Effects of the menstrual cycle, social grouping, and exogenous progesterone on heterosexual interaction in laboratory housed stumptail macaques (M. arctoides)

Sexual Behavior of Group-Housed Stumptail Macaques (Macaca arctoides): Temporal, Demographic and Sociosexual Relationships

“…Slob et al [1978a], Slob and Nieuwenhuijsen [1980] and Linnankoski et al [1981] have suggested that very high rates of ejaculation may be elicited in test sit uations in which animals were repeatedly separated and reintroduced to each other. Hawkes [1969] and Bernstein [1980] have both noted that social introduction and réin troduction tend to produce high ejaculation rates in stumptails.…”

Individual copulatory preference and the “strange female effect” in a captive group-living male chimpanzee (Pan troglodytes)

“…This "strange female effect" does not appear to require absolute novelty, but seems only to require an undetermined time of absence. SLOB et al (1978) also reported that separation and reunion may stimulate copulation in the stumptail macaque. Considering that Sally was not observed to copulate during the period of data collection when she had already been housed with Pan for some time, but that she was immediately upon reintroduction after separation, suggests that intermittent removal from and reintroduction with males may increase the success of breeding colonies' efforts to maximize reproduction.…”

“…SAAYMAN (1970) and HAUSFATER (1975) described personal favoritism of males for particular females in feral baboons (Papio ursinus and Papio cynocephalus, respectively). SLOB, BAUM and SCHENCK (1978) reported partner preferences by male stumptail macaques (Macaca arctoides) housed with trios &females, a phenomenon which persisted after implantation of progesterone. SLOB et al (1978) pointed out that nonhormonal factors are related to the heterosexual interactions of this species of macaque.…”

“…SLOB, BAUM and SCHENCK (1978) reported partner preferences by male stumptail macaques (Macaca arctoides) housed with trios &females, a phenomenon which persisted after implantation of progesterone. SLOB et al (1978) pointed out that nonhormonal factors are related to the heterosexual interactions of this species of macaque.…”

Reproductive seasonality in a free-ranging troop of stumptail macaques (Macaca arctoides): A five-year report

“…The causes for the synchrony in fertile matings in this macaques are at the moment difficult to explain but recent research on the endocrine regulation of sexual behavior in this species by SLOB, BAUM and SCHENCK (1978), SLOB et al (1978) and SLOB, EOMS and VgEEBURG (1979) suggest that female sexual attractivity is less dependent upon ovarian hormones than in M. (1978) report that subcutaneous implantations of silastic capsules containing progesterone into the sexually most preferred female in their test groups had no effect on the males' sexual preferences and on the females' behavi our, including that of the non preferred females. These authors also found that male-female sexual and social behaviours do not fluctuate as a function of the females' menstrual cycle as has been found for other macaques and that ovariectomy causes only a partial decrement in the frequency of copulation, indicating that sexual behaviour in this species may be independent of hormonal influences.…”