Resource elasticity of offspring survival and the optimal evolution of sex ratios.

Resource elasticity of offspring survival and the optimal evolution of sex ratios.
复制标题

子代生存的资源弹性与性别比的优化演化

DOI:
10.1371/journal.pone.0053904
复制
发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Li YT
Li YT
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Wang RW;Wang YQ;He JZ;Li YT

文献摘要

参考文献

被引文献

相似文献

任何生物体的适应性包括成年生物的存活率和繁殖率以及它们后代的存活率。环境选择压力可能不会对生物体的这两个方面产生同等影响。基于进化稳定策略理论的模型假设生物首先分配有限的资源以维持其在环境选择压力下的生存,令人惊讶地发现,环境压力强度和后代生存的生殖资源弹性对性比有很大的影响。此外,后代生存的资源弹性概念内在地整合了K选择和r选择的生态学概念。该模型表明,在一个物种的生殖策略K,增加环境选择压力将减少资源分配给男性的功能。相比之下,在具有生殖策略r的物种中,更严酷的环境选择压力将增加对雄性功能的分配。后代存活的弹性不仅在物种之间可能不同,而且在影响同一物种的许多其他因素之间也可能不同(例如,年龄结构,空间异质性),这解释了物种之间的性别比例差异或同一物种的年龄结构和空间异质性。
The fitness of any organisms includes the survival and reproductive rate of adults and the survival of their offspring. Environmental selection pressures might not affect these two aspects of an organism equally. Assuming that an organism first allocates its limited resources to maintain its survival under environmental selection pressure, our model, based on the evolutionarily stable strategy theory, surprisingly shows that the sex ratio is greatly affected by the environmental pressure intensity and by the reproductive resource elasticity of offspring survival. Moreover, the concept of the resource elasticity of offspring survival intrinsically integrates the ecological concepts of K selection and r selection. The model shows that in a species with reproductive strategy K, increased environmental selection pressure will reduce resource allocation to the male function. By contrast, in a species with reproductive strategy r, harsher environmental selection pressure will increase allocation to the male function. The elasticity of offspring survival might vary not only across species, but also across many other factors affecting the same species (e.g., age structure, spatial heterogeneity), which explains sex ratio differences across species or age structures and spatial heterogeneity in the same species.
DOI: 10.1086/303310
发表时间: 2000-02-01
影响因子: 2.9
作者:
Zhang, DY
通讯作者: Zhang, DY
DOI: 10.1006/jtbi.1996.0304
发表时间: 1997-03-21
影响因子: 2
作者:
Zhang, DY;Jiang, XH
通讯作者: Jiang, XH
DOI: 10.1530/jrf.0.0780587
发表时间: 1986-11-01
期刊: JOURNAL OF REPRODUCTION AND FERTILITY
影响因子: --
作者:
MEIKLE, DB;DRICKAMER, LC
通讯作者: DRICKAMER, LC
DOI: 10.2307/3565523
发表时间: 1987-03-01
期刊: OIKOS
影响因子: 3.4
作者:
NUR, N
通讯作者: NUR, N
DOI: 10.1086/285898
发表时间: 1996-06-01
影响因子: 2.9
作者:
Zhang, DY;Jiang, XH;Zhao, SL
通讯作者: Zhao, SL