Intersexual and intrasexual selection, sneak copulation and male ornamentation in guppies (Poecilia reticulata)

摘要: To test the relative importance of female choice, sneak copulation and male dominance as determinants mating success in a feral guppy population, we conducted paired-male experiment using colour patterns progeny to score paternity. Sneak male-male aggression had no noticeable effect on success. Mating was strongly related frequency behavioural responses both displaying non-displaying males. Relative area orange colouration complexity were positively This substantiates observed preference for orange, strengthens claims that choice is integral Males trials which females failed produce offspring showed lower levels black pigmentation, suggesting threshold this ornament despite it not being correlated with variation or attractiveness measures. The implications these findings evolution multiple secondary sex traits guppies are discussed.