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The development of affiliative and coercive reproductive tactics in male chimpanzees.
Reddy, Rachna B; Langergraber, Kevin E; Sandel, Aaron A; Vigilant, Linda; Mitani, John C.
Affiliation
  • Reddy RB; Department of Human Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA.
  • Langergraber KE; Department of Anthropology, University of Michigan, Ann Arbor, MI 48109, USA.
  • Sandel AA; School of Human Evolution and Social Change, Arizona State University, Tempe, AZ 85281, USA.
  • Vigilant L; Institute of Human Origins, Arizona State University, Tempe, AZ 85281, USA.
  • Mitani JC; Department of Anthropology, University of Texas at Austin, Austin, TX 78712, USA.
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.
Sujet(s)
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

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
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