期刊
AMERICAN NATURALIST
卷 155, 期 3, 页码 326-334出版社
UNIV CHICAGO PRESS
DOI: 10.1086/303323
关键词
parental cars; endothermy; thermogenesis
Birds and mammals share a number of features that are remarkably similar but that have evolved independently. One of these characters, endothermy has been suggested to have played a cardinal role in avian and mammalian evolution. I hypothesize that it is parental care, rather than endothermy, that is the key to understanding the amazing convergence between mammals and birds. Endothermy may have arisen as a consequence of selection for parental care because endothermy enables a parent to control incubation temperature. The remarkable ability of many birds and mammals to sustain vigorous exercise may also have arisen as a consequence of selection for parental care because provisioning of offspring often requires sustained vigorous exercise. Because extensive parental care encompasses a wide range of behaviors, morphology, and physiology it may be a key innovation that accounts for the majority of convergent avian and mammalian characters.
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