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Sex Assessment in the Lengths of Metacarpals and Metatarsals of Macaca mulutta Living in the Taihang Mountains

ZHAO Xiao-jin,ZHAO Jun-jie,WANG Geng,MA Jing,LIU Yu(College of Life Sciences,Henan Normal University,Xinxiang 453007)  
This paper analyzes sexual differences in metacarpal(N=24)and metatarsal(N=26)length in adult Macaca mulutta,using one-way ANOVA and multi-variable discriminant function analysis(SPSS 13.0 for Windows).The results indicate that all of the metacarpal and metatarsal lengths show a significant difference between the sexes(P0.00).The order of average metacarpal length is different between the two sides of the body with the different sexes,but that difference is not significant(P0.05).Using SPSS,the established discriminant functions based on the lengths of metacarpals and metatarsals uses two methods:enter independents together and stepwise.To distinguish between the sexes using the metacarpals gives accuracies of 91.7%(enter independents together)and 93.8%(stepwise method).If both methods are applied the accuracy for metatarsals is 84.6%.This paper has demonstrated that the sex of Macaca mulutta can be identified by assessing discriminant functions based on metacarpal and metatarsal lengths.
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