Infanticide and Social Organization in the Redtail Monkey (Ceraopithecus ascanius schmidti) in the Kibale Forest, Uganda
- 12 January 1977
- journal article
- research article
- Published by Wiley in Zeitschrift Fur Tierpsychologie
- Vol. 45 (1) , 75-84
- https://doi.org/10.1111/j.1439-0310.1977.tb01009.x
Abstract
The redtail monkeys of the Kibale Forest, W. Uganda, live in social groups of about 35 members with only one adult ♂. In one of the study groups the harem ♂ was replaced by a new ♂ from outside the group. This ♂-replacement was followed by the new ♂ killing and eating two newborn infants in the group. Infants and young juveniles older than one month were not attacked. Following the infanticide the new ♂ copulated with several adult ♀♀ in the group. 8 months after this ♂ joined the group, 5 other adult and subadult ♂♂ associated with it. This multimale influx was accompanied by frequent and intense aggression among the ♂♂. Comparisons are made with the studies of langurs in India and Ceylon and it is suggested that infanticide following ♂-replacement in the harem affords reproductive advantages to the new ♂. Zusammenfassung Die Weißnasenmeerkatze (Cercopithecus ascanius schmidti) lebt in Gruppen von etwa 35 Individuen, die jedoch nur ein erwachsenes ♂ enthalten. Die Gruppen verteidigen Reviere. In einer Gruppe hielt das erwachsene ♂ seine Stellung 23 Monate lang, in einer anderen Gruppe gab es viele Wechsel; 4 Monate nach Beobachtungsbeginn wurde das Harems-♂ von einem neuen ♂ verdrängt. Der Neue tötete und fraß zwei Neugeborene, griff aber Kinder, die über 1 Monat alt waren, nicht an. Er kopulierte gleich nach der Übernahme mit erwachsenen ♀♀. Zwei Babies, die etwa 4,5 Monate später geboren wurden, ließ er unbehelligt, ebenso noch spéter geborene. 9 Monate spéter drangen 5 weitere geschlechtsreife ♀♀ in die Gruppe ein. Es gab viele Kémpfe zwischen den ♂♂, aber keine Angriffe auf vorhandene Neugeborene. Fälle von Babymord bei verschiedenen Languren-Arten werden vergleichend besprochen.This publication has 8 references indexed in Scilit:
- The Social Life of a Black‐and‐white Colobus Monkey,Colobus guerezaZeitschrift Fur Tierpsychologie, 1977
- Care and Exploitation of Nonhuman Primate Infants by Conspecifics Other Than the MotherAdvances in the Study of Behavior, 1976
- Male-Male Competition and Infanticide Among the Langurs (Presbytis Entellus) of Abu, RajasthanFolia Primatologica, 1974
- Adult Male Replacement in One-Male Troops of Purple-Faced Langurs (Presbytis senex senex) and its Effect on Population StructureFolia Primatologica, 1973
- A Comparison of Vocalizations of Red‐tailed Monkeys and Blue Monkeys, Cercopithecus ascanius and C. mitis, in Uganda1Zeitschrift Fur Tierpsychologie, 1973
- SOME ASPECTS OF SOCIAL CHANGES AND INFANT-KILLING IN THE HANUMAN LANGUR, PRESBYTIS ENTELLUS (PRIMATES : CERCOPITHECIDAE), IN WESTERN INDIAMammalia, 1971
- REPRODUCTIVE CYCLES OF TWO CERCOPITHECUS MONKEYSReproduction, 1970
- On the social change of hanuman langurs (Presbytis entellus) in their natural conditionPrimates, 1965