Sexual segregation in foraging of greater kudu (Tragelaphus strepsiceros) in a heterogeneous savanna, in Chobe National Park, Botswana
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Sexual segregation is common in ungulates and is generally related to differences in body size. Often males are larger than females, and the sexes live in separate groups outside the breeding season. I tested the season of sexual segregation in foraging of greater kudu (Tragelaphus strepsiceros) along the Chobe riverfront in relation to environmental heterogeneity on different scales. The study was conducted during the wet season from January to April 2010. The data were analyzed using Detrended Correspondence Analysis (DCA) in CANOCO for ordination and Analysis of variance (ANOVA in R program). Correspondence analyses results revealed that there was a clear separation of kudu females and males in nutrient rich habitats on alluvial and mixed soil while there was no clear pattern of segregation in the poor habitats on sandy soil. Statistical analyses results revealed that feeding patches for both females and males differed from control plots in food quality. For females there were significant differences in preference index between trees available and trees browsed. In males there was no significant difference between trees available and trees browsed. In females habitat use seemed to be influenced by predation risk.
Masteroppgave i anvendt økologi. Evenstad 2012