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Sexual dimorphism in the pelves of African lorises

✍ Scribed by Walter Leutenegger

Publisher: John Wiley and Sons
Year: 1973
Tongue: English
Weight: 313 KB
Volume: 38
Category: Article
ISSN: 0002-9483
DOI: 10.1002/ajpa.1330380218

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✦ Synopsis

Abstract

The present study is the first describing sexual dimorphism in the pelves of prosimian primates. Various measurements and indices indicate that there is no significant sexual dimorphism in the pelves of African lorises (Perodicticus potto and Arctocebus calabarensis). The lack of even a moderate degree of sexual dimorphism can be interpreted as the result of a lack of marked sexual differences in body size and of absence of selective pressure for expansion of the birth canal, the latter due to the small size of the fetus at term in relation to the dimensions of the female pelvic inlet.

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