Mate choice and sexual conflict in Brachionus plicatilis (Rotifera)

摘要: Male mate choice in Brachionus plicatilis is based on information from coronal receptors and contact chemoreception of a glycoprotein signal the body surface females. mating behavior modulated by quality strength, which determines male persistence circling intensity. We probe sensory abilities males better resolving their discrimination female age. Males preferentially initiate with young females, but not too young. circle 0.2 h old females just hatched resting eggs only about 1/2 as frequently 12 h are even more discriminating whom they copulate, preferring 3 h significantly than or 6 h In contrast, cannot distinguish between virgin those who have already copulated. Similarly, circled copulated hatching equal frequency amictic eggs. The counterpoint to resistance mating. When respond one four behaviors: no response, acceleration, foot flipping, retraction. 65% male–female encounters, there was initial response However, when began accelerated 11.1 times often were absent. second type evasive foot-flipping, tends knock off attempting female. presence males, performed foot-flipping three absence males. Coronal retraction, where stop swimming withdraw corona, observed less acceleration difference These data interpreted context sexual conflict, behaviors that optimize fitness differ.