Jaguar mobbing by giant otter groups

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• 作者：Caroline Leuchtenberger ; Samara Bezerra Almeida ; Artur Andriolo…
• 刊名：Acta ethologica
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：19
• 期：2
• 页码：143-146
• 全文大小：868 KB
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Behavioural Sciences
  Zoology
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1437-9546
• 卷排序：19

文摘

Group-living in carnivores is mostly associated with cooperative hunting and anti-predator defense. Giant otters (Pteronura brasiliensis) live in monogamous and cooperative breeding groups, where mechanisms other than cooperative foraging may be driving group maintenance in the species. We herein describe three interactions between giant otters and jaguars (Panthera onca) observed in the wild, two of which involved groups of otters and one, a lone individual. In the two group instances, the otters mobbed the jaguar until it left the area. The mobbing behavior displayed in these instances likely reinforces the advantages of living in groups, reducing predation risk and promoting group cohesion, with resulting territorial and fitness benefits.KeywordsPanthera oncaPteronura brasiliensisAnti-predator defenseGroup defenseSociality