Andrews - p. 3 
Age at maturity differs considerably between the relatively slow-growing 
island species and the relatively fast-growing mainland species, 5-9 months 
as opposed to 3-4 months. Andrews interprets this as an indication that, as 
a group, island anoles are relatively K-selected as compared with their 
mainland counterparts, 
There is wide individual variation in growth rate in anoles, presumably 
with both genetic and nutritional components. Andrews predicts that the 
genetic component is greatest in unpredictable environments where populations 
are limited by density independent factors and least where populations are 
limited by density dependent factors. 
An interesting point is that there is in Anolis a relatively long 
period between sexual maturity and maximum size; it may in fact equal or 
exceed the period between hatching and sexual maturity. Andrews calls 
attention to the probability that, as long as energy is put into growth, 
reproductive effort must be somewhat lowered and that maximal reproductive 
effort may be possible only as size approaches an asymptote. On the other 
hand, benefits are accrued by attaining sizes larger than those at which 
reproduction is first possible. Large size is selectively advantageous if 
it is related to greater survivorship, enhances ability to obtain resources, 
or if reproductive effort is positively correlated with size. Hence, 
optimally, each individual lizard may have anr-oriented strategy when young 
and K-selected strategy when old. In other words, in a single population 
lizards may be able to reap the benefits of both early maturity and, for 
those that survive, the benefits of greater reproductive effort associated 
with relatively large size. 
