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- W2083669692 abstract "For lek-breeding in ungulate populations to continue, benefits to males defending lek territories and to females visiting leks must outweigh the costs. In this study, Kafue lechwe males on leks gained higher mating rates than nonlekking males, a result of sexually receptive females leaving herds and aggregating on leks. When the numbers of females on leks were experimentally reduced, benefits to males decreased, resulting in males gradually abandoning lek territories. A comparison with a population of nonlekking, resource-defending black lechwe showed that mating attempts by estrous females in herds were disrupted by harassing males eight times more frequently in a population of lek-breeding Kafue lechwe than in the nonlekking black lechwe. Despite the fact that there were fewer Kafue lechwe females on single territories, harassment of estrous females by males was greater on single territories of Kafue lechwe than on leks and greater than on black lechwe resource territories. Females were also absent on Kafue lechwe single territories for long periods because of erratic, widespread movements of compact herds resulting from unpredictable distributions of resources. In contrast, black lechwe females were more evenly dispersed over homogeneous resources and for a given territory, females were likely to be present most of the time. Therefore, unlike black lechwe, male Kafue lechwe find it uneconomical to defend resource territories. Thus, costs to estrous females mating off leks and the absence of benefits to males attempting to defend resource-based territories may be important cofactors in the appearance of lek-breeding in some ungulate populations" @default.
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- W2083669692 date "1997-01-01" @default.
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- W2083669692 title "Lekking, resource defense, and harassment in two subspecies of lechwe antelope" @default.
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- W2083669692 doi "https://doi.org/10.1093/beheco/8.1.1" @default.
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