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首页> 外文期刊>Ecological research >Assessment of fitness costs of resistance against the parasitoid Leptopilina victoriae in Drosophila bipectinata
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Assessment of fitness costs of resistance against the parasitoid Leptopilina victoriae in Drosophila bipectinata

机译：评估果蝇双侧果蝇对寄生性维多利亚小白对虾的抗性适应成本

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摘要

How insects evolve resistance or counter-resistance against antagonists is a basic issue in the study of host-parasitoid coevolution. One of the factors that affect their coevolution is fitness costs of resistance and counter-resistance. Here, we assess fitness costs of resistance against the parasitoid Leptopilina victoriae in Drosophila bipectinata on the basis of selection experiments. We made a base population by mixing three geographic fly populations that differed in resistance. The established base population was divided into four populations, two for selection of resistance against a L. victoriae population and two for control. Resistance increased rapidly in response to selection and reached a very high level within four generations in the selected populations, while resistance of the control populations remained low during 20 generations. High resistance of the selected populations was maintained at least for 10 generations after selection was stopped. Both selected populations had lower female longevity than the control populations, and at least one of the selected populations had shorter thorax length, lower female desiccation tolerance and adult heat tolerance than both or either of the control populations. On the other hand, the selected populations had higher male starvation tolerance and longevity than the control populations. There were no significant differences in resistance against another population of L. victoriae and two other parasitoid species between the selected and control populations. These results suggest that the resistance against the L. victoriae population in D. bipectinata may incur some but not so high costs and act parasitoid-species- and/or parasitoid-population-specifically.
机译：昆虫如何进化出对拮抗剂的抗性或抗性是研究宿主-拟寄生物协同进化的一个基本问题。影响其协同进化的因素之一是抗性和抗性的适应性成本。在这里，我们根据选择实验评估了对果蝇双侧果蝇中的寄生性拟南芥Leptopilina victoriae的抗性适应成本。我们通过混合三个具有不同抗性的地理苍蝇种群来建立基本种群。已建立的基本种群分为四个种群，两个用于选择对维多利亚乳杆菌种群的抗性，两个用于控制。抵抗力随选择而迅速增加，并在选定种群中的四代内达到很高的水平，而对照种群的抗性在二十代中仍然很低。停止选择后，所选种群的高抗性至少维持了十代。所选择的两个种群的女性寿命均低于对照种群，并且至少一个所选择的种群的胸部长度较短，女性干燥耐性和成年耐热性均低于对照种群或其中一个。另一方面，所选择的种群比对照种群具有更高的男性饥饿耐受性和寿命。在选择的种群和对照种群之间，对另一种L. victoriae维多利亚种群和另外两种寄生寄生虫的抗性没有显着差异。这些结果表明，对双歧线虫维氏乳杆菌种群的抗性可能会产生一些但不是很高的成本，并特异性地寄生于寄生物种类和/或寄生物种类。

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  • 来源
    《Ecological research》 |2014年第6期|1033-1041|共9页
  • 作者

    Tomohiro Takigahira; Awit Suwito; Masahito T. Kimura;

  • 作者单位

    Graduate School of Environmental Earth Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan;

    Zoology Division (Museum Zoologicum Bogoriense), Research Center for Biology, LIPI, Cibinong, Bogor, Indonesia;

    Graduate School of Environmental Earth Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Artificial selection; Coevolution; Specificity; Trade-offs;

    机译：人工选择;协同进化特异性;权衡取舍;

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