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Ranging behavior of Mahale chimpanzees: a 16 year study.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Nakamura, Michio Corp, Nadia Fujimoto, Mariko Fujita, Shiho Hanamura, Shunkichi Hayaki, Hitoshige Hosaka, Kazuhiko Huffman, Michael A. Inaba, Agumi Inoue, Eiji Itoh, Noriko Kutsukake, Nobuyuki Kiyono-Fuse, Mieko Kooriyama, Takanori Marchant, Linda F. Matsumoto-Oda, Akiko Matsusaka, Takahisa McGrew, William C. Mitani, John C. Nishie, Hitonaru Norikoshi, Koshi Sakamaki, Tetsuya Shimada, Masaki Turner, Linda A. Wakibara, James V. Zamma, Koichiro
Spatial Coverage	Tanzania
Description	Country affiliation: Japan Author Affiliation: Nakamura M ( Wildlife Research Center, Kyoto University, 2-24, Tanaka-Sekiden-cho, Sakyo, Kyoto 606-8203, Japan. nakamura@wrc.kyoto-u.ac.jp)
Abstract	We have analyzed the ranging patterns of the Mimikire group (M group) of chimpanzees in the Mahale Mountains National Park, Tanzania. During 16 years, the chimpanzees moved over a total area of 25.2 or 27.4 km(2), as estimated by the grid-cell or minimum convex polygon (MCP) methods, respectively. Annually, the M group used an average of 18.4 km(2), or approximately 70 %, of the total home-range area. The chimpanzees had used 80 % of their total home range after 5 years and 95 % after 11 years. M group chimpanzees were observed more than half of the time in areas that composed only 15 % of their total home range. Thus, they typically moved over limited areas, visiting other parts of their range only occasionally. On average, the chimpanzees used 7.6 km(2) (in MCP) per month. Mean monthly range size was smallest at the end of the rainy season and largest at the end of the dry season, but there was much variability from year to year. The chimpanzees used many of the same areas every year when Saba comorensis fruits were abundant between August and January. In contrast, the chimpanzees used several different areas of their range in June. Here range overlap between years was relatively small. Over the 16 years of the study we found that the M group reduced their use of the northern part of their range and increased their frequency of visits to the eastern mountainous side of their home range. Changes in home-range size correlated positively with the number of adult females but not with the number of adult males. This finding does not support a prediction of the male-defended territory model proposed for some East African chimpanzee unit-groups.
File Format	HTM / HTML
ISSN	00328332
Issue Number	2
Volume Number	54
e-ISSN	16107365
Journal	Primates
Language	English
Publisher	Springer
Publisher Date	2013-04-01
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Zoology Homing Behavior Pan Troglodytes Physiology Animals Demography Female Male Seasons Tanzania Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology

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