3种有机磷农药对厚壳贻贝幼贝的急性毒性研究

Acute toxicity of three organophosphorus pesticides to juveniles Mytilus coruscus Gould

中文摘要:

      2007年8月间开展了三唑磷、乙酰甲胺磷和敌敌畏对厚壳贻贝幼贝的急性毒性试验。结果表明，三唑磷、乙酰甲胺磷和敌敌畏对厚壳贻贝幼贝24、48、72和96 h的半致死质量浓度依次为105.065、1 537.437和3.796 mg/L； 103.518、1 493.609和3.612 mg/L; 102.057、1 433.898和3.3473347 mg/L; 97.150、1 357.158和3.067 mg/L。厚壳贻贝幼贝对三唑磷、乙酰甲胺磷和敌敌畏对安全质量浓度分别为9.715、135.716和 0.307 mg/L。各药物对厚壳贻贝幼贝的毒性强度由大到小依次为敌敌畏、三唑磷和乙酰甲胺磷。

英文摘要:

      Acute toxicity of triazophos, acephate and dichlorvos on Mytilus coruscus juveniles were studied in aquaculture laboratory of Zhejiang Ocean University in August 2007. The result indicated that the median lethal concentrations (LC50) of triazophos at 24,48,72 and 96hours to Mytilus coruscus juveniles were 105065 mg/L,103518 mg/L,102057mg/L and 97150 mg/L, respectively. LC50 of acephate at 24,48,72 and 96hours to Mytilus coruscus juveniles were 1 537437mg/L,1493609mg/L,1 433898 mg/L and1 357158mg/L, LC50 of acephate at 24,48,72 and 96hours to Mytilus coruscus juveniles were 3796 mg/L,3612 mg/L,3347 mg/L and 3067 mg/L. At the same time,it is discovered that the safety concentrations(SC) of triazophos, acephate and dichlorvos on Mytilus coruscus juveniles were 9715 mg/L,135716 mg/L and 0307 mg/L. So the toxicity of the three pesticides to Mytilus coruscus juveniles ranked as dichlorvos＞triazophos＞acephate.Finally,the acute toxicity effects, death jump characteristics and SC of triazophos, acephate and dichlorvos on Mytilus coruscus juveniles were discussed.