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| Author |
Benson-Amram, S.; Weldele, M.L.; Holekamp, K.E. |
| Title |
A comparison of innovative problem-solving abilities between wild and captive spotted hyaenas, Crocuta crocuta |
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Journal Article |
| Year |
2013 |
Publication |
Animal Behaviour |
Abbreviated Journal |
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| Volume |
85 |
Issue |
2 |
Pages |
349-356 |
| Keywords |
Crocuta crocuta; innovation; neophobia; problem solving; spotted hyaena |
| Abstract |
Innovative problem solving enables individuals to deal with novel social and ecological challenges. However, our understanding of the importance of innovation for animals in their natural habitat is limited because experimental investigations of innovation have historically focused on captive animals. To determine how captivity affects innovation, and whether captive studies of animal innovation suffer from low external validity, we need experimental investigations of innovation in both wild and captive populations of the same species in diverse taxa. Here we inquired whether wild and captive spotted hyaenas differ in their ability to solve the same novel technical problem, and in the diversity of exploratory behaviours they exhibit when first interacting with the problem. Our results suggest that wild and captive populations show important differences in their innovative problem-solving abilities. Captive hyaenas were significantly more successful at solving the novel problem, and significantly more diverse in their initial exploratory behaviour, than were wild hyaenas. We were able to rule out hypotheses suggesting that these differences result from excess energy or time available to captive animals. We conclude that captive hyaenas were more successful because captive individuals were less neophobic and more exploratory than their wild counterparts. These results have important implications for our interpretation of studies on innovative problem solving in captive animals and aid our attempts to gain a broader understanding of the importance of innovation for animals in their natural habitat. |
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0003-3472 |
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Equine Behaviour @ team @ |
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5657 |
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Briefer Freymond, S.; Briefer, E.F.; Niederhäusern, R.V.; Bachmann, I. |
| Title |
Pattern of Social Interactions after Group Integration: A Possibility to Keep Stallions in Group |
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Journal Article |
| Year |
2013 |
Publication |
PLoS ONE |
Abbreviated Journal |
PLoS ONE |
| Volume |
8 |
Issue |
1 |
Pages |
e54688 EP - |
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<p>Horses are often kept in individual stables, rather than in outdoor groups, despite such housing system fulfilling many of their welfare needs, such as the access to social partners. Keeping domestic stallions in outdoor groups would mimic bachelor bands that are found in the wild. Unfortunately, the high level of aggression that unfamiliar stallions display when they first <italic>encounter each other</italic> discourages owners from keeping them in groups. However, this level of aggression is likely to be particularly important only during group integration, when the dominance hierarchy is being established, whereas relatively low aggression rates have been observed among stable feral bachelor bands. We investigated the possibility of housing breeding stallions owned by the Swiss National Stud in groups on a large pasture (5 stallions in 2009 and 8 stallions in 2010). We studied the pattern of agonistic, ritual and affiliative interactions after group integration (17–23 days), and the factors influencing these interactions (time after group integration, dominance rank, age or experience of group housing). We found that stallions displayed generally more ritual than agonistic and than affiliative interactions. The frequency of agonistic and ritual interactions decreased quickly within the first three to four days. The frequency of affiliative interactions increased slowly with time before decreasing after 9–14 days. A stable hierarchy could be measured after 2–3 months. The highest-ranking males had less ritual interactions than the lowest-ranking. Males had also less agonistic, ritual and affiliative interactions if they had already been housed in a group the previous year. Therefore, we found that breeding stallions could be housed together on a large pasture, because the frequency of agonistic interactions decreased quickly and remained at a minimal level from the fourth day following group integration. This housing system could potentially increase horse welfare and reduce labour associated with horse management.</p> |
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Public Library of Science |
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Equine Behaviour @ team @ |
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5656 |
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Benz, B.; Benitz, B.; Krueger, K.; Winter, D. |
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Weniger Einstreu bei gleichem Komfort |
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Journal Article |
| Year |
2013 |
Publication |
Pferdezucht und Haltung |
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1 |
Issue |
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Pages |
66-71 |
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AVA-Verlag-Allgäu GmbH |
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Kempten |
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Equine Behaviour @ team @ |
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5654 |
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