Disentangling the causes of temporal variation in the opportunity for sexual selection.
Disentangling the causes of temporal variation in the opportunity for sexual selection.
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DOI：
10.1038/s41467-023-36536-7
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发表时间：
2023-02-22
影响因子：
16.6
通讯作者：
McDonald, Grant C.
中科院分区：
文献类型：
--
作者：
Carleial, Romulo;Pizzari, Tommaso;Richardson, David S.;McDonald, Grant C.
原则上，性选择潜力的时间波动可以估计为生殖成功（即选择机会）的性内方差的变化。然而，我们对机会测度如何随时间变化以及这种动态受随机性影响的程度知之甚少。我们使用已公布的交配数据，从多个物种调查的时间变化的性选择的机会。首先，我们表明，在连续几天的两性和较短的采样周期导致大量高估的precopulatory性选择的机会通常下降。其次，通过利用随机零模型，我们还发现，这些动态在很大程度上解释了随机交配的积累，但内部的性竞争可能会减缓时间的下降。第三，使用的数据从一个红色junglefowl（原鸡）的人口，我们表明，在繁殖期的precopulatory措施的下降反映了交配后和总的性选择的机会下降。总的来说，我们表明，方差为基础的指标的选择变化迅速，采样持续时间高度敏感，并可能导致大量的误解，如果用作性选择的指标。然而，模拟可以开始解开随机变化的生物机制。性选择的机会是一个关键的进化参数，但我们对它的时间动态知之甚少。使用来自多个动物物种的数据，作者表明，这个指标随着时间的推移而迅速变化，应该使用模拟来避免实质性的误解。
In principle, temporal fluctuations in the potential for sexual selection can be estimated as changes in intrasexual variance in reproductive success (i.e. the opportunity for selection). However, we know little about how opportunity measures vary over time, and the extent to which such dynamics are affected by stochasticity. We use published mating data from multiple species to investigate temporal variation in the opportunity for sexual selection. First, we show that the opportunity for precopulatory sexual selection typically declines over successive days in both sexes and shorter sampling periods lead to substantial overestimates. Second, by utilising randomised null models, we also find that these dynamics are largely explained by an accumulation of random matings, but that intrasexual competition may slow temporal declines. Third, using data from a red junglefowl (Gallus gallus) population, we show that declines in precopulatory measures over a breeding period were mirrored by declines in the opportunity for both postcopulatory and total sexual selection. Collectively, we show that variance-based metrics of selection change rapidly, are highly sensitive to sampling durations, and likely lead to substantial misinterpretation if used as indicators of sexual selection. However, simulations can begin to disentangle stochastic variation from biological mechanisms. The opportunity for sexual selection is a key evolutionary parameter but we know little about its temporal dynamics. Using data from multiple animal species the authors show that this metric varies rapidly through time and that simulations should be used to avoid substantial misinterpretation.
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DOI：
10.1098/rspb.2013.2973
发表时间：
2014-05-07
期刊：
Proceedings. Biological sciences
影响因子：
--
作者：
Collet JM;Dean RF;Worley K;Richardson DS;Pizzari T
通讯作者：
Pizzari T
影响因子：
2.1
作者：
Fedina, T. Y.;Lewis, S. M.
通讯作者：
Lewis, S. M.
影响因子：
2.8
作者：
BRUNTON, DH
通讯作者：
BRUNTON, DH
影响因子：
2.4
作者：
Clark, DC;DeBano, SJ;Moore, AJ
通讯作者：
Moore, AJ
影响因子：
56.9
作者：
Chaine, Alexis S.;Lyon, Bruce E.
通讯作者：
Lyon, Bruce E.