THE SOCIAL GROUP OF PYGMY CHIMPANZEES PAN-PANISCUS OF WAMBA ZAIRE
THE SOCIAL GROUP OF PYGMY CHIMPANZEES PAN-PANISCUS OF WAMBA ZAIRE
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DOI:
10.1007/bf02381159
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发表时间:
1982-01-01
期刊:
影响因子:
1.7
通讯作者:
KANO T
中科院分区:
文献类型:
--
作者:
KANO T
This is a sociological study of the pygmy chimpanzees of Wamba which were provisioned sufficiently since 1977. The society of the pygmy chimpanzee is basically similar to that of the common chimpanzee in the flexibility in forming parties and in the existence of a definite social unit, i.e., unit group. It also resembles in that young females play an important role in exchanging members among unit groups, thus, as transmitters of genes from group to group; males do in integrating groups, delimiting the social boundaries of unit groups through their inter-group antagonism. Pygmy chimpanzees differ from common chimpanzees in fission and fusion pattern of parties. The former generally forms parties larger in size and more homogeneous in composition than the latter. Any party of the former has both reproductive and nursing functions; the parties of the latter are categorized into various types according to functions and compositions. This uniformity in pygmy chimpanzee parties seems to be well maintained by the females' high sexual ability to manifest semi-continual estrus.