The Effect of Chronic Ethanol Consumption on Sexual Motivation and Behavior of Adult Male Wistar Rats in the Copulatory Phase.

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BACKGROUND: The interaction of ethanol consumption and sexual behavior has been evaluated over the past three decades; however, some studies have assessed how ethanol consumption affects the general behavioral aspects of the copulatory cycle patterns in male rats. The aim of this study was to investigate the effect of chronic ethanol consumption on adult male Wistar rats' sexual motivation and behavior alteration in pre-copulatory, copulatory, and executive phases of the copulatory cycle. METHODS: Male Wistar rats were randomly allocated to two groups (control and ethanol treated groups). After 42 days of treatment, male rats were given access to adult female rats for 2 hours and their sexual behavior were recorded in a fully dark room using an infrared camera. FINDINGS: Chronic ethanol consumption caused a significant increase in anogenital sniffing and mounting, intermission, and ejaculation latencies periods, as well as a significant decrease in the sexual activity index (SAI) and copulatory efficiency (CE) compared to the control group. CONCLUSION: It is suggested that chronic ethanol consumption suppresses sexual behavior and reduces male rats' tendency toward sexual interaction with female rats as manifested by the enhanced latency periods in the copulatory phases and reduced SAI of ethanol treated animals.

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