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
期刊:
影响因子:
4.6
通讯作者:
Sam Ma Z
Sam Ma Z
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Wang Y;Wang R;Li Y;Sam Ma Z

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自然界中存在三种性别比例策略:偏向男性的性别比例、偏向女性的性别比例和均等的性别比例。是R。A.他首先解释了为什么自然界中大多数物种的性别比例为1/2。相关的SRS理论,如汉密尔顿的本地配偶竞争(LMC)和克拉克的本地资源竞争(LRC)分别解释了观察到的偏离似乎普遍的1:1比例。然而,据我们所知,目前还没有一个统一的理论来解释这三种SRS的机制。本文引入经济学中的价格弹性理论,定义了性别比弹性(SRE),并提出了一个分析模型,该模型基于以下假设推导出三种SRE:同时存在对资源A和资源B的竞争,对两性SRE水平的影响不同。因此,正是性别比例弹性水平的差异导致了三种不同的SRS。我们的分析结果表明,基于弹性的模型不仅揭示了一个高度合理的机制,解释了自然界中SRS的演变,而且还提供了一个新的框架,统一了两个主要的经典理论(即,LMC & LRC)在SRS研究领域的应用。
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.
DOI: 10.1006/jtbi.2000.2160
发表时间: 2000-11-21
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作者:
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通讯作者: Lessard, S
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发表时间: 1999-04-01
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发表时间: 1980-01-01
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通讯作者: TAYLOR, PD
DOI: 10.1038/srep23982
发表时间: 2016-04-01
期刊: Scientific reports
影响因子: 4.6
作者:
Kobayashi K;Hasegawa E
通讯作者: Hasegawa E