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Author |
White, A.M.; Swaisgood, R.R.; Czekala, N. |
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Title |
Ranging patterns in white rhinoceros, Ceratotherium simum simum: implications for mating strategies |
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Journal Article |
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Year |
2007 |
Publication |
Animal Behaviour |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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Volume |
74 |
Issue |
2 |
Pages |
349-356 |
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Keywords |
Ceratotherium simum simum; foraging; habitat choice; home range use; mate choice; mating systems; ranging pattern; resource distribution; white rhinoceros |
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Abstract |
How animals use space has important consequences for feeding ecology, social organization, mating strategies and conservation management. In white rhinoceros, female home ranges are much larger than male territories, suggesting that movement patterns are influenced by factors other than resource distribution. In this study we placed radiotransmitters on 15 female white rhinoceros, recording 1758 locations and collecting behavioural data during 1671 observation sessions, making this the largest data set of its kind in this species. We investigated how habitat variables and male territories influenced female movement and reproductive behaviour. Female home ranges were approximately 20 km2 and core areas were 5 km2, with male territories roughly the same size as female core areas. Female range size did not vary with season, but the pattern of space use did vary. Females used grassland habitat preferentially, utilizing these areas significantly more than expected based on availability. Findings relevant to the mating strategy include: (1) the amount of grassland in a male's territory predicted female use of the territory; (2) the time that a female spent in a male's territory was a significant predictor of reproductive activity with the male, indicating that females probably mate with the most familiar male; and (3) the temporal pattern of female space use suggests that females did not increase mate sampling behaviour nor did they become more choosy about which males they visited when reproductively active. These findings suggest that males may maximize reproductive success by defending areas containing more grassland habitat. |
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0003-3472 |
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Equine Behaviour @ team @ |
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6146 |
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Author |
Greco, B.J.; Brown, T.K.; Andrews, J.R.M.; Swaisgood, R.R.; Caine, N.G. |
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Title |
Social learning in captive African elephants (Loxodonta africana africana) |
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Journal Article |
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Year |
2013 |
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Abbreviated Journal |
Animal Cognition |
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16 |
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3 |
Pages |
459-469 |
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Keywords |
Elephants; Loxodonta; Social learning; Imitation; Animal cognition |
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Abstract |
Social learning is a more efficient method of information acquisition and application than trial and error learning and is prevalent across a variety of animal taxa. Social learning is assumed to be important for elephants, but evidence in support of that claim is mostly anecdotal. Using a herd of six adult female African bush elephants (Loxodonta africana africana) at the San Diego Zoo’s Safari Park, we evaluated whether viewing a conspecific’s interactions facilitated learning of a novel task. The tasks used feeding apparatus that could be solved in one of two distinct ways. Contrary to our hypothesis, the method the demonstrating animal used did not predict the method used by the observer. However, we did find evidence of social learning: After watching the model, subjects spent a greater percentage of their time interacting with the apparatus than they did in unmodeled trials. These results suggest that the demonstrations of a model may increase the motivation of elephants to explore novel foraging tasks. |
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Springer-Verlag |
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English |
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1435-9448 |
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no |
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Equine Behaviour @ team @ |
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5668 |
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