Disentangling Population History and Character Evolution among Hybridizing Lineages
Disentangling Population History and Character Evolution among Hybridizing Lineages
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解开杂交谱系中的人口历史和性状进化
DOI：
10.1093/molbev/msaa004
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发表时间：
2020
影响因子：
10.7
通讯作者：
Kronforst, Marcus R
中科院分区：
文献类型：
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作者：
Mullen, Sean P;VanKuren, Nicholas W;Zhang, Wei;Nallu, Sumitha;Kristiansen, Evan B;Wuyun, Qiqige;Liu, Kevin;Hill, Ryan I;Briscoe, Adriana D;Kronforst, Marcus R
理解适应性表型新奇性的起源和维持是进化生物学的中心目标。然而，杂交和不完全谱系分类都可能导致适应性性状基因组区域与基因组其余部分之间的谱系不一致，从而使有关性状进化的推断与种群历史脱钩。在这里，解开这些影响，我们研究了进化的起源和维护之间的北美海军上将蝴蝶（Limenitis arthemis）和他们的化学防御模型（Battus philenor）使用从头基因组测序，全基因组重测序，统计基因渗入映射。我们的研究结果表明，平衡选择，所产生的地理变异中存在或不存在的不好吃的模型，保持了两个深深不同的颜色图案单倍型，已被反复筛选之间的不同的模仿和nonmimetic谱系ofLimenitisvia渐渗杂交。
Understanding the origin and maintenance of adaptive phenotypic novelty is a central goal of evolutionary biology. However, both hybridization and incomplete lineage sorting can lead to genealogical discordance between the regions of the genome underlying adaptive traits and the remainder of the genome, decoupling inferences about character evolution from population history. Here, to disentangle these effects, we investigated the evolutionary origins and maintenance of Batesian mimicry between North American admiral butterflies (Limenitis arthemis) and their chemically defended model (Battus philenor) using a combination of de novo genome sequencing, whole-genome resequencing, and statistical introgression mapping. Our results suggest that balancing selection, arising from geographic variation in the presence or absence of the unpalatable model, has maintained two deeply divergent color patterning haplotypes that have been repeatedly sieved among distinct mimetic and nonmimetic lineages ofLimenitisvia introgressive hybridization.