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Author |
Core Development Team, R. |
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Title |
R: a language and environment for statistical computing |
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2011 |
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R foundation for statistical computing |
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Vienna, Austria |
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Equine Behaviour @ team @ Core Development Team2011 |
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6489 |
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Author |
Coblentz, B.E. |
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Title |
The effects of feral goats (Capra hircus) on island ecosystems |
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1978 |
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Biol Conserv |
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13 |
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Equine Behaviour @ team @ Coblentz1978 |
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6250 |
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Author |
Clutton-Brock, J. |
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Title |
Origins of the dog: domestication and early history |
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1995 |
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The Domestic Dog: Its Evolution, Behaviour and Interactions with People |
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Cambridge University Press |
Place of Publication |
Cambridge |
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Serpell, J.A. |
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Equine Behaviour @ team @ Clutton-Brock1995 |
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6247 |
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Author |
Cinková, I.; Policht, R. |
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Title |
Sex and species recognition by wild male southern white rhinoceros using contact pant calls |
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2016 |
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Animal Cognition |
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Anim. Cogn. |
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19 |
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2 |
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375-386 |
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Abstract |
Recognition of information from acoustic signals is crucial in many animals, and individuals are under selection pressure to discriminate between the signals of conspecifics and heterospecifics or males and females. Here, we first report that rhinos use information encoded in their calls to assess conspecifics and individuals of closely related species. The southern (Ceratotherium simum) and critically endangered northern (C. cottoni) white rhinos are the most social out of all the rhinoceros species and use a contact call pant. We found that southern white rhino pant calls provide reliable information about the caller’s sex, age class and social situation. Playback experiments on wild territorial southern white rhinoceros males revealed that they responded more strongly to the pant calls of conspecific females compared to the calls of other territorial males. This suggests that pant calls are more important form of communication between males and females than between territorial males. Territorial southern males also discriminated between female and territorial male calls of northern species and reacted more intensively to the calls of northern than southern males. This might be caused by a novelty effect since both species naturally live in allopatry. We conclude that white rhinos can directly benefit from assessing individuals at long distances using vocal cues especially because their eyesight is poor. Pant calls thus likely play a significant role in their social relationships and spatial organization. In addition, better understanding of vocal communication in white rhinos might be helpful in conservation management particularly because of their low reproduction in captivity. |
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1435-9456 |
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Equine Behaviour @ team @ Cinková2016 |
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6144 |
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Author |
Cinková, I.; Policht, R. |
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Title |
Discrimination of familiarity and sex from chemical cues in the dung by wild southern white rhinoceros |
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2015 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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18 |
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1 |
Pages |
385-392 |
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Communication in rhinos is primarily mediated by the vocal and olfactory signals as they have relatively poor eyesight. White rhinos are the most social of all the rhinoceros species, they defecate at common dungheaps and the adult bulls use dung and urine to mark their territory. Chemical communication may therefore be particularly important in the social interactions of white rhinos, and its knowledge could be very helpful in their management and conservation. However, no studies have investigated up until now the olfactory discrimination in any rhinoceros species in the wild. We have experimentally studied the reactions of the wild southern white rhinos (Ceratotherium simum) to the dung of familiar and unfamiliar adult females and adult territorial males. We registered the number of sniffing events, the duration of sniffing and the latency of the vigilance posture from the onset of sniffing. The dung of unfamiliar rhinos was sniffed longer than that of familiar rhinos. The rhinos showed a shorter latency of vigilance posture to the familiar dung of males than that of females. For unfamiliar dung, they displayed a shorter latency of vigilance posture to female than male dung. Our results indicate that the rhinos are able to discriminate the familiarity and sex of conspecifics from the smell of their dung. Olfactory cues could therefore play an important role in the social relationships and spatial organization of the southern white rhinoceros. |
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1435-9456 |
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Equine Behaviour @ team @ Cinková2015 |
Serial |
6143 |
