Effect of copulation on the hypothalamic content of gonadotrophic hormone releasing hormone in the vole, Microtus agrestis

Abstract

There was a drop of 56% in the hypothalamic content of Gn-RH in female voles 5 min after mating compared with that in unmated but receptive animals. This suggests that the surge of LH in vole plasma associated with reflex ovulation is evoked by a massive release of Gn-RH.