Charnov E L, Turner T F, Winemiller K O
Department of Biology, University of New Mexico, Albuquerque, NM 87131-1091, USA.
Proc Natl Acad Sci U S A. 2001 Jul 31;98(16):9460-4. doi: 10.1073/pnas.161294498.
A prominent feature of comparative life histories in fish (and other indeterminate growers) is the approximate invariance across species of certain dimensionless numbers made up from reproductive and timing variables. The two best known are the age at maturity (alpha) divided by the average adult lifespan (E), and the proportion of a body mass given to reproduction per year (c) multiplied by E. This article uses evolutionary life-history theory for nongrowing populations to predict the numeric value of these numbers for fish and lizards, with several new implications for the dynamics of ontogenetic development.
鱼类(以及其他非确定性生长者)比较生命史的一个显著特征是,由繁殖和时间变量组成的某些无量纲数在物种间大致不变。其中最广为人知的两个数是成熟年龄(α)除以成年个体的平均寿命(E),以及每年用于繁殖的体重比例(c)乘以E。本文运用非生长种群的进化生命史理论来预测鱼类和蜥蜴这些数的数值,并对个体发育动态有若干新的启示。