Body Size, Physiological Time, and Longevity of Homeothermic Animals

摘要: The Concept of physiological time is extended from contributions Adolph, Hill, and Stahl to included a wider range events in the life histories mammals birds. durations physiological, developmental, ecological cycles show nearly parallel exponential relationships body size (masss1/4). Maximum span approximates fixed multiple shorter events, such as muscle-twitch time, circulation filtration blood plasma, respiratory metabolic cycles, embryonic development, growth, sexual maturation, even minimum population-doubling time. Endothermy evolved independently birds mammals, which share approximate M1/4 allometry although with different absolute values cycle times. Birds develop faster than similar-sized live longer, their slower hearts actually beat more before expiring. A time-scale proportional may be difficult synchronize environmental cycles. Thus, mouse experiences day'...