論文

2015年6月

The composition and function of all-male herds of Thornicroft's giraffe, Giraffa camelopardalis thornicrofti, in Zambia

AFRICAN JOURNAL OF ECOLOGY
  • Fred B. Bercovitch
  • ,
  • Philip S. M. Berry

53
2
開始ページ
167
終了ページ
174
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1111/aje.12169
出版者・発行元
WILEY-BLACKWELL

Temporary all-male social groups are formed in a number of animal species. We examined 34years of data collected from 36 male Thornicroft's giraffe in the Luangwa Valley, Zambia, to test a set of predictions related to five possible functions of all-male herds (predator protection, practicing aggressive skills, prolonging life, nutritional demands and resource learning). We found that all-male herds were significantly smaller than mixed-sex herds, usually contained a mature bull, and were not dependent upon season or habitat. Dyadic associations between males in single sex herds were quite weak, with <25% of potential male dyads sighted together in an all-male herd. Our data are best explained as a resource learning strategy adopted by males to obtain more extensive knowledge about the habitat, including both food and female distribution. However, other benefits in the form of predator protection, dietary intake and sharpening competitive skills for future contests over estrous females also seem to mediate formation of giraffe all-male groups. We conclude that the primary advantage of roaming in all-male herds changes during the life history of males.

リンク情報
DOI
https://doi.org/10.1111/aje.12169
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000353453300006&DestApp=WOS_CPL
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84928343796&origin=inward
ID情報
  • DOI : 10.1111/aje.12169
  • ISSN : 0141-6707
  • eISSN : 1365-2028
  • SCOPUS ID : 84928343796
  • Web of Science ID : WOS:000353453300006

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