Demography, altruism, and the benefits of budding
Demography, altruism, and the benefits of budding
复制标题
DOI：
10.1111/j.1420-9101.2006.01104.x
复制
发表时间：
2006-09-01
影响因子：
2.1
通讯作者：
West, S. A.
中科院分区：
文献类型：
--
作者：
Gardner, A.;West, S. A.
现在人们普遍认识到，亲属之间的竞争抑制了利他主义的进化。在标准的群体遗传学模型中，对社会伙伴的不分青红皂白的利他主义很难得到青睐。原因是，虽然有限的分散增加了社会伙伴的亲属关系，但也加剧了地方竞争。一个很少受到关注的解决方案是，如果个体作为群体分散（萌芽分散），因为这放松了当地的竞争，而不会减少亲属关系。萌芽行为广泛存在于生物组织的各个层次，从早期的原始细胞生命到协作繁殖的脊椎动物。我们建立了个体扩散、萌芽扩散、软选择和硬选择的模型，以研究利他主义的有利条件。更一般地说，我们研究这些不同的人口统计学的细节如何饲料的相关性和规模的竞争参数，可以包括到汉密尔顿的规则。
It is now widely appreciated that competition between kin inhibits the evolution of altruism. In standard population genetics models, it is difficult for indiscriminate altruism towards social partners to be favoured at all. The reason is that while limited dispersal increases the kinship of social partners it also intensifies local competition. One solution that has received very little attention is if individuals disperse as groups (budding dispersal), as this relaxes local competition without reducing kinship. Budding behaviour is widespread through all levels of biological organization, from early protocellular life to cooperatively breeding vertebrates. We model the effects of individual dispersal, budding dispersal, soft selection and hard selection to examine the conditions under which altruism is favoured. More generally, we examine how these various demographic details feed into relatedness and scale of competition parameters that can be included into Hamilton's rule.