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タイトル: | Comparison of feeding behavior between two different-sized groups of Japanese macaques (Macaca fuscata yakui). |
著者: | Kurihara, Yosuke Hanya, Goro https://orcid.org/0000-0002-8612-659X (unconfirmed) |
著者名の別形: | 栗原, 洋介 |
キーワード: | feeding competition ecological constraints model patch use group size Macaca fuscata yakui |
発行日: | Sep-2015 |
出版者: | wiley |
誌名: | American journal of primatology |
巻: | 77 |
号: | 9 |
開始ページ: | 986 |
終了ページ: | 1000 |
抄録: | Group-living animals face intragroup scramble and intergroup contest competitions. Many studies have shown that larger groups bear the costs of intragroup scramble competition, which negatively affects the reproductive success of females. Unlike most primate species, Japanese macaques in the Yakushima coastal forest show increased reproductive success with group size. However, it remains unclear how group size affects the behavior of macaques. The present study examined the effects of group size on the feeding behavior of Japanese macaques in the Yakushima coastal forest. We investigated 9-13 adult females from two different-sized groups via focal animal sampling during October 2012-August 2013. We compared the feeding behavior, including patch use, between the two groups. The larger group had a larger home range and spent more time feeding, especially on mature leaves. This suggests that intragroup feeding competition should be more intense in the larger group than in the smaller group. The feeding of mature leaves might enable the larger group to increase the number of co-feeding individuals. Contrary to the predictions that the larger group travels longer distances and spends more time moving, the smaller group traveled longer distances, and spent more time moving, although the number of visited patches did not differ between the two groups. The immediate consequences of the loss of inter-group encounters could accumulate as daily travel costs, considering that group size is associated with inter-group dominance and that intergroup aggressive encounters occur frequently in the Yakushima coastal forest. This suggests that the smaller group has increased travel costs as a result of intergroup contest competition, which leads to decline in reproductive success. |
記述: | Article first published online: 13 MAY 2015 |
著作権等: | This is the peer reviewed version of the following article: Kurihara, Y. and Hanya, G. (2015), Comparison of feeding behavior between two different-sized groups of Japanese macaques (Macaca fuscata yakui). Am. J. Primatol., 77: 986–1000, which has been published in final form at http://dx.doi.org/10.1002/ajp.22429. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. The full-text file will be made open to the public on 13 MAY 2016 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. この論文は著者最終稿です。内容が印刷版と異なることがありますので、引用の際には出版社版をご確認ご利用ください。This is the Accepted Author Manuscript. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/202032 |
DOI(出版社版): | 10.1002/ajp.22429 |
PubMed ID: | 25974315 |
出現コレクション: | 学術雑誌掲載論文等 |
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