Fitness Costs of an Insecticide Resistance and their Population Dynamical Consequences in the Oriental Fruit Fly
Fitness Costs of an Insecticide Resistance and their Population Dynamical Consequences in the Oriental Fruit Fly
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DOI：
10.1603/ec11200
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发表时间：
2011-12
期刊：
影响因子：
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通讯作者：
C.-C. Fang-C.;T. Okuyama;Wen-Jer Wu;H. Feng;J. Hsu
中科院分区：
文献类型：
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作者：
C.-C. Fang-C.;T. Okuyama;Wen-Jer Wu;H. Feng;J. Hsu
摘要 Naled 是台湾和其他国家常用的杀虫剂，用于控制东方果蝇 Bactrocera dorsalis (Hendel) 的数量。橘小实蝇已对杀虫剂产生抗药性，抗药性管理是一个重要问题。当充分理解阻力的生态效应（例如，适应成本）时，可以用于阻力管理。本研究通过比较杀虫剂抗性个体和易感个体的性状，研究了杀虫剂抗性对东方果蝇重要生活史性状（即存活率、阶段持续时间和繁殖力）的影响。还使用用经验数据参数化的阶段结构矩阵模型检查了种群动态特性。结果显示，易感个体的阶段持续时间较短（例如，生长更快），并且比耐药个体繁殖更多。性成熟易感成年人的平均寿命比性成熟抵抗成年人长。矩阵种群模型预测，在没有杀虫剂的情况下，易感个体的种群将比抗性个体的种群增长得更快。该模型的敏感性分析表明，性未成熟的成虫阶段是控制橘小实蝇种群的良好候选者。
ABSTRACT Naled is a commonly used insecticide for controlling populations of the oriental fruit fly, Bactrocera dorsalis (Hendel), in Taiwan and other countries. B. dorsalis has developed resistance to the insecticide, and the resistance management is an important issue. Ecological effects (e.g., fitness costs) of the resistance, when fully understood, can be used for the resistance management. This study examined the effects of the insecticide resistance on important life history traits (i.e., survival rates, stage durations, and fecundity) of the oriental fruit fly by comparing the traits of insecticide resistant individuals and susceptible individuals. Population dynamical properties were also examined using a stage-structured matrix model that was parameterized with the empirical data. The results revealed that susceptible individuals had shorter stage durations (e.g., grew faster) and reproduced more than resistant individuals. The average longevity of sexually mature susceptible adults was longer than that of sexually mature resistant adults. The matrix population model predicted that a population of the susceptible individuals would grow faster than a population of the resistant individuals in the absence of the insecticide. The sensitivity analysis of the model suggests that the sexually immature adult stage is a good candidate for controlling B. dorsalis populations.