Abstract
Abstract The hypothesis that prior sexual experience and/or adrenal hormones might be necessary for the mating behavior which persists for some time following castration in the male rat was considered in two experiments. First, the postcastration behavior of animals which had no heterosexual experience before castration was compared with that of others which had repeated preoperative mating experience. During 5–7 weeks of postoperative testing, no significant difference in any of the elements of the copulatory pattern was found between the two groups. In the second experiment, male rats were tested before and after each of the following treatments: adrenalectomy or sham adrenalectomy, then castration, and then testosterone treatment. No significant difference in any aspect of sexual behavior was found between the adrenalectomized and sham operated subjects. Decreases in intromission frequency followed surgery and cessation of the testosterone treatment in both groups. Neither prior sexual experience nor adrenal hormones appear to be involved in the “maintenance” of mating behavior following castration.
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