ADAPTATION OF SEXUAL ACTIVITY TO ENVIRONMENTAL STIMULATION

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Abstract
Fertility studies on albino mice were conducted under 3 conditions, a control room at 70-80[degree] F., a cold room at 60-68[degree] F., and a hot room at 88-92[degree] F. with a rel. humidity of 75%. When subjected to a warm, humid environment mice show a low fertility in 3 ways: a low % of matings that result in pregnancy, small litter size, and low viability of offspring. The mice of the cold room function best sexually, giving rise to many and large litters of lusty offspring in which the onset of maturity comes earlier than in the moist heat. Mice adapt poorly to a changeable environment, but they assume a normal fertility when relieved of the exhausting stimulation.

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