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Author |
Charif, R.A.; Waack, A.M.; Strickman, L.M. |
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Title |
Raven Pro 1.3 User's Manual |
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2008 |
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Cornell Laboratory of Ornithology |
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Ithaca, New York |
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Equine Behaviour @ team @ Charif2008 |
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6488 |
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Author |
Chapron, G.; Kaczensky, P.; Linnell, J.D.C.; Arx, M.; Huber, D.; Andrén, H. |
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Title |
Recovery of large carnivores in Europe's modern human-dominated landscapes |
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Journal Article |
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2014 |
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Science |
Abbreviated Journal |
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346 |
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Equine Behaviour @ team @ Chapron2014 |
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6451 |
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Author |
Camerlink, I.; Menneson, S.; Turner, S.P.; Farish, M.; Arnott, G. |
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Title |
Lateralization influences contest behaviour in domestic pigs |
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2018 |
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Scientific Reports |
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8 |
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1 |
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12116 |
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Abstract |
Cerebral lateralization, i.e. hemispheric asymmetries in structure and function, relates in many species to a preference to attack from their left. Lateralization increases cognitive capacity, enabling the simultaneous processing of multiple sources of information. Therefore, lateralization may constitute a component of fighting ability (Resource Holding Potential), and/or influence the efficiency of information-gathering during a contest. We hypothesized that lateralization will affect contest outcome and duration, with an advantage for more strongly lateralized individuals. In 52 dyadic contests between weight-matched pigs (Sus scrofa; n = 104; 10 wk age), the direction of orientation towards the opponent was scan sampled every 10 s. Laterality indexes (LI) were calculated for the direction and strength of lateralization. Up to 12.5% of the individuals showed significant lateralization towards either the right or left but lateralization was absent at the population level. In line with our hypothesis, animals showing strong lateralization (irrespective of direction) had a shorter contest duration than animals showing weak lateralization. Winners did not differ from losers in their strength or direction of lateralization. Overall the results suggest that cerebral lateralization may aid in conflict resolution, but does not directly contribute to fighting ability, and will be of value in the study of animal contests. |
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2045-2322 |
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Equine Behaviour @ team @ Camerlink2018 |
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6700 |
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Author |
Burch, J.W.; Layne, G.A.; Follmann, E.H.; Rexstad, E.A. |
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Title |
Evaluation of Wolf Density Estimation from Radiotelemetry Data |
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2005 |
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Wildl Soc Bull |
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33 |
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Equine Behaviour @ team @ Burch2005 |
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6477 |
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Author |
Brust, V.; Guenther, A. |
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Title |
Domestication effects on behavioural traits and learning performance: comparing wild cavies to guinea pigs |
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Journal Article |
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Year |
2015 |
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Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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18 |
Issue |
1 |
Pages |
99-109 |
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The domestication process leads to a change in behavioural traits, usually towards individuals that are less attentive to changes in their environment and less aggressive. Empirical evidence for a difference in cognitive performance, however, is scarce. Recently, a functional linkage between an individual's behaviour and cognitive performance has been proposed in the framework of animal personalities via a shared risk-reward trade-off. Following this assumption, bolder and more aggressive animals (usually the wild form) should learn faster. Differences in behaviour may arise during ontogeny due to individual experiences or represent adaptations that occurred over the course of evolution. Both might singly or taken together account for differences in cognitive performance between wild and domestic lineages. To test for such possible linkages, we compared wild cavies and domestic guinea pigs, both kept in a university stock for more than 30 years under highly comparable conditions. Animals were tested in three behavioural tests as well as for initial and reversal learning performance. Guinea pigs were less bold and aggressive than their wild congeners, but learnt an association faster. Additionally, the personality structure was altered during the domestication process. The most likely explanation for these findings is that a shift in behavioural traits and their connectivity led to an altered cognitive performance. A functional linkage between behavioural and cognitive traits seems to exist in the proposed way only under natural selection, but not in animals that have been selected artificially over centuries. |
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1435-9456 |
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Equine Behaviour @ team @ Brust2015 |
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6194 |
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