Hormones and sexual behavior associated with postconception perineal swelling in the sooty mangabey (Cercocebus torquatus atys)
- 93 Downloads
Three studies were conducted with female sooty mangabeys to describe the occurrence of perineal swelling during pregnancy and to document the associated patterns of ovarian hormone secretion and sexual behavior. Menstrual cycles and pregnancies were charted in 29 female subjects by recording daily vaginal bleeding and perineal swelling. As in other swelling species, maximum perineal tumescence corresponded with the periovulatory phase of the cycle; however, a second tumescence was recorded during pregnancy, with a peak at 49 days postconception. The swelling patterns were similar with the exception that deturgescence was slower during pregnancy. In a second study, blood samples were obtained weekly from nine females to document the estradiol (E2) and progesterone (P4) profiles during pregnancy. Analyses revealed increased E2 concentrations and low P4 levels in association with the postconception swelling. A third study compared sexual behavior during ovulatory and post-conception tumescent peaks. Behavioral data revealed that, although there was no overall difference in male mount rate to females during the ovulatory and postconception maximum swelling period, when only the alpha male was considered, significantly fewer mounts were directed to females exhibiting a post-conception versus an ovulatory maximum tumescence.
Key wordsCercocebus swelling cycles postconception estrus sexual behavior ovarian hormones
Unable to display preview. Download preview PDF.
- Atkinson, L. E., Hotchkiss, J., Fritz, G. R., Surve, A. H., Neill, J. D., and Knobil, E. (1975). Circulating levels of steroids and chorionic gonadotropin during pregnancy in the rhesus monkey with special attention to the rescue of the corpus luteum in early pregnancy.Biol. Reprod. 12: 335–345.PubMedCrossRefGoogle Scholar
- Bernstein, I. S. (1971b). Agonistic behavior during group formation and intergroup interactions in sooty mangabeys (Cercocebus atys).Symp. 3rd Congr. Int. Primatol. Soc. 3: 66–70.Google Scholar
- Hess, J. P. (1973). Some observations on the sexual behaviour of captive lowland gorillas,Gorilla g. gorilla (Savage and Wyman) In Michael, R. P., and Crook, J. H. (eds.),Comparative Ecology and Behaviour of Primates, Academic Press New York, pp. 508–581.Google Scholar
- Homewood, K. M. (1975). Monkey on a riverbank.Nat. Hist. 84: 68–73.Google Scholar
- Napier, J. R., and Napier, P. H. (1967).Handbook of Living Primates, Academic Press, London.Google Scholar
- Schwartz, E. (1928). The species of the genus Cercocebus.Ann. Mag. Nat. Hist. (London) 10: 664–670.Google Scholar
- Struhsaker, T. T. (1971). Notes onCercocebus atys atys in Senegal, West Africa.Mammalia 35: 343–344.Google Scholar
- Taub, D. M. (1980). Female choice and mating strategies among wild Barbary macaques (Macaca sylvanus L). In Lindburg, D. G. (ed)The Macaques: Studies in Ecology, Behavior, and Evolution, Van Nostrand Reinhold, New York, pp. 287–344.Google Scholar
- Wislocki, G. B., and Hartman, C. G. (1929). On the placentation of a macaque (Macaca rhesus) with observations on the origin of the blood constituting the placental sign.Bull. Johns Hopkins Hosp. XLIV: 166–185.Google Scholar