Rapid parallel adaptation despite gene flow in silent crickets.
Rapid parallel adaptation despite gene flow in silent crickets.
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DOI：
10.1038/s41467-020-20263-4
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发表时间：
2021-01-04
影响因子：
16.6
通讯作者：
Bailey NW
中科院分区：
文献类型：
--
作者：
Zhang X;Rayner JG;Blaxter M;Bailey NW
基因流动被预测为通过从头突变阻碍平行适应，因为它可以将预先存在的适应等位基因从种群引入种群。我们测试这一点，使用夏威夷蟋蟀（Teleogryllus oceanicus），其中“flatwing”男性，缺乏声音产生的翅膀结构最近出现，并从一个声学定向寄生虫选择下传播。形态和遗传比较确定不同的平翅表型的人口在三个岛屿上，定位于不同的位点。尽管如此，我们检测到强大的，最近的和正在进行的基因流之间的人口。使用基因组扫描和基因表达分析，我们发现，在不同的岛屿上的平翅的平行进化与共享的基因组热点的适应，包含基因doublaex，但选择的形式不同的岛屿，并对应于已知的平翅人口在野外。因此，我们展示了如何平行适应可以发生在当代的时间尺度上，尽管基因流，这表明它可能比以前更少的限制。基因流被认为是通过平行进化阻碍局部适应的经典理论。然而，对来自不同岛屿种群的夏威夷蟋蟀进行的基因组研究发现，尽管存在强大的持续基因流，但有证据表明它们对同一种致命寄生虫的平行适应。
Gene flow is predicted to impede parallel adaptation via de novo mutation, because it can introduce pre-existing adaptive alleles from population to population. We test this using Hawaiian crickets (Teleogryllus oceanicus) in which ‘flatwing’ males that lack sound-producing wing structures recently arose and spread under selection from an acoustically-orienting parasitoid. Morphometric and genetic comparisons identify distinct flatwing phenotypes in populations on three islands, localized to different loci. Nevertheless, we detect strong, recent and ongoing gene flow among the populations. Using genome scans and gene expression analysis we find that parallel evolution of flatwing on different islands is associated with shared genomic hotspots of adaptation that contain the gene doublesex, but the form of selection differs among islands and corresponds to known flatwing demographics in the wild. We thus show how parallel adaptation can occur on contemporary timescales despite gene flow, indicating that it could be less constrained than previously appreciated. Gene flow is classically thought to impede local adaptation via parallel evolution. However, a genomic study on Hawaiian crickets from different island populations finds evidence of parallel adaptation to the same lethal parasitoid in spite of strong ongoing gene flow.
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影响因子：
64.8
作者：
Dasmahapatra, Kanchon K.;Walters, James R.;Briscoe, Adriana D.;Davey, John W.;Whibley, Annabel;Nadeau, Nicola J.;Zimin, Aleksey V.;Hughes, Daniel S. T.;Ferguson, Laura C.;Martin, Simon H.;Salazar, Camilo;Lewis, James J.;Adler, Sebastian;Ahn, Seung-Joon;Baker, Dean A.;Baxter, Simon W.;Chamberlain, Nicola L.;Chauhan, Ritika;Counterman, Brian A.;Dalmay, Tamas;Gilbert, Lawrence E.;Gordon, Karl;Heckel, David G.;Hines, Heather M.;Hoff, Katharina J.;Holland, Peter W. H.;Jacquin-Joly, Emmanuelle;Jiggins, Francis M.;Jones, Robert T.;Kapan, Durrell D.;Kersey, Paul;Lamas, Gerardo;Lawson, Daniel;Mapleson, Daniel;Maroja, Luana S.;Martin, Arnaud;Moxon, Simon;Palmer, William J.;Papa, Riccardo;Papanicolaou, Alexie;Pauchet, Yannick;Ray, David A.;Rosser, Neil;Salzberg, Steven L.;Supple, Megan A.;Surridge, Alison;Tenger-Trolander, Ayse;Vogel, Heiko;Wilkinson, Paul A.;Wilson, Derek;Yorke, James A.;Yuan, Furong;Balmuth, Alexi L.;Eland, Cathlene;Gharbi, Karim;Thomson, Marian;Gibbs, Richard A.;Han, Yi;Jayaseelan, Joy C.;Kovar, Christie;Mathew, Tittu;Muzny, Donna M.;Ongeri, Fiona;Pu, Ling-Ling;Qu, Jiaxin;Thornton, Rebecca L.;Worley, Kim C.;Wu, Yuan-Qing;Linares, Mauricio;Blaxter, Mark L.;Ffrench-Constant, Richard H.;Joron, Mathieu;Kronforst, Marcus R.;Mullen, Sean P.;Reed, Robert D.;Scherer, Steven E.;Richards, Stephen;Mallet, James;McMillan, W. Owen;Jiggins, Chris D.
通讯作者：
Jiggins, Chris D.
影响因子：
2.6
作者：
Feder, Alison F.;Pennings, Pleuni S.;Petrov, Dmitri A.
通讯作者：
Petrov, Dmitri A.
影响因子：
14.9
作者：
Bairoch, A;Apweiler, R
通讯作者：
Apweiler, R
影响因子：
2.6
作者：
Excoffier, Laurent;Laval, Guillaume;Schneider, Stefan
通讯作者：
Schneider, Stefan
DOI：
10.1098/rspb.2012.2146
发表时间：
2012-12-22
期刊：
Proceedings. Biological sciences
影响因子：
--
作者：
Conte GL;Arnegard ME;Peichel CL;Schluter D
通讯作者：
Schluter D