LIFE-HISTORY COSTS ASSOCIATED WITH THE EVOLUTION OF INSECTICIDE RESISTANCE
LIFE-HISTORY COSTS ASSOCIATED WITH THE EVOLUTION OF INSECTICIDE RESISTANCE
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DOI：
10.1098/rspb.1994.0138
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发表时间：
1994-10-22
影响因子：
4.7
通讯作者：
VINCENT, C
中科院分区：
文献类型：
--
作者：
CARRIERE, Y;DELAND, JP;VINCENT, C
农业系统中杀虫剂抗性的强定向选择有利于抗性等位基因频率的增加。假设抗性等位基因对生活史性状具有负多效性，这种基因频率的变化预计会导致适应度成本的逐步增加。因此，对适合度成分的负面影响应随着暴露于不同杀虫剂方案的种群的抗性程度而增加。本研究的目的是评估杀虫剂抗性的选择是否导致了斜纹卷叶虫（chistoneura rosaceana）生活史性状的进化变化。在当地地理区域内，农药抗性存在显著差异。与对农药高度敏感的未施药种群相比，施药种群的16日活质量较低，蛹质量较小，发育时间较长。因此，在葡萄球菌中，农药抗性与生命史成本有关。这表明，交替使用斜纹卷叶虫不耐的杀虫剂可能是一种有价值的管理策略。适应度成分与抗性之间也存在显著的跨种群相关性。这些关系可能说明了一种机制，可以通过自然选择限制种群的进化反应。
Strong directional selection for insecticide resistance in agricultural systems favours an increase in frequency of resistance allele(s). Provided that the resistance allele(s) has negative pleiotropic effects on life-history traits, such a change in gene frequency is expected to result in a progressive increase in fitness costs. Therefore, negative impacts on fitness components should increase with the degree of resistance across populations exposed to different insecticide regimes. The aim of this study was to assess whether selection for insecticide resistance resulted in such an evolutionary change in life-history traits in the obliquebanded leafroller, Choristoneura rosaceana. Within a local geographic area there was significant variation in pesticide resistance. Compared with unsprayed populations, which were highly susceptible to pesticides, resistant populations had lower 16 day live mass, smaller pupal mass, and longer development time. Thus, in C. rosaceana pesticide resistance is associated with life-history costs. This suggests that an alternation of insecticides to which the obliquebanded leafroller is not resistant could be a valuable strategy to manage this species. There were also significant across-population correlations between the fitness components and resistance. These relations may illustrate a mechanism that can limit evolutionary responses of populations by natural selection.