04)资助~~
2021-01-10
2021
2021-03-27
2021-06-18
2021
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