Intralocus conflicts associated with a supergene.
Intralocus conflicts associated with a supergene.
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DOI：
10.1038/s41467-022-29033-w
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发表时间：
2022-03-16
影响因子：
16.6
通讯作者：
Küpper C
中科院分区：
文献类型：
--
作者：
Giraldo-Deck LM;Loveland JL;Goymann W;Tschirren B;Burke T;Kempenaers B;Lank DB;Küpper C
染色体倒位通常是主要表型变异的基础，由两性内部和两性之间的不同选择维持。在这里，我们研究了斑内冲突是否以及如何有助于平衡选择，稳定斑鼻毛猴的常染色体倒位多态性。在这种渗漏的滨鸟中，三种雄性交配变种（独立型、卫星型和觅食型）是由一个基于反转的超基因控制的。我们的研究表明，在圈养种群中，体型较小且倒置单倍型未经历重组的费德雌虫在产蛋率、卵大小和后代存活率方面的平均繁殖成功率低于缺乏倒置的独立雌虫。卫星雌性携带重组的倒置单倍型，体型中等，在繁殖性能上与独立雌性比费德雌性更接近。我们推断，雌性费德的低繁殖产出很可能与雄性费德个体高于平均水平的繁殖成功率相平衡。这些发现表明，斑内冲突可能在超基因变异的进化和维持中发挥重要作用。“导致雄性交配表型变异的一个超基因会影响雌性的繁殖。”在这里，作者使用进化模型来表明，这种超级基因最罕见的变体是由不成比例的高男性繁殖成功率维持的。”
Chromosomal inversions frequently underlie major phenotypic variation maintained by divergent selection within and between sexes. Here we examine whether and how intralocus conflicts contribute to balancing selection stabilizing an autosomal inversion polymorphism in the ruff Calidris pugnax. In this lekking shorebird, three male mating morphs (Independents, Satellites and Faeders) are controlled by an inversion-based supergene. We show that in a captive population, Faeder females, who are smaller and whose inversion haplotype has not undergone recombination, have lower average reproductive success in terms of laying rate, egg size, and offspring survival than Independent females, who lack the inversion. Satellite females, who carry a recombined inversion haplotype and have intermediate body size, more closely resemble Independent than Faeder females in reproductive performance. We inferred that the lower reproductive output of Faeder females is most likely balanced by higher than average reproductive success of individual Faeder males. These findings suggest that intralocus conflicts may play a major role in the evolution and maintenance of supergene variants. ‘A supergene that underlies variation in male mating phenotypes has consequences for female reproduction. Here, the authors use evolutionary models to show that the rarest variant of this supergene is maintained by disproportionally high male reproductive success.’
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影响因子：
5
作者：
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通讯作者：
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影响因子：
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实验群体的全基因组重测序揭示了果蝇卵大小变异的多基因基础。
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