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Primate Research
Online ISSN : 1880-2117
Print ISSN : 0912-4047
ISSN-L : 0912-4047
Current issue
Displaying 1-10 of 10 articles from this issue
Preface
  • Shoji KAWAMURA
    2024 Volume 39 Issue 2 Pages 75-76
    Published: 2024
    Released on J-STAGE: December 27, 2023
    DOI
    JOURNAL FREE ACCESS
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Material
  • Kunio WATANABE, Takeaki HONDA, Yukihisa MITO
    Article type: Material
    2024 Volume 39 Issue 2 Pages 77-83
    Published: 2024
    Released on J-STAGE: December 27, 2023
    Advance online publication: November 07, 2023
    DOI
    JOURNAL FREE ACCESS
    J-STAGE Data

    Takeshita carried out a mail-questionnaire survey on the distribution and existing population of Japanese macaques, Macaca fuscata, in 1970. In the survey, the questionnaires were sent to more than one-third of all Japanese local governments (1102 cities, towns and villages in total) where wild monkeys were likely to be found and received replies from 85% of them. These results, however, have been stored for more than half-century without public announcement. All information including the location maps, estimated population sizes and degree of crop raiding where Japanese macaques lived in 1970 are presented.

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Review
  • Takuya MATSUMOTO
    Article type: Review
    2024 Volume 39 Issue 2 Pages 85-96
    Published: 2024
    Released on J-STAGE: December 27, 2023
    DOI
    JOURNAL FREE ACCESS

    In this paper, I discuss the relationship between social organization and offspring-rearing methods, which are starting to be used as a novel indicator in interspecies societal comparisons. Additionally, I clarify the relationship between the intimacy of the mother–offspring relationship and the development of foraging in the offspring. I suggest that the establishment of a base camp in human evolution is important not only to facilitate effective hunting and gathering but also for immature individuals to reduce the cost of accompanying adults and engage in their own foraging activities.

    I also attempt to deconstruct weaning from the offspring’s perspective, which often focuses on the mother’s decision to stop breastfeeding. Specifically, I focus on the development of the offspring’s ability to acquire food independently and the offspring’s behavior away from its mother. I suggest that there is no significant difference between humans and African apes in the timing when the offspring significantly reduces its dependence on breast milk. This paper also depicts “early weaning” as a characteristic of the unique life history of humans, in which the mother conceives a second offspring at the same time as or even before the offspring becomes much less dependent on the mother’s milk.

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Information
  • Shun HONGO, Shiaki KONDO, Rikai SAWAFUJI, Takushi HAYAKAWA, Haruka ...
    Article type: Information
    2024 Volume 39 Issue 2 Pages 97-100
    Published: 2024
    Released on J-STAGE: December 27, 2023
    Advance online publication: August 31, 2023
    DOI
    JOURNAL FREE ACCESS
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Workshop report on the 39th Annual Meeting of PSJ
Proceedings of the 39th Annual Meeting of PSJ
Announcement from the Executive Board
Conservation
  • Primate Society of Japan
    2024 Volume 39 Issue 2 Pages 110
    Published: 2024
    Released on J-STAGE: December 27, 2023
    DOI
    JOURNAL FREE ACCESS
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Highlight of the Papers in Primates
Editorial Note
  • Primate Society of Japan
    2024 Volume 39 Issue 2 Pages 113
    Published: 2024
    Released on J-STAGE: December 27, 2023
    DOI
    JOURNAL FREE ACCESS
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