The development of affiliative and coercive reproductive tactics in male chimpanzees.
Proc Biol Sci
; 288(1942): 20202679, 2021 01 13.
Article
de En
| MEDLINE
| ID: mdl-33402074
ABSTRACT
Like many animals, adult male chimpanzees often compete for a limited number of mates. They fight other males as they strive for status that confers reproductive benefits and use aggression to coerce females to mate with them. Nevertheless, small-bodied, socially immature adolescent male chimpanzees, who cannot compete with older males for status nor intimidate females, father offspring. We investigated how they do so through a study of adolescent and young adult males at Ngogo in Kibale National Park, Uganda. Adolescent males mated with nulliparous females and reproduced primarily with these first-time mothers, who are not preferred as mating partners by older males. Two other factors, affiliation and aggression, also influenced mating success. Specifically, the strength of affiliative bonds that males formed with females and the amount of aggression males directed toward females predicted male mating success. The effect of male aggression toward females on mating success increased as males aged, especially when they directed it toward females with whom they shared affiliative bonds. These results mirror sexual coercion in humans, which occurs most often between males and females involved in close, affiliative relationships.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Pan troglodytes
/
Coercition
Type d'étude:
Prognostic_studies
Limites:
Adolescent
/
Animals
/
Female
/
Humans
/
Male
Pays/Région comme sujet:
Africa
Langue:
En
Journal:
Proc Biol Sci
Sujet du journal:
BIOLOGIA
Année:
2021
Type de document:
Article
Pays d'affiliation:
États-Unis d'Amérique