The response of life‐history traits to a new species in the community: a story of Drosophila parasitoids from the Rhône and Saône valleys
The response of life‐history traits to a new species in the community: a story of Drosophila parasitoids from the Rhône and Saône valleys
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DOI：
10.1111/j.1095-8312.2012.01918.x
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发表时间：
2012-09
影响因子：
1.9
通讯作者：
Chloé Vayssade;V. Martel;J. Moiroux;X. Fauvergue;J. V. Alphen;J. Baaren
中科院分区：
文献类型：
--
作者：
Chloé Vayssade;V. Martel;J. Moiroux;X. Fauvergue;J. V. Alphen;J. Baaren
在本研究中，我们调查了一个社区的主要物种的生活史特征的演变，在一个新的竞争对手的到来。两种寄生虫，Leptopilina heterotoma和Asobara tabida，存在于整个罗纳河和索恩河流域，而第三种，Leptopilina boulardi，正在缓慢地向北扩展其分布。在L. boulardi，竞争寄生蜂经历较高的死亡率和较低的主机可用性。因此，应该根据这些新的因素在性状之间重新分配资源。比较了不同种群的生活史特征。heterotoma和A.在有和无L.布拉迪。正如预测价格的平衡死亡率假说和理论的生活史特征，我们发现，在繁殖的投资是较高的，在南方人口的本地物种，再加上较高的旅行能力。然而，只有A. tabida以较低的寿命支付了它们较高的繁殖力。L的这些特征之间缺乏明确的权衡。南方人群的代谢率较低可以解释异瘤的原因。这些结果突出了在这个寄生蜂群落的生活史特征的演变中，社会变化对气候的重要性。© 2012伦敦林奈学会，林奈学会生物学杂志，2012，107，153-165。其他关键词：灰腹蛛-竞争-进化-全球变化-鲍氏纤蛛-异瘤纤蛛-维持-移动-繁殖-权衡。
In the present study, we investigated the evolution of life-history traits in the main species of a community, after the arrival of a new competitor. Two parasitoid species, Leptopilina heterotoma and Asobara tabida, are present throughout the Rhone and Saone valleys, whereas a third species, Leptopilina boulardi, is slowly extending its distribution northwards. In the presence of L. boulardi, competing parasitoids experience a higher mortality and lower host availability. Resources should thus be re-allocated between traits according to these new factors. We compared life-history traits of populations of L. heterotoma and A. tabida in areas with and without L. boulardi. As predicted by both Price's balanced mortality hypothesis and the theory of life-history traits, we found that investment in reproduction is higher in southern populations for both native species, coupled with higher travelling abilities. However, only A. tabida paid their higher fecundity by a lower longevity. The absence of a clear trade-off between these traits in L. heterotoma may be explained by a lower metabolic rate in southern populations. These results highlight the importance of the community change over climate in the evolution of life-history traits in this parasitoid community. © 2012 The Linnean Society of London, Biological Journal of the Linnean Society, 2012, 107, 153-165. ADDITIONAL KEYWORDS: Asobara tabida - competition - evolution - global change - Leptopilina boulardi - Leptopilina heterotoma - maintenance - mobility - reproduction - trade-off.