title: Social shaping of voices does not impair phenotype matching of kinship in mandrills.
abstract: Kin selection theory provides a strong theoretical framework to explain the evolution of altruism and cooperative behaviour among genetically related individuals. However, the proximate mechanisms underlying kin discrimination, a necessary process to express kin-related behaviour, remain poorly known. In particular, no study has yet unambiguously disentangled mechanisms based on learned familiarity from true phenotype matching in kin discrimination based on vocal signals. Here we show that in addition to genetic background, social accommodation also shapes individual voices in an Old World monkey (Mandrillus sphinx), even though primate vocalizations were thought to be innate and little flexible. Nonetheless, social shaping of voice parameters does not impair kin discrimination through phenotype-matching of unknown relatives, revealing unexpected discriminatory versatility despite signal complexity. Accurate signal production and perception, therefore, provide a basis for kin identification and kin-biased behaviour in an Old World primate.
authors.affiliation: Université de Lyon/Saint-Etienne, Equipe Neuro-Ethologie Sensorielle, Neuro-PSI, CNRS UMR 9197, Saint-Etienne 42023, France.
authors.forename: F
authors.initials: F
authors.lastname: Levréro
authors.affiliation: 1] Université de Lyon/Saint-Etienne, Equipe Neuro-Ethologie Sensorielle, Neuro-PSI, CNRS UMR 9197, Saint-Etienne 42023, France [2] CEFE UMR5175, CNRS-Université de Montpellier II-Université Paul-Valéry Montpellier-EPHE, Montpellier 34293, France.
authors.forename: G
authors.initials: G
authors.lastname: Carrete-Vega
authors.affiliation: CIRMF, Centre de Primatologie, Franceville, Gabon.
authors.forename: A
authors.initials: A
authors.lastname: Herbert
authors.affiliation: CIRMF, Centre de Primatologie, Franceville, Gabon.
authors.forename: I
authors.initials: I
authors.lastname: Lawabi
authors.affiliation: Department of Evolutionary Genetics, IZW, Berlin 10315, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Courtiol
authors.affiliation: SODEPAL, Bakoumba, Gabon.
authors.forename: E
authors.initials: E
authors.lastname: Willaume
authors.affiliation: Behavioral Ecology and Sociobiology Unit, German Primate Center (DPZ), Göttingen 37077, Germany.
authors.forename: P M
authors.initials: PM
authors.lastname: Kappeler
authors.affiliation: CEFE UMR5175, CNRS-Université de Montpellier II-Université Paul-Valéry Montpellier-EPHE, Montpellier 34293, France.
authors.forename: M J E
authors.initials: MJ
authors.lastname: Charpentier
mesh_terms: D000162:Acoustics; D000533:Altruism; D000818:Animals; D001522:Behavior, Animal; D003299:Cooperative Behavior; D005681:Gabon; D048528:Mandrillus; D010641:Phenotype; D021641:Recognition, Psychology; D012919:Social Behavior; D012938:Social Perception; D014828:Vocalization, Animal / Q000502:physiology*