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首页> 外文期刊>Primates >Grandmothers care for orphans in a provisioned troop of Japanese macaques (Macaca fuscata)
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Grandmothers care for orphans in a provisioned troop of Japanese macaques (Macaca fuscata)

机译：祖母在预备役的日本猕猴（Macaca fuscata）队伍中照顾孤儿。

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This study reports cases in which grandmothers and other closely related adult females cared for orphans in the Arashiyama E-troop, a provisioned troop of Japanese macaques (Macaca fuscata). I observed the behavioral patterns of three orphans (aged 1, 2, and 3 years, respectively). The grandmothers cared for two orphans, while three other closely related adult females cared for the rest of the orphans whose grandmothers were absent. These observations differ from those of previous studies that reported that grandmothers were indifferent towards orphans. This intraspecific variation may be attributed to the demographic conditions of the troop in this study, which had only a few related nulliparous adult females, as a result of artificial birth control. In this group, adult females showed decreased fecundity and an increased interbirth interval as they received birth control treatment; thus, in the absence of their own dependent infants, these females may have invested time in the care of related orphans. Although caregiving by grandmothers is believed to be rare or insignificant in primates, this study suggests that grandmothers and other closely related adult females play an important role for orphans in troops with few related adult females.
机译：这项研究报告了一些案例，其中外婆和其他密切相关的成年女性在岚山电子部队（一种由日本猕猴（Macaca fuscata）提供）中照顾孤儿的情况。我观察了三个孤儿的行为模式（分别为1岁，2岁和3岁）。祖母照顾两个孤儿，而其他三名密切相关的成年女性照顾其余没有祖母的孤儿。这些观察结果与以前的研究报告不同，以前的研究报告说祖母对孤儿无动于衷。这种种内变异可能归因于该研究中部队的人口统计学条件，由于人工节育，该部队只有几名相关的未产雌性成年女性。在这一组中，成年女性在接受节育治疗后，其生殖力下降，生育间隔延长。因此，在没有自己的抚养婴儿的情况下，这些女性可能花了一些时间在相关孤儿的照顾上。尽管据信在灵长类动物中祖母的照顾很少或没有意义，但这项研究表明，祖母和其他密切相关的成年女性在孤儿中的亲人扮演着重要角色，而成年女性却很少。

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