Socio-genetic correlates of unbiased sex dispersal in a population of black capuchin monkeys (Sapajus nigritus)

Autor(es)

Tokuda, Marcos ^{[1, 2]} ; Martins, Milene M. ^[3] ; Izar, Patricia ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Psicol Expt, Sao Paulo - Brazil

^[2] Parque Zool Municipal Quinzinho Barros, Rua Teodoro Kaisel 883, BR-18020268 Sorocaba, SP - Brazil

^[3] Univ Santo Amaro, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ACTA ETHOLOGICA; v. 21, n. 1, p. 1-11, FEB 2018.
• Citações Web of Science: 0

Resumo

Most social mammal species exhibit male-biased dispersal. Sex bias in dispersal leads to a higher degree of relatedness among individuals of the philopatric sex, thus an atypical dispersal pattern might lead to deviations in the typical within-group kinship structure. Kinship, in turn, influences patterns of social interactions, as widely evident by kin-biased behaviors. We investigated the link between dispersal, relatedness structure, and sociopositive interactions established by adult females of black capuchin monkeys (Sapajus nigritus) living in a population that experiences female dispersal, an unusual pattern for capuchin monkeys. The study was conducted in Parque Estadual Carlos Botelho (PECB), within the Brazilian Atlantic Forest. We addressed dispersal and relatedness patterns by genotyping 20 adults of 3 groups across 9 microsatellite loci. We also sampled the monkeys' behavior and compared spatial association frequencies and rates of grooming among same- and opposite-sex dyads. There was no difference between males and females in genetic parameters; both males and females show low coefficients of relatedness indicating that neither sex is consistently philopatric. The mean pairwise coefficient of relatedness for co-resident females was not higher than that for co-resident males. Compared to other populations of capuchin monkeys, female bond was weak, as evident by lower spatial association frequencies, reduced rates of grooming and lack of correlation between coefficients of relatedness and measures of dyadic sociopositive interactions. Our findings thus confirm that female dispersal is a habitual process in the capuchin population of PECB, and that, as expected, dispersal by females strongly influences the relatedness structure of the population as well as the affiliative relationships among female groupmates. (AU)

• Processo FAPESP: 09/50182-2 - Dispersao e estrutura social de macacos-prego (sapajus nigritus) no parque estadual carlos botelho, sao paulo.
• Beneficiário: Marcos Tokuda
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 09/51589-9 - Estrutura social, sistema de acasalamento e padrões de dispersão sexual de uma população selvagem de macacos-prego (Cebus nigritus), no Parque Estadual Carlos Botelho/PECB, São Paulo
• Beneficiário: Patrícia Izar Mauro
• Modalidade de apoio: Auxílio à Pesquisa - Regular