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Title: Talon cusp expression in Cayo Santiago rhesus macaques ( Macaca mulatta )
Abstract ObjectivesThis brief communication documents the prevalence of maxillary central incisor talon cusps in Cayo Santiago rhesus monkeys (Macaca mulatta) and assesses whether talon cusp presence occurs at equivalent frequencies across matrilines. Materials and MethodsThe data on cusp presence vs. absence were analyzed by logistic regression in 170 monkeys (82 females, 78 males) from seven different matrilines. Sample sizes per matriline ranged from 10 to 42. Observations of talon cusps were blind with respect to matriline and sex. ResultsTalon cusps were present in 9.4% of the sample. By matriline, cusp frequencies ranged from 0%—Matrilines 073 and 106%—to 19.1% in Matriline 076. The frequency of the talon cusp in Matriline 076 was significantly greater than the frequency of the cusp in the remainder of the sample. There was no statistically significant difference in the frequency of the talon cusp by sex. ConclusionsThis study suggests that the talon cusp in rhesus monkeys, as in humans and baboons, is a rare trait. Elevated prevalence of the talon cusp in Matriline 076 suggests the possibility of a genetic influence on talon cusp expression.  more » « less
Award ID(s):
1926601
PAR ID:
10536816
Author(s) / Creator(s):
; ; ; ; ; ;
Corporate Creator(s):
Editor(s):
Turner, Trudy
Publisher / Repository:
John Wiley & Sons
Date Published:
Journal Name:
American Journal of Biological Anthropology
Volume:
183
Issue:
1
ISSN:
2692-7691
Page Range / eLocation ID:
172 to 177
Subject(s) / Keyword(s):
dental incisors morphogenesis morphology teeth
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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