Effect of clutch size on male egg-fanning behavior and hatching success in the goby, Eviota prasina (Klunzinger)

摘要: Abstract In fish that exhibit paternal care, the females often choose their mates on basis of male traits are indicative parental ability males. a marine goby, Eviota prasina, males tend eggs within nests until hatching, and prefer have longer dorsal fins courtship behavior with higher frequency as mates. order to clarify relationship between these sexually selected E. factors affecting hatching success care were examined in an aquarium experiment. Females spawned clutch size showed high individual variation (range = 88–833 eggs). The positive correlation time spent by fanning size. contrast prediction, however, did not show significant traits, i.e., fin length displays. Moreover, multiple regression analysis indicated was most important factor survival rate eggs. influenced nests; occurred when they tended larger clutches. Males required invest greater effort egg-tending achieve receive clutches, probably due reward for behavior. Based mate choice, may obtain other benefits such quality offspring.