O ir e vir da gente, coesão de grupo de macacos-prego-galegos (Sapajus flavius)
The intensity of intra-group food competition and the need to use areas of greater potential risk are forces that, in interaction, generate and shape the sociality of primates, being important predictors of group size, cohesion and inter-individual proximity. This study analyzed the spatial cohes...
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| Formato: | Dissertação |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/54368 |
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| Resumo: | The intensity of intra-group food competition and the need to use areas of greater potential risk
are forces that, in interaction, generate and shape the sociality of primates, being important
predictors of group size, cohesion and inter-individual proximity. This study analyzed the
spatial cohesion of a group of capuchin monkeys (Sapajus flavius) in an Atlantic Forest
fragment in a secondary stage of regeneration on the border between the states of Paraíba and
Pernambuco. We were in contact with the group for 352 hours and obtained 591 scans that
contained the spatial position of each individual. We tested whether the productivity of the
home range and the use of the area with the highest potential risk interfere with group size,
cohesion and greater inter-individual proximity. Greater fruit availability was related to smaller
groups, less cohesion and greater distance from the centroid while higher insect productivity
explained greater cohesion and larger groups. The use of areas of greater potential risk (ground,
proximity to the edge, stage of regeneration of the area used) explained the greater cohesion,
larger groups and greater proximity to the centroid. Juveniles were closer to the centroid and
males were more peripheral, when juveniles were on the ground they approached females and
males approached subadults. The pattern found indicates an indirect competition system
characterized by greater distance when there was greater availability of fruits, differential
location in spatial formation of the group (centroid-periphery) and the differential use of tree
strata. While larger, more cohesive groups allowed the group to access substitute resources in
areas of greater potential risk, during periods of lower fruit supply. |
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