硫丹和狄氏剂对多刺裸腹的毒性效应
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国家自然科学基金项目(No.30470323);教育部科学技术研究重点基金项目(No.051286);安徽省优秀青年基金项目(No.04043050);安徽省教育厅自然科研基金重点项目(No.2003kj032zd);重要生物资源的保护和利用研究安徽省重点实验室专项基金项目


Toxicological Effects of Endosulfan and Dieldrin on Moina macrocopa
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    摘要:

    为了解亚致死浓度的有机氯农药硫丹和狄氏剂对枝角类的急性、慢性和联合毒性作用,采用急性毒性实验方法研究了硫丹和狄氏剂对多刺裸腹(Moinamacrocopa)的48h半效应浓度,应用生命表实验方法研究了亚致死浓度的硫丹(0、52和208μg/L)和狄氏剂(0、12和48μg/L)对多刺裸腹生命表统计学参数的影响。结果表明,硫丹及狄氏剂对多刺裸腹的48h半效应浓度是834.9和185.8μg/L。硫丹对多刺裸腹出生时的生命期望(e0)、世代时间(T)和净生殖率(R0)有显著的影响(P<0.05),但对种群内禀增长率(rm)没有显著的影响(P>0.05);狄氏剂仅对种群内禀增长率有显著的影响(P<0.05);硫丹与狄氏剂的交互作用对所有生命表统计学参数均无显著影响(P>0.05)。与硫丹浓度为0时相比,52和208μg/L的硫丹均使多刺裸腹的e0和T显著缩短,R0显著降低;与狄氏剂浓度为0时相比,48μg/L的狄氏剂使多刺裸腹的rm显著升高。这说明硫丹与狄氏剂对多刺裸腹的联合作用形式是独立相加,没有产生协同作用。

    Abstract:

    In order to investigate acute,chronic and joint toxicity of sublethal concentrations of endosulfan and dieldrin,the half-effect concentrations of endosulfan and dieldrin to Moina macrocopa were tested respectively,and the effects of endosulfan(0,52 and 208 μg/L) and dieldrin(0,12 and 48 μg/L) on the life table demography of the cladoceran were studied.The results showed that the EC50 values to endosulfan and dieldrin for M.macrocopa were 834.9 and 185.8 μg/L,respectively.The endosulfan concentration affected significantly the life expectancy at birth,generation time and net reproductive rate,but did not influence the intrinsic rate of population increase of M.macrocopa.The dieldrin concentration affected markedly only intrinsic rate of population increase.The interactions between endosulfan and dieldrin concentrations on all the life-table demographic parameters of M.macrocopa were not significant.Compared with those when the concentration of endosulfan was zero,endosulfan at 52 and 208 μg/L decreased markedly the life expectancy at birth,generation time and net reproductive rate.Compared with those when the concentration of dieldrin was zero,dieldrin at 48 μg/L increased the intrinsic rate of population increase of M.macrocopa.

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何忠文,席贻龙,陈艳.2009.硫丹和狄氏剂对多刺裸腹的毒性效应.动物学杂志,44(5):86-91.

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  • 收稿日期:2009-02-16
  • 最后修改日期:2009-06-26