Phenotypic variation in seasonal adjustments of testis size, body weight, and food intake in deer mice: role of pineal function and ambient temperature.

Abstract excerpt

We investigated pineal function as well as reproductive and energetic characteristics in male deer mice (Peromyscus maniculatus) that differentially respond to short photoperiod with full, partial or no gonadal regression. In mice at both high (23 degrees C) and low temperature (1 degree C), these phenotypic differences in reproductive responses to short days were not reflected by differences in urinary excretion...

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