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Troop extinction and fusion in wild Japanese macaques of Yakushima Island, Japan
Author(s) -
Takahata Yukio,
Suzuki Shigeru,
Okayasu Naobi,
Hill David
Publication year - 1994
Publication title -
american journal of primatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.988
H-Index - 81
eISSN - 1098-2345
pISSN - 0275-2565
DOI - 10.1002/ajp.1350330406
Subject(s) - demography , extinction (optical mineralogy) , geography , seasonal breeder , range (aeronautics) , zoology , biology , sociology , engineering , paleontology , aerospace engineering
A wild Japanese macaque troop decreased in size because the birth rate dropped and infant mortality increased. In the 1989 mating season, the last male left the troop, and the remaining two females joined a neighboring troop. Thus, the troop ceased to exist as an independent troop. A lower limit to troop size may exist, below which a troop cannot effectively defend its range, forcing the females to join a larger troop. © 1994 Wiley‐Liss, Inc.