A MODEL FOR EVOLUTION OF PINNIPED POLYGYNY
A MODEL FOR EVOLUTION OF PINNIPED POLYGYNY
复制标题
DOI：
10.1111/j.1558-5646.1970.tb01790.x
复制
发表时间：
1970-01-01
期刊：
影响因子：
3.3
通讯作者：
BARTHOLOMEW, GA
中科院分区：
文献类型：
--
作者：
BARTHOLOMEW, GA
本文提出：(1)鳍状多配偶制的进化可以作为一个复杂的适应套件的组成部分来研究，包括生理学、形态学、生态学和分布，这与两栖生活模式有关；(2)在这种行为进化中进化的选择因素可以通过分析繁殖结构每年在繁殖地重新建立和维持的过程来确定。陆地分娩和近海海洋喂养似乎是鳍足类动物主要适应特征的关键决定因素，而且还与大多数哺乳动物的共同特征相互作用，从而有利于一夫多妻制和两性二态性。本文提出了一个模型，从鳍足动物特有的陆地分娩和近海取食开始，推导出一系列典型的一夫多妻鳍足动物的功能，并将这些功能与大多数哺乳动物的共同特征联系起来，并指出了主要的反馈回路，这些反馈回路选择性地推动了一夫多妻繁殖系统的进化。关键的角色被分配到合群和男性排斥。评估了大尺寸，脂肪沉积，两性异形，女性生殖模式和个体发育的作用。
It is proposed (1) that the evolution of pinniped polygyny can profitably be examined as an integral part of a complex adaptive suite including physiology, morphology, ecology, and distribution which has involved in relation to an amphibious mode of life, and (2) that the selective factors evolved in this behavioral evolution can be identified by analysis of the processes by which the breeding structure is annually re-established and maintained in the rookeries. Terrestrial parturition and offshore marine feeding appear to have been key determinants of the major adaptive features of pinnipeds, and also to have interacted with characteristics common to most mammals in such a way as to favor both polygyny and sexual dimorphism. A model is presented that starts with terrestrial parturition and offshore marine feeding, which together are unique to pinnipeds, derives from them a series of functions typical of polygynous pinnipeds, relates these to characteristics common to most mammals, and indicates the major feedback loops which have given selective impetus to the evolution of the polygynous breeding system. Key roles are assigned to gregariousness, and male exclusion. The roles of large size, fat deposits, sexual dimorphism, female reproductive patterns, and ontogenetic development are evaluated.