No female mate choice in Mallee dragon lizards, Ctenophorus fordi

摘要: Aspects of sexual selection were studied in a sexually monomorphic Australian agamid lizard (Ctenophorus fordi), particular with respect to the sensory exploitation hypothesis. In enclosure trials, females offered choice between ‘large’ vs. ‘small’ males and, different experiment, ‘blue’ ‘normal’ head color. The rationale for these experiments was: firstly, establish if actively solicit copulations; secondly, so, do copulations non-randomly male size (because large may have access food resources); thirdly, coloration is manipulated match traits congeneric, conspicuous and dimorphic species, show preference this novel trait (in accordance hypothesis). corresponding manipulations also made free-living population where distribution on home ranges color-manipulated monitored. Blue-headed accepted as mating partners both staged trials natural population. Females appeared not express any kind active or passive mate (rejection); only one out 62 did female approach herself rather than being approached by male(s). There was no discrimination against category regardless color within female's receptive period manipulation result spatial re-distribution females. Thus, appears unselectively her period. Rejection behaviors used outside communicate, all males, that receptive.