Mountain gorilla reproduction and sexual behavior
Mountain gorilla reproduction and sexual behavior
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山地大猩猩的繁殖和性行为
DOI：
10.1002/ajp.1350240307
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发表时间：
1991
影响因子：
2.4
通讯作者：
D. Watts
中科院分区：
文献类型：
--
作者：
D. Watts
对山地大猩猩的繁殖行为、种群统计学以及性行为的数据进行了综述，并与之前对野生大猩猩繁殖的综述以及圈养大猩猩的数据进行了比较。涵盖的主题包括成熟、雌性迁移模式和繁殖史、繁殖间隔、对生育力的影响、幼崽死亡率、出生性别比、出生季节性、交配行为以及发情周期。此处呈现的最新分析结果大多证实了之前对同一群体的研究。新的信息表明，交配发起的责任因雌性生育能力和性状态而异；幼崽在第一年的死亡率比之前报道的要高；出生性别比为1∶1；并且在种群层面上，雄性出生后的生育间隔与雌性出生后的生育间隔相同。繁殖间隔、性周期和交配行为的数据通常与许多圈养情况下的数据相似。有两个发现与圈养雌性繁殖停止的问题特别相关。首先，在野外生育能力并没有明显随年龄下降。其次，很大比例的雌性在其出生群体中繁殖，有些还在那里生育了多胎。
Data on mountain gorilla reproductive behavior, demography, and sexual behavior are reviewed and compared with earlier reviews of reproduction by wild gorillas and with data on captive gorillas. Topics covered include maturation, female transfer patterns and reproductive histories, reproductive intervals, influences on fertility, infant mortality, sex ratios at birth, birth seasonality, copulatory behavior, and estrus cyclicity. Most of the results of the updated analyses presented here corroborate those from previous studies of the same population. Newer information shows that responsibility for the initiation of copulations varies in association with female fertility and sexual state; that infant mortality in the first year is higher than reported earlier; that the sex ratio at birth is 1:1; and that, on a population level, interbirth intervals following the birth of males are the same length as those after female births. Data on reproductive intervals, sexual cyclicity, and copulatory behavior are generally similar to data from many captive situations. Two findings are particularly relevant to the problem of cessation of reproduction by captive females. First, fertility does not obviously decline with age in the wild. Second, a high proportion of females have reproduced in their natal groups and some have had multiple births there.