Genetic interactions between the parasitoid wasp Leptopilina boulardi and its Drosophila hosts
Genetic interactions between the parasitoid wasp Leptopilina boulardi and its Drosophila hosts
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DOI：
10.1038/sj.hdy.6800893
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发表时间：
2007-01-01
期刊：
影响因子：
3.8
通讯作者：
Carton, Y.
中科院分区：
文献类型：
--
作者：
Dubuffet, A.;Dupas, S.;Carton, Y.
宿主和寄生虫之间的共同进化军备竞赛如果没有寄生结果所涉及的性状的遗传变异，就不会发生。抗性和毒力的遗传变异很少被描述在成对的主机-寄生虫的相互作用，从来没有分析过多物种的相互作用，相反，良好的特征植物-病原体的相互作用。本文报道了雅库巴果蝇（Drosophila yakuba）对鲍氏细蛾（Leptopilina boulardi）抗性的遗传变异。分析了抗性的遗传基础和地理分布。在此基础上，我们证明了对寄生蜂L.的不同抗性模式。boulardi in D.黑腹果蝇D. yakuba，以及不同的特异性水平的寄生虫物种，表明在该领域的复杂的生态相互作用。这第一次描述的抗性-毒力之间的遗传相互作用的寄生蜂和它的两个寄主物种提供的经验数据表明，多物种的相互作用可能会极大地影响共同进化过程。
Coevolutionary arms races between hosts and parasites would not occur without genetic variation for traits involved in the outcome of parasitism. Genetic variations in resistance and virulence have only rarely been described in pairwise host-parasitoid interactions and have never been analysed in multi-species interactions, in contrast to well-characterized plant-pathogen interactions. This paper reports genetic variation in resistance of Drosophila yakuba to the parasitoid wasp Leptopilina boulardi. The genetic basis and geographic distribution of resistance is analysed. On the basis of these and previous findings, we demonstrate that there are different resistance patterns to the parasitoid species L. boulardi in D. melanogaster and D. yakuba, as well as different specificity levels in the parasitoid species, suggesting complex ecological interactions in the field. This first description of resistance - virulence genetic interactions between a parasitoid and its two host species provides empirical data showing that multi-species interactions may greatly influence coevolutionary processes.