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
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Li YT
中科院分区:
文献类型:
--
作者:
Wang RW;Wang YQ;He JZ;Li YT
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.
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影响因子:
2.9
作者:
Zhang, DY
通讯作者:
Zhang, DY
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
影响因子:
3.4
作者:
NUR, N
通讯作者:
NUR, N
影响因子:
2.9
作者:
Zhang, DY;Jiang, XH;Zhao, SL
通讯作者:
Zhao, SL