The evolution of ungulate leks

摘要: Abstract Abstract. Unlike explanations of other forms mammalian polygyny, most leks assume that females visit clustered mating territories to compare and select partners this has led the defence grouped by males. It is suggested here that, in lek-breeding ungulates, on may have benefits both sexes. Lekking occurs species where typically live large, unstable groups males cannot effectively defend female or clumped resources congregate. Under these conditions, oestrus leave their usual herds avoid dangerous harassment prefer solitary ones because they offer greater safety from predation. Where mate small do not contain significant resources, are likely benefit holding attract retain receptive more than territories.