Local mate competition with variable fecundity:dependence of offspring sex ratios on information utilization and mode of male production.
Local mate competition with variable fecundity:dependence of offspring sex ratios on information utilization and mode of male production.
复制标题
具有可变繁殖力的局部配偶竞争：后代性别比对信息利用和雄性生产方式的依赖性。
DOI：
10.1093/beheco/1.1.68
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发表时间：
1990
影响因子：
2.4
通讯作者：
J. Seger
中科院分区：
文献类型：
--
作者：
J. Stubblefield;J. Seger
大多数本地配偶竞争模型假设为本地交配群体（“补丁”）贡献后代的foundresses都具有相同的繁殖力。Frank（1985，1987 a，B）、Herre（1985）和Yamaguchi（1985）考虑了生育力可变的模型，在这些模型中，founddresses根据斑块中其他founddresses的生育力来调整其性别分配。在这里，我们概括和扩展这些模型，包括女性可以响应自己的生殖力，但不是彼此的情况下（可能是因为他们必须确定自己的性别分配之前，他们到达补丁）和兄弟姐妹避免交配的情况下。进化稳定的性别分配表型是通过包容性适应度和群体遗传方法得到的。每个模型都解决了单倍体，二倍体，和haplodiploid遗传系统与双亲和雌雄同体模式的男性生产。在允许同胞交配的模型中，双亲遗传系统有一个进化稳定策略（ESS），而双亲系统有另一个进化稳定策略，但在这两类系统中，所有三个倍性都有相同的ESS。在雌性只对自己的生殖力作出反应的情况下，它们的育雏性别比随着育雏规模的增加而下降，但它们对雄性的绝对投资增加;即使在平均斑块大小非常大并且因此亲本投资的平均性别比与一半难以区分的情况下，也会发生这种反应。在许多种空间结构的种群中，性别分配的模式可能严重依赖于雌性对环境特征的感知和反应方式，这些环境特征预测了其当地交配聚集体的适合度分布。
Most models of local mate competition assume that the foundresses contributing offspring to a local mating group (‘patch’) all have the same fecundity. Frank (1985, 1987a, b), Herre (1985), and Yamaguchi (1985) consider models with variable fecundity, in which foundresses adjust their sex allocations in response to the fecundities of the other foundresses in the patch. Here we generalize and extend these models to include cases in which females can respond to their own fecundities but not to each other's (possibly because they must determine their sex allocations before they arrive at the patch) and cases in which siblings avoid mating with each other. Evolutionarily stable sex-allocation phenotypes are derived through both inclusive-fitness and population-genetic approaches. Each model is solved for haploid, diploid, and haplodiploid genetic systems with biparental and arrhenotokous modes of male production. In models that allow sibmating, the biparental genetic systems have one evolutionarily stable strategy (ESS) and the arrhenotokous systems have another, but within each of these categories, all three ploidys have the same ESS. Where females can respond only to their own fecundities, their brood sex Tratios decline with increasing brood size, but their absolute investments in males increase; this response occurs even where the mean patch size is very large and the mean sex ratio of parental investment is therefore indistinguishable from one-half. Patterns of sex allocation in many kinds of spatially structured populations may depend critically on the ways in which females perceive and respond to environmental features that predict the fitness distributions of their local mating aggregations.