A study of the relationship between the mating behaviour of the vole and the induction of ovulation and CL function is described. A single intromission or an injection of LH-RF constitute stimuli which induce ovulation, but normally give rise to CL that degenerate soon after formation. More prolonged mating, or mechanical stimulation of the vagina and cervix given after a separate ovulatory stimulus, result in the maintenance of the CL. Mechanical genital stimulation is effective in inducing CL maintenance when given up to 48 hr after an LH-RF injection. Similarities, therefore, are apparent between the vole, an induced ovulator, and spontaneous ovulators such as the rat, mouse and hamster.
If the inline PDF is not rendering correctly, you can download the PDF file here.