Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, 650223, Kunming, China.
Nat Commun. 2017 Nov 16;8(1):1550. doi: 10.1038/s41467-017-01800-0.
Highly aggressive Africanized honeybees (AHB) invaded Puerto Rico (PR) in 1994, displacing gentle European honeybees (EHB) in many locations. Gentle AHB (gAHB), unknown anywhere else in the world, subsequently evolved on the island within a few generations. Here we sequence whole genomes from gAHB and EHB populations, as well as a North American AHB population, a likely source of the founder AHB on PR. We show that gAHB retains high levels of genetic diversity after evolution of gentle behaviour, despite selection on standing variation. We observe multiple genomic loci with significant signatures of selection. Rapid evolution during colonization of novel habitats can generate major changes to characteristics such as morphological or colouration traits, usually controlled by one or more major genetic loci. Here we describe a soft selective sweep, acting at multiple loci across the genome, that occurred during, and may have mediated, the rapid evolution of a behavioural trait.
高度侵袭性的非洲化蜜蜂（AHB）于 1994 年入侵波多黎各（PR），在许多地方取代了温顺的欧洲蜜蜂（EHB）。温顺的 AHB（gAHB）在世界其他地方都没有，随后在岛上几代内进化而来。在这里，我们对 gAHB 和 EHB 种群以及北美的 AHB 种群进行了全基因组测序，北美的 AHB 种群可能是 PR 上创始 AHB 的来源。我们表明，gAHB 在温顺行为进化后保留了高水平的遗传多样性，尽管对现有变异进行了选择。我们观察到多个具有显著选择特征的基因组位点。在新栖息地的殖民化过程中，快速进化可以导致形态或颜色特征等特征发生重大变化，这些特征通常由一个或多个主要遗传基因座控制。在这里，我们描述了一个软选择清除，在整个基因组的多个基因座上发生，它发生在，并可能介导了行为特征的快速进化。
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