Environmental quality alters female costs and benefits of evolving under enforced monogamy.
Environmental quality alters female costs and benefits of evolving under enforced monogamy.
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DOI：
10.1186/1471-2148-14-21
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发表时间：
2014-02-05
影响因子：
3.4
通讯作者：
Martin OY
中科院分区：
文献类型：
--
作者：
Grazer VM;Demont M;Michalczyk Ł;Gage MJ;Martin OY
目前，许多生境因环境变化而遭受质量损失。因此，进化轨迹可能会因环境影响而发生变化，并可能增加常驻种群的灭绝风险。然而，环境变化很少被纳入性选择和性冲突的研究，虽然当地环境和个人的条件无疑会影响成本和收益。在这里，我们利用一妻多夫和一夫一妻制的选择线的面粉甲虫，在存在或不存在性选择的39代进化。我们专门研究了低与标准的食物质量（即压力与良性环境）的影响，从对比女性和男性的选择历史，以评估性别影响驾驶健身甲虫之间的交叉对的繁殖成功。我们发现了一个明确的交互作用的食物质量，男性选择历史和女性选择历史。一夫一妻制的女性通常表现得比一妻多夫的同行更差，但生殖成功塑造了他们的配偶和环境质量的选择历史。当一夫一妻制的女性与一妻多夫的男性在标准的良性环境中配对时，女性似乎会产生成本，可能是由于性冲突。相比之下，在新的压力环境中，一夫一妻制的女性从与一妻多夫的男性交配中获利，这表明性选择的好处大于成本。我们的研究结果表明，环境质量可以深刻地改变两性性选择适应的成本和收益。关于了解环境变化可能产生的影响，我们的研究结果进一步表明，交配系统的生态和相关的选择压力，应考虑更详细。
Currently many habitats suffer from quality loss due to environmental change. As a consequence, evolutionary trajectories might shift due to environmental effects and potentially increase extinction risk of resident populations. Nevertheless, environmental variation has rarely been incorporated in studies of sexual selection and sexual conflict, although local environments and individuals’ condition undoubtedly influence costs and benefits. Here, we utilise polyandrous and monogamous selection lines of flour beetles, which evolved in presence or absence of sexual selection for 39 generations. We specifically investigated effects of low vs. standard food quality (i.e. stressful vs. benign environments) on reproductive success of cross pairs between beetles from the contrasting female and male selection histories to assess gender effects driving fitness. We found a clear interaction of food quality, male selection history and female selection history. Monogamous females generally performed more poorly than polyandrous counterparts, but reproductive success was shaped by selection history of their mates and environmental quality. When monogamous females were paired with polyandrous males in the standard benign environment, females seemed to incur costs, possibly due to sexual conflict. In contrast, in the novel stressful environment, monogamous females profited from mating with polyandrous males, indicating benefits of sexual selection outweigh costs. Our findings suggest that costs and benefits of sexually selected adaptations in both sexes can be profoundly altered by environmental quality. With regard to understanding possible impacts of environmental change, our results further show that the ecology of mating systems and associated selection pressures should be considered in greater detail.
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影响因子：
9.2
作者：
Hosken, DJ;Garner, TWJ;Ward, PI
通讯作者：
Ward, PI
影响因子：
2.1
作者：
Candolin, U.;Salesto, T.;Evers, M.
通讯作者：
Evers, M.
影响因子：
5.9
作者：
Bhattacharya, M;Primack, RB;Gerwein, J
通讯作者：
Gerwein, J
影响因子：
3.3
作者：
Fricke, Claudia;Perry, Jen;Rowe, Locke
通讯作者：
Rowe, Locke
影响因子：
4.9
作者：
Keller, I;Nentwig, W;Largiadèr, CR
通讯作者：
Largiadèr, CR