In this paper we examine the effect of reproductive interference on the dynamics of two mosquito vectors of public health concern and add to the growing literature on the strength and speed with which interspecific reproductive interference may drive evolution. Recent evidence supports a role for asymmetric reproductive interference, or satyrization, in competitive displacements of Aedes aegypti by Aedes albopictus. However, populations of A. aegypti sympatric with A. albopictus in nature evolve resistance to satyrization. Here we report that A. aegypti from Tucson, AZ (USA), where A. albopictus are not known to occur, are satyrization-susceptible. Furthermore, in cage experiments we demonstrate rapid evolution in satyrization-susceptible lines. Exposing allopatric strains of A. aegypti to A. albopictus in cages led to significant reductions, within 1–3 generations, in the frequency of reproductive interference. We also demonstrate that satyrization-resistant A. aegypti females derived from selection experiments are significantly slower to mate with conspecific males, suggesting a cost for the evolution of satyrization-resistance. Results show how interspecific interactions between these vector species are rapidly evolving, with implications for the arboviral diseases, especially dengue and chikungunya, which they transmit.

中文翻译：

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登革热载体埃及伊蚊对种间交配的接受性降低的快速进化以响应侵入性白纹伊蚊的饱和化

在本文中，我们研究了生殖干扰对两种引起公众健康关注的蚊媒动态的影响，并增加了越来越多的关于种间生殖干扰可能推动进化的强度和速度的文献。最近的证据支持在白纹伊蚊对埃及伊蚊的竞争性置换中，不对称生殖干扰或饱和化的作用。然而，在自然界中与 A. albopictus 同域的 A. aegypti 种群进化出对饱和化的抵抗力。在这里，我们报告了来自美国亚利桑那州图森市的 A. aegypti，在那里，A. albopictus 未知发生，对饱和化敏感。此外，在笼子实验中，我们证明了饱和易感系的快速进化。将 A. aegypti 的异源菌株暴露于笼子中的 A. albopictus 导致显着减少，在1-3代内，在生殖干扰的频率上。我们还证明，从选择实验中获得的抗饱和 A. aegypti 雌性与同种雄性交配的速度要慢得多，这表明抗性进化的成本。结果显示这些载体物种之间的种间相互作用如何迅速演变，对它们传播的虫媒病毒疾病，尤其是登革热和基孔肯雅热有影响。