Sex Ratio Elasticity Influences the Selection of Sex Ratio Strategy.
Sex Ratio Elasticity Influences the Selection of Sex Ratio Strategy.
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性别比弹性影响性别比策略选择
DOI:
10.1038/srep39807
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发表时间:
2016-12-23
影响因子:
4.6
通讯作者:
Sam Ma Z
中科院分区:
文献类型:
--
作者:
Wang Y;Wang R;Li Y;Sam Ma Z
There are three sex ratio strategies (SRS) in nature—male-biased sex ratio, female-biased sex ratio and, equal sex ratio. It was R. A. Fisher who first explained why most species in nature display a sex ratio of ½. Consequent SRS theories such as Hamilton’s local mate competition (LMC) and Clark’s local resource competition (LRC) separately explained the observed deviations from the seemingly universal 1:1 ratio. However, to the best of our knowledge, there is not yet a unified theory that accounts for the mechanisms of the three SRS. Here, we introduce the price elasticity theory in economics to define sex ratio elasticity (SRE), and present an analytical model that derives three SRSs based on the following assumption: simultaneously existing competitions for both resources A and resources B influence the level of SRE in both sexes differently. Consequently, it is the difference (between two sexes) in the level of their sex ratio elasticity that leads to three different SRS. Our analytical results demonstrate that the elasticity-based model not only reveals a highly plausible mechanism that explains the evolution of SRS in nature, but also offers a novel framework for unifying two major classical theories (i.e., LMC & LRC) in the field of SRS research.
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影响因子:
2
作者:
Courteau, J;Lessard, S
通讯作者:
Lessard, S
影响因子:
1.4
作者:
Courteau, J;Lessard, S
通讯作者:
Lessard, S
影响因子:
2.9
作者:
Gardner, Andy;Ross, Laura
通讯作者:
Ross, Laura
影响因子:
64.8
作者:
BULMER, MG;TAYLOR, PD
通讯作者:
TAYLOR, PD
影响因子:
4.6
作者:
Kobayashi K;Hasegawa E
通讯作者:
Hasegawa E