Abstract

In vitro study of testosterone (T) metabolism shows that formation of 17β-oestradiol (E 2) in the preoptic area is higher in male doves exposed to behavioural stimuli from interacting pairs than in visually isolated males or males that have interacted with females. Formation of 5α-dihydrotestosterone, 5β-dihydrotestosterone and 5β-androstane-3α,17β-diol was similar in all groups, indicating that exposure to stimuli from interacting pairs influences aromatization of T and not other pathways of androgen metabolism. The results suggests that sexual stimuli, which do not involve tactile cotact between male and female, affect local E 2 formation in the brain.

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