COLLATERAL DAMAGE: RAPID EXPOSURE-INDUCED EVOLUTION OF PESTICIDE RESISTANCE LEADS TO INCREASED SUSCEPTIBILITY TO PARASITES
COLLATERAL DAMAGE: RAPID EXPOSURE-INDUCED EVOLUTION OF PESTICIDE RESISTANCE LEADS TO INCREASED SUSCEPTIBILITY TO PARASITES
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DOI：
10.1111/j.1558-5646.2011.01331.x
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发表时间：
2011-09-01
期刊：
影响因子：
3.3
通讯作者：
de Meester, Luc
中科院分区：
文献类型：
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作者：
Jansen, Mieke;Stoks, Robby;de Meester, Luc
尽管自然种群可能进化出对污染物等人为压力源的抗性，但这种进化出的抗性可能会带来代价。采用实验进化的方法，将不同的水蚤种群置于室外容器中，分别暴露于氨基甲酸酯类农药西维因和对照条件下，并评估了结果种群对西维因的抗性以及对广泛存在的细菌微寄生虫拉莫萨巴氏菌感染的敏感性。我们的研究结果表明，当在良性环境中评估时，西威因的选择导致了西威因耐药性的快速进化，而似乎没有成本。然而，抗西巴威种群比对照种群更容易感染寄生虫。暴露于这两种胁迫源下，对拉莫沙菌的灭菌率有协同作用，但这种协同作用在农药选择下没有进化。在半自然环境下评估快速适应进化对人为压力的代价，对于避免对进化种群的适应性做出过于乐观的预测至关重要。
Although natural populations may evolve resistance to anthropogenic stressors such as pollutants, this evolved resistance may carry costs. Using an experimental evolution approach, we exposed different Daphnia magna populations in outdoor containers to the carbamate pesticide carbaryl and control conditions, and assessed the resulting populations for both their resistance to carbaryl as well as their susceptibility to infection by the widespread bacterial microparasite Pasteuria ramosa. Our results show that carbaryl selection led to rapid evolution of carbaryl resistance with seemingly no cost when assessed in a benign environment. However, carbaryl-resistant populations were more susceptible to parasite infection than control populations. Exposure to both stressors reveals a synergistic effect on sterilization rate by P. ramosa, but this synergism did not evolve under pesticide selection. Assessing costs of rapid adaptive evolution to anthropogenic stress in a semi-natural context may be crucial to avoid too optimistic predictions for the fitness of the evolving populations.