DEMOGRAPHY AND REPRODUCTIVE PARAMETERS OF A FREE-RANGING GROUP OF JAPANESE MACAQUES (MACACA-FUSCATA) AT KATSUYAMA
DEMOGRAPHY AND REPRODUCTIVE PARAMETERS OF A FREE-RANGING GROUP OF JAPANESE MACAQUES (MACACA-FUSCATA) AT KATSUYAMA
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DOI：
10.1007/bf02382762
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发表时间：
1992-01-01
期刊：
影响因子：
1.7
通讯作者：
IMAKAWA, S
中科院分区：
文献类型：
--
作者：
ITOIGAWA, N;TANAKA, T;IMAKAWA, S
在日本冈山县胜山的一组自由放养的日本猕猴中，对雌性猕猴的人口统计学和生殖数据进行了为期28年的分析。4岁和5岁的总体平均年龄特异性生育率分别为5.43%和41.86%，13岁时达到峰值66.67%。16-19岁的生育率仍较高（52.31-54.24%），20-23岁的生育率急剧下降（45.45-17.86%），24-26岁的生育率很低。27岁或以上的女性没有生育婴儿。初次生育的平均年龄为5.41岁。出生人数在五月中旬达到顶峰。在研究期间，每年第一胎出生的时间基本保持不变，而中位数和最后一胎出生的时间则向季节后期转移。所有女性的平均生育间隔为1.56年。该值为1.54年的经产女性和1.29年的女性后，婴儿丢失。这些间隔时间明显短于那些未经产的女性，和女性与存活的婴儿。出生后第一年内的总体平均婴儿死亡率为10.2%。10-14岁的这一比例为8.6%，15-19岁的这一比例为7.5%。四个女性母系统治等级的出生时间不同。雌性生育率随着母系统治地位的增加而增加。建议根据该群体的历史详细分析所有人口和生殖数据。
Demographic and reproductive data were analyzed for a period of 28 years in the females of a free-ranging group of Japanese macaques at Katsuyama, Okayama Prefecture, Japan. The overall mean, age-specific fecundity rates were 5.43% for 4-year-olds and 41.86% for 5-year-olds, increasing to a peak of 66.67% for 13-year-olds. Fecundity remained relatively high (52.31-54.24%) in 16-19-year-olds, but decreased sharply (45.45-17.86%) in 20-23-year-olds, and became very low in 24-26-year-olds. Females aged 27 years or more did not produce infants. The average age at first birth was 5.41 years. Births peaked in mid-May. The timing of the first births each year remained essentially unchanged during the study period, whereas the timing of the median and last births shifted towards the later part of the season. The mean interbirth interval for all females was 1.56 years. The value was 1.54 years for multiparous females and 1.29 years for females following infant loss. These intervals were significantly shorter than those for primiparous females, and females with surviving infants. The overall mean infant mortality within the first year of life was 10.2%. The value was 8.6% for 10-14-year-olds, and 7.5% for 15-19-year-olds. The timing of birth differed among the four female matrilineal dominance rank-classes. The female fecundity rates increased as a function of matrilineal dominance rank. It is suggested that all demographic and reproductive data should be analyzed in detail with respect to the group's history.