Sugiyama Y, Ohsawa H
Folia Primatol (Basel). 1982;39(3-4):238-63. doi: 10.1159/000156080.
Population dynamics of Japanese monkeys (Macaca fuscata) have been studied at Mt. Ryozen, central Japan, between 1969 and 1980. The troop had been artificially fed until August 1973 and, since then, has been living in its natural habitat without artificial feeding. Increase in body weight, primiparous age, age-specific natality, survivorship and mortality, population and biomass growth rate, and age of disappearance of young males were compared between the two study periods, with and without artificial feeding. Comparison of population parameters in each study period was also done between social classes, central and peripheral. As shown, in table VII, it was revealed that artificial feeding was an important factor in population growth and, furthermore, that this effect was mainly on the kin-groups of the central class of the troop. In the natural habitat without artificial feeding most of the population parameters showed almost the same figure for kin-groups of central and peripheral classes.
1969年至1980年间，在日本中部的御岳山对日本猕猴（Macaca fuscata）的种群动态进行了研究。该猴群在1973年8月之前一直依靠人工喂养，从那时起，它们就生活在自然栖息地中，不再进行人工喂养。比较了两个研究时期（有和没有人工喂养）之间的体重增加、初产年龄、特定年龄出生率、存活率和死亡率、种群和生物量增长率以及年轻雄性消失的年龄。还比较了每个研究时期内社会阶层（核心阶层和边缘阶层）之间的种群参数。如表七所示，结果表明人工喂养是种群增长的一个重要因素，此外，这种影响主要作用于猴群核心阶层的亲属群体。在没有人工喂养的自然栖息地中，核心阶层和边缘阶层亲属群体的大多数种群参数几乎相同。
