BIOL 178 Lecture Notes - Lecture 12: Whitten Effect, Estrous Cycle, Pheromone
6 Mar 2020
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Document Summary
How are female reproductive cycles and sexual behavior influenced by the. Social influences on reproductive cycle in mice: the lee-boot effect, group female mice 4 per cage (no males) . Extended estrous cycles (pseudopregnancy: the whitten effect, group female mice > 20 per cage (no males) . Introduce male or male odor : synchronized ovulation after 3-4 days, the bruce effect, expose pregnant mouse to unfamiliar male for >48 hours. Female aborts ot resorbs fetuses: female mates with new male 3-6 days later. Stimulates gnrh, lh and estrogen secretion in recipient: Inhibits gnrh, lh and estrogen secretion in recipient. Social influences on menstrual cycles in women: menstrual synchrony, roommates living together, close friends, related women living together, found by mcclintock, not found in most subsequent studies, normalization of cycles by males, male axillary secretions . Normalize cycle length in women with irregular cycles.
