Sex differences in the plasticity of life history in response to social environment

Sex differences in the plasticity of life history in response to social environment
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生活史可塑性对社会环境的性别差异

DOI:
10.1111/evo.14186
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发表时间:
2021
期刊:
影响因子:
3.3
通讯作者:
Hughes, Kimberly A.
Hughes, Kimberly A.
中科院分区:
环境科学与生态学2区
文献类型:
--
作者:
Lange, Elizabeth C.;Ptacek, Margaret B.;Travis, Joseph;Hughes, Kimberly A.

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预测社会环境如何影响生活史变异对于理解选择是否以及何时有利于替代生活史发展至关重要,特别是在社会互动随时间或空间而变化的系统中。虽然性选择理论预测,男性和女性应该在社会环境的变化作出不同的反应,很少有研究探讨了男性和女性的表型的反应,以相同的梯度的社会环境。在这项研究中,我们使用了一个livebearing鱼,以确定男性和女性如何改变他们的生活史,在社会环境的变化在发展过程中。我们发现,男性和女性延迟成熟,并获得更大的尺寸时,他们的社会环境包括成年人,在青少年的环境中发展相反。这种影响的程度在两性之间有很大差异。两性的共同反应模式表明,生活史的权衡,而不是性选择,是负责这些变化的生活史表达。这些效应使得基因型和表型之间的关系强烈依赖于每个个体所经历的环境。这些结果表明,社会环境是一个重要的驱动力,生活史的变化,在sailfin mollies,至少可以作为重要的非生物效应。
Predicting how social environment affects life history variation is critical to understanding if, and when, selection favors alternative life history development, especially in systems in which social interactions change over time or space. Although sexual selection theory predicts that males and females should respond differently to variation in the social environment, few studies have examined the responses of both male and female phenotypes to the same gradient of social environment. In this study, we used a livebearing fish to determine how males and females altered their life histories in response to variation in the social environment during development. We found that both males and females delayed maturity and attained larger sizes when their social environment included adults, in contrast to developing in juvenile-only environments. The magnitude of this effect differed substantially between the sexes. The common pattern of response in the sexes suggested that life history trade-offs, rather than sexual selection, is responsible for these changes in life history expression. These effects make the relationship between genotype and phenotype depend strongly on the environment experienced by each individual. These results indicate that social environment is an important driver of life history variation in sailfin mollies and can be at least as important as abiotic effects.
成年雄性和雌性小鼠的存在对幼鼠生长和发育的不同影响。
DOI: --
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