Koteja P
Institute of Environmental Sciences, Jagiellonian University, Kraków, Poland.
Proc Biol Sci. 2000 Mar 7;267(1442):479-84. doi: 10.1098/rspb.2000.1025.
The question of the selection forces which initiated the evolution of endothermy in birds and mammals is one of the most intriguing in the evolutionary physiology of vertebrates. Many students regard the aerobic capacity model as the most plausible hypothesis. This paper presents an alternative model, in which the evolution of endothermy in birds and mammals was driven by two factors: (i) a selection for intense post-hatching parental care, particularly feeding offspring, and (ii) the high cost of maintaining the increased capacity of the visceral organs necessary to support high rates of total daily energy expenditures.
引发鸟类和哺乳动物恒温性进化的选择力问题,是脊椎动物进化生理学中最引人入胜的问题之一。许多学者认为有氧能力模型是最合理的假说。本文提出了另一种模型,即鸟类和哺乳动物恒温性的进化是由两个因素驱动的:(i)对孵化后强烈的亲代抚育的选择,特别是对后代的喂养;(ii)维持支持高每日总能量消耗率所需的内脏器官能力增加的高成本。