Brain-Tissue Accumulation of Fluorescent Age Pigments in Four Poeciliid Fishes (Cyprinodontiformes) and the Estimation of 'biological Age'

摘要

The concept of an intrinsic "biological age" or physiological age" is very important in com- parative ecological and evolutionary studies, but its implementation has been problematic. Although many authors have discussed the importance of in- trinsic measures of age over the past 75 years, only Reiss (1989) has proposed an operational definition In terms of cumulative metabolism; however, Reiss' Measure cannot be easily applied to assessing the Age of individual organisms.