Social inhibition of sexual maturation in male prairie deer mice

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Abstract

Five experiments demonstrated that the sexual maturation of male prairie deer mice (Peromyscus maniculatus bairdii) (n = 334) that were reared with other males was inhibited in comparison with that of males reared in isolation. Inhibition occurred in males reared with 9 or 4 males of the same age, as well as in those housed with 1 adult male. This phenomenon was observed after several periods of grouping, and consequently at several ages ranging from 5 wks to 4 mo. Females did not retard the sexual development of males. Results indicate that the sexual maturation of individual deer mice is modulated by the specific composition, rather than density, of the local group. (28 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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