Hormone profiles and reproductive characteristics in wild female Japanese macaques (Macaca fuscata)

Article Abstract:

The reproductive characteristics of wild female Japanese macaques (Macaca fuscata fuscata) are investigated in two non-consecutive years using noninvasive methods to monitor physiological events. The study reports on female reproductive variables, describes the changes in physical and behavioral states across an ovarian cycle, and investigates female fertility as inferred from rates of copulation, ovulation, conception, and birth.

United States, Animal reproduction

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Long-term variation in fruiting and the food habits of wild Japanese Macaques on Kinkazan Island Northern Japan

Article Abstract:

The relationship between the food habits of Japanese macaques and the availability of nuts on Kinkazan Island, Northern Japan from 1997 to 2005 was examined in order to examine the long-term variations in both food habits and availability. It is seen that food availability was poor in summer and winter but in several years the monkeys consumed nuts during those seasons.

Food and nutrition

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Effects of proximity and behavioral context on acoustic variation in the coo calls of Japanese Macaques

Article Abstract:

A study to examine the relevance of acoustic variation in coo calls among Japanese Macaques and the factors for differences is conducted. Results conclude that Japanese Macaques produce calls having more detectable and locatable features depending on their proximity to group members.

Behavior, Animal sounds

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