Lineages evolved under stronger sexual selection show superior ability to invade conspecific competitor populations.
Lineages evolved under stronger sexual selection show superior ability to invade conspecific competitor populations.
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DOI：
10.1002/evl3.80
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发表时间：
2018-10
影响因子：
5
通讯作者：
Gage MJG
中科院分区：
文献类型：
--
作者：
Godwin JL;Spurgin LG;Michalczyk Ł;Martin OY;Lumley AJ;Chapman T;Gage MJG
尽管后代生产的限制，几乎所有的多细胞物种使用性繁殖。性导致了性选择，这是一种通过竞争和选择在生殖中发挥作用的广泛力量，然而，目前还不清楚性选择是否有利于总的谱系适应性，或者它是否起到了限制作用。性选择可能是一种积极的力量，因为选择改善了个体状况，清除了突变负荷，总结成具有上级适应性的谱系。另一方面，性选择可能会通过性冲突的行为，或者因为性选择和自然选择特征之间的紧张关系，否定潜在的净适应性。在这里，我们探索这些想法，使用多代入侵的挑战，以衡量性选择的后果的整体净健身的血统。应用实验进化强与弱的制度下的性选择77代面粉甲虫赤拟谷盗后，我们测量了整体能力的引进，无论是政权入侵到同种竞争对手的人口跨越8代。结果表明，来自强性选择背景的种群具有上级净适合度，比来自弱性选择背景的种群入侵更迅速、更彻底。尽管在入侵实验开始时只占每个群体的10%，但来自强性选择历史的殖民最终实现了几乎完全的基因渗入，几乎完全消除了最初的竞争基因型。种群遗传模拟使用我们的实验的设计和参数表明，这种入侵优势可以解释，如果强大的性选择提高了少年和成年健身，在两性。使用经验和建模方法相结合，我们的研究结果因此揭示了当面临跨多代入侵竞争对手种群的广泛挑战时，性选择对净种群适应度的积极和广泛影响。
Despite limitations on offspring production, almost all multicellular species use sex to reproduce. Sex gives rise to sexual selection, a widespread force operating through competition and choice within reproduction, however, it remains unclear whether sexual selection is beneficial for total lineage fitness, or if it acts as a constraint. Sexual selection could be a positive force because of selection on improved individual condition and purging of mutation load, summing into lineages with superior fitness. On the other hand, sexual selection could negate potential net fitness through the actions of sexual conflict, or because of tensions between investment in sexually selected and naturally selected traits. Here, we explore these ideas using a multigenerational invasion challenge to measure consequences of sexual selection for the overall net fitness of a lineage. After applying experimental evolution under strong versus weak regimes of sexual selection for 77 generations with the flour beetle Tribolium castaneum, we measured the overall ability of introductions from either regime to invade into conspecific competitor populations across eight generations. Results showed that populations from stronger sexual selection backgrounds had superior net fitness, invading more rapidly and completely than counterparts from weak sexual selection backgrounds. Despite comprising only 10% of each population at the start of the invasion experiment, colonizations from strong sexual selection histories eventually achieved near‐total introgression, almost completely eliminating the original competitor genotype. Population genetic simulations using the design and parameters of our experiment indicate that this invasion superiority could be explained if strong sexual selection had improved both juvenile and adult fitness, in both sexes. Using a combination of empirical and modeling approaches, our findings therefore reveal positive and wide‐reaching impacts of sexual selection for net population fitness when facing the broad challenge of invading competitor populations across multiple generations.
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影响因子：
3.3
作者：
Allen, Scott L.;McGuigan, Katrina;Chenoweth, Stephen F.
通讯作者：
Chenoweth, Stephen F.
影响因子：
9.2
作者：
Chenoweth, Stephen F.;Appleton, Nicholas C.;Rundle, Howard D.
通讯作者：
Rundle, Howard D.
影响因子：
3.3
作者：
Arbuthnott, Devin;Rundle, Howard D.
通讯作者：
Rundle, Howard D.
影响因子：
3.1
作者：
CHARLESWORTH, D;MORGAN, MT;CHARLESWORTH, B
通讯作者：
CHARLESWORTH, B
DOI：
10.1098/rspb.2009.2026
发表时间：
2010-05-07
影响因子：
4.7
作者：
Arnqvist, Goran;Tuda, Midori
通讯作者：
Tuda, Midori