Effects of a circadian mutation on seasonality in Syrian hamsters (Mesocricetus auratus).

doi:10.1098/rspb.1998.0325

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Article

Effects of a circadian mutation on seasonality in Syrian hamsters (Mesocricetus auratus).

Proceedings. Biological sciences - 22 Mar 1998

Loudon A S, Ihara N, Menaker M

Abstract excerpt

In Syrian hamsters, exposure to short photoperiods or constant darkness induces a decrease in gonadotrophin secretion and gonadal regression. After 10-12 weeks, animals undergo spontaneous gonadal reactivation, gonadotrophin concentrations rise, and in males, testes size increases and spermatogen...

Topics

Analysis of Variance
Animals
Circadian Rhythm
Cricetinae
Darkness
Homozygote
Male
Mesocricetus
Mutation
Photoperiod
Regression Analysis
Seasons
Testis

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