Demographic causes of adult sex ratio variation and their consequences for parental cooperation.
Demographic causes of adult sex ratio variation and their consequences for parental cooperation.
复制标题
DOI：
10.1038/s41467-018-03833-5
复制
发表时间：
2018-04-25
影响因子：
16.6
通讯作者：
Krüger O
中科院分区：
文献类型：
--
作者：
Eberhart-Phillips LJ;Küpper C;Carmona-Isunza MC;Vincze O;Zefania S;Cruz-López M;Kosztolányi A;Miller TEX;Barta Z;Cuthill IC;Burke T;Székely T;Hoffman JI;Krüger O
成人性别比（ASR）是种群生物学、性选择和社会进化中的一个基本概念。然而，目前尚不清楚哪些人口统计过程会产生ASR变异，以及ASR偏见如何反过来影响社会行为。在这里，我们利用来自6个具有灵活亲代策略的野生滨鸟种群的6119只个体的详细生存、繁殖力和行为数据，评估了形成ASR的人口统计学机制及其对亲代合作的潜在影响。研究表明，尽管有着相似的生态环境和生活史，但这些密切相关的种群表达出截然不同的ASR，而ASR的变化在很大程度上是由幼崽明显生存的性别差异驱动的。此外，在有偏见的asr人群中，家庭主要由单亲抚养，这表明父母的合作随着性别比例的不平衡而破裂。综上所述，我们的研究结果表明，在生命早期出现的性别偏见对社会行为有着深远的影响。成人性别比（ASR）的偏差很常见，但其原因和后果尚未得到很好的理解。在这里，作者分析了来自5种滨鸟物种的bb6000个个体的数据，表明幼鸟生存的性别差异驱动了ASR的变化，而偏倚的ASR与单亲照料有关。
The adult sex ratio (ASR) is a fundamental concept in population biology, sexual selection, and social evolution. However, it remains unclear which demographic processes generate ASR variation and how biases in ASR in turn affect social behaviour. Here, we evaluate the demographic mechanisms shaping ASR and their potential consequences for parental cooperation using detailed survival, fecundity, and behavioural data on 6119 individuals from six wild shorebird populations exhibiting flexible parental strategies. We show that these closely related populations express strikingly different ASRs, despite having similar ecologies and life histories, and that ASR variation is largely driven by sex differences in the apparent survival of juveniles. Furthermore, families in populations with biased ASRs were predominantly tended by a single parent, suggesting that parental cooperation breaks down with unbalanced sex ratios. Taken together, our results indicate that sex biases emerging during early life have profound consequences for social behaviour. Biases in adult sex ratio (ASR) are common, yet their causes and consequences are not well understood. Here, the authors analyse data from >6000 individuals of five shorebird species, showing that sex differences in juvenile survival drive ASR variation and biased ASR is associated with uniparental care.
登录
查看更多内容
DOI：
10.1098/rstb.2016.0325
发表时间：
2017-09-19
影响因子：
6.3
作者：
Bokony, Veronika;Kover, Szilvia;Szekely, Tamas
通讯作者：
Szekely, Tamas
影响因子：
16.6
作者：
Fromhage, Lutz;Jennions, Michael D.
通讯作者：
Jennions, Michael D.
影响因子：
2.4
作者：
Carmona-Isunza, Maria Cristina;Ancona, Sergio;Kuepper, Clemens
通讯作者：
Kuepper, Clemens
影响因子：
4.9
作者：
Kuepper, Clemens;Edwards, Scott V.;Szekely, Tamas
通讯作者：
Szekely, Tamas
影响因子：
64.8
作者：
Kanfi, Yariv;Naiman, Shoshana;Cohen, Haim Y.
通讯作者：
Cohen, Haim Y.