2009年8月
Sexual Dimorphism in Facial Shapes and Their Discrimination in Japanese Monkeys (Macaca fuscata)
JOURNAL OF COMPARATIVE PSYCHOLOGY
- ,
- ,
- 巻
- 123
- 号
- 3
- 開始ページ
- 326
- 終了ページ
- 333
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1037/a0016219
- 出版者・発行元
- AMER PSYCHOLOGICAL ASSOC
The authors examined the ability of Japanese monkeys (Macaca fuscata) to discriminate between sexes based on facial features. The shape and position of facial features (facial morphology) were measured to quantify the differences between sexes. The distance between the chin and nose was longer in males than females, and the outline of the face around the upper jaw and upper face differed between sexes. Using operant conditioning, 2 monkeys succeeded in discriminating sex based on facial pictures. Furthermore, they successfully generalized the discrimination to novel pictures of faces. Tests with morphed pictures of faces revealed that the monkeys used facial morphology to discriminate between males and females. Our results suggest that Japanese monkeys have sexual dimorphism in facial shape and they can use the morphological differences to discriminate conspecific sex.
- リンク情報
- ID情報
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- DOI : 10.1037/a0016219
- ISSN : 0735-7036
- Web of Science ID : WOS:000268963900012