Vol. 27 (1-2) 2006 Neuro endocrinology letters

Influence of perineal swellings on behavior and stress reaction in levonorgestrel implanted Macaca sylvanus females.

OBJECTIVES: Contraceptives are common tools in controlling the reproductive physiology in primates. Levonorgestrel, a synthetic gestagen, can usually enable contraception and does not suppress the extension of perineal swellings.

SETTING: This study investigated the effects on intra-sexual behavior and fecal cort.....