Effects of ejaculation on sexual behavior in the male rat


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Abstract

Male rats commonly rest several minutes after their 1st ejaculation (E1) before beginning activity leading to a 2nd (E2). These pauses were varied experimentally by removing the female for periods ranging from 15 min. to over 7 hr., then replacing her and allowing mating to continue. After short periods the number of intromissions leading to E2 was low, but with periods as long as 90 min. it took as many intromissions to E2 as to E1. The delay before mating began was also reduced by the shorter rest periods, increasing with length of interval. The average delay between intromissions was reduced by the enforced rests for periods as long as 5 hr. Interpretations in terms of 2 hypothetical physiological mechanisms are offered. From Psyc Abstracts 36:01:1EF49B. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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