Abstract
Abstract. Background: Pheromones are responsible for sexual and social behavior among members of the same species. In this research, the goal was to examine the changes of testosterone plasma levels in male Wistar rats that have been faced with sexual behavior and pheromones of ovariectomized female .Materials and Methods: In this experimental-interventional study 48 rats were divided into three groups (control , experimental 1and 2), each group contained 8 male and 8 female. After 24 hour, control and experimental 1 groups remained in their cages; but male rats in experimental 2 group, were separated from their pregnant pair and as strange male rat were placed in the neighborhood with another female pregnant of the same group in the special cages that just moved volatile pheromonesof female to male. (Experimental 1, 2 groups female rats, 17th day postpartum were ovariectomized). In the first day from control group mail rats and10th day of pregnancy, 14th and 24th days of postpartum, blood samples were collected from all male rats. Data based on editing 19 SPSS statistical program and one-way ANOVA statistical methods were analyzed. The significance level For results (P≥0.05) significant was considered. Results:. The testosterone plasma levels had significant decrease among experimental 1, 2 groups male rats in 24th day of postpartum. Conclusion: These findings suggest that female rats non-volatile pheromone's (when the ovaries are active) can stimulate sexual behavior in male rats.Keywords: ovariectomy, rat, sexual pheromones, sexual behaviors, testosterone.
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