Reproductive biology of rhesus and Japanese macaques |
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Authors: | Linda D Wolfe |
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Institution: | (1) Department of Anthropology, University of Florida, 32611 Gainesville, Florida, USA |
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Abstract: | This paper offers a comparison of the reproductive biology of the Japanese macaques of Arashiyama, Japan and the free-ranging
rhesus macaques of Silver Springs, Florida, U.S.A. The data indicate that rhesus macaques of Silver Springs have a higher
reproductive rate than the Japanese macaques of Arashiyama. The reproducive rate of the rhesus monkeys over three birth seasons
is 82% and that for the Japanese macaque is 53%. The higher reproductive rate of rhesus monkeys is accomplished through an
earlier onset of sexual maturation (4 and 5 years for the rhesus and 5 and 6 years for the Japanese monkeys) and a shorter
interbirth interval (14.27±5.54 months for rhesus and 18.00±6.57 months for Japanese monkeys). It is suggested that, because
of the relatively harsh winters experienced by Japanese macaques, the slower reproductive rate of the Japanese monkeys has
been selected for in order to enable females to lengthen the time in which maternal care is extended to their offspring. |
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Keywords: | M mulatta M fuscata Hybrids Reproductive biology |
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