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首页> 外文期刊>Limnology >Enhanced sensitivity to an insecticide carbaryl in Daphnia magna mediated by fish kairomone
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Enhanced sensitivity to an insecticide carbaryl in Daphnia magna mediated by fish kairomone

机译:增强由鱼酮莫纳介导的Daphnia Magna杀虫剂Carbaryl的敏感性

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摘要

Fish kairomone-exposed Daphnia produce smaller offspring than unexposed mothers. These smaller offspring are expected to be more vulnerable to pesticides because Daphnia show size-dependent chemical sensitivity. To evaluate the potential effects of fish kairomone on the acute toxicity of an insecticide, carbaryl, in D. magna, we compared the offspring produced by adults reared in the absence and presence of fish in terms of body length and 48-h EC50. We also tested the sensitivities of juveniles of different ages but similar body sizes. The results indicated that sensitivity to carbaryl was not simply determined by the body size of D. magna. The tolerance of D. magna to pesticide may be strongly associated with individual energy storage conditions or metabolic costs generated by exposure to fish kairomone.
机译:鱼陶莫昔蒙暴露的Daphnia产生比未曝光的母亲更小的后代。 这些较小的后代预计将更容易受到杀虫剂的影响,因为Daphnia显示尺寸依赖性化学敏感性。 为了评估鱼酮素对杀虫剂的急性毒性的潜在影响,在D.Magna中,我们将成年人产生的后代与体长和48-H EC50进行了比较。 我们还测试了不同年龄的青少年的敏感性,而是相似的身体尺寸。 结果表明,对Carbaryl的敏感性并不是通过D. Magna的体型确定的。 D. Magna对农药的耐受性可能与各个能量储存条件或通过暴露于鱼酮素产生的代谢成本密切相关。

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