Fecundity is a primary components of fitness theory predicts that the evolution of fecundity through increased brood size result from fecundity selection favouring larger female size to accmmodate more offspring and to store more energy .this is expected to generate a symmetric selection on body size between the sexes ,ultimately driving evolution of female size to accommodate more offspring and to store more energy.this is expected to generate asymmetric selection on body size between the sexes ,ultimately driving evolution of female biased sexual size dimorphism .additionally it has been predicted that the intensity of fecundity selection increases when the opportunities for reproduction are reduced by the limiting thermal effect of increasing latitude - elevation on the length of the reproductive season .this factor would be particulary strong among the among ectotherms ,where reproduction is heavily temperture - dependent .however ,this intregative perspective on reproductive evolution by fecundity selection has rerely been investigated .here we employ a comparative approach to investigate these predictions in Liolaemus reproductive output increases predictably with increasing female size .however ,contrary to predictions ,we found that incresed fecundity does not translate into female biased SSD ,and that combined latiitude -evevation does not impose a detectable effect on fecundity .
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