Lek size variation and its consequences in the ochre-bellied flycatcher, Mionectes oleagineus

摘要: Several hypotheses suggest that the costs and benefits of display in aggregations different sizes play a major role both evolution leks distribution males across lekj sizes. We examined consequences variation lek size for females study ochre-bellied flycatcher, MiontcUs oltagmrus. observed 41 solitary sites leks, ranging from 1 to 5 mates, over S breeding seasons. Although mean visitation rate by was positively correlated with size, female per male remained constant The at which visited who had highest each as predicted hotshot hypothesis. Neither nor capita intrusion rates were size. For top-ranked male, however, there significant correlation between he displayed. Intrusion may be costly, 28% visits interrupted intruders. Solitary mates suffered no such interference. Females show preferences larger visiting mating well leks. However, preferentially visit high singing rates, this trait determine patterns. Our data argue are not important lekking specie*, do they affect Instead, accordance predictions hot-spot models. These processes operating simultaneously spedes.