Abstract
(1) The influence of short-term (ST) or long-term (LT) olfactory bulb removal on sexual receptivity was studied in 3- to 4-month old 4-day cyclic female Wistar rats. (2) When performed 8 days before mating sessions (ST), complete bulbectomy increased the number of receptive females at 18.00–19.00 hr on proestrus with respect to anterior, lateral or sham bulbectomy. (3) No increase in the number of receptive females was observed in ST complete bulbectomized females mated at 22.30–23.30 hr during the night following proestrus. (4) A higher lordosis quotient was noted in ST complete and anterior bulbectomized females than in ST lateral and sham bulbectomized females. (5) When performed at 6 weeks of age, LT complete bulbectomy did not affect either the number of receptive females or the lordosis quotient in females mated at 18.00–19.00 hr on proestrus. (6) It was concluded that the olfactory bulbs might control the timing of sexual receptivity and the lordosis quotient in the rat. The mechanisms involved are discussed in the light of previous and present observations.
Published Version
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