title: Intragroup lethal aggression in wild spider monkeys.
abstract: We report the first evidence of intragroup coalitionary aggression leading to the death of a wild young adult male spider monkey. During a long-term study of a well-habituated community at the Otoch Ma'ax Yetel Kooh reserve in Yucatan, Mexico, a young adult male sustained severe injuries repeatedly between January and March 2002. On 1 April 2002 the same male was the victim of an intragroup attack by at least one adult male that resulted in his death. We highlight several causes of intragroup aggression that may account for the killing.
authors.affiliation: School of Psychology, University of St. Andrews, St. Andrews, Fife, Scotland.
authors.forename: Alejandra
authors.initials: A
authors.lastname: Valero
authors.forename: Colleen M
authors.initials: CM
authors.lastname: Schaffner
authors.forename: Laura G
authors.initials: LG
authors.lastname: Vick
authors.forename: Filippo
authors.initials: F
authors.lastname: Aureli
authors.forename: Gabriel
authors.initials: G
authors.lastname: Ramos-Fernandez
mesh_terms: D000374:Aggression; D000818:Animals; D001522:Behavior, Animal; D002427:Cebidae / Q000502:physiology*; D003163:Competitive Behavior; D005260:Female; D008297:Male