Publicação
Comunicação Gestual de uma Amostra de Chimpanzés (Pan troglodytes) do Jardim Zoológico de Lisboa: Diferenças entre Classes Etárias e Sexos
| Resumo: | This study analysed the differences in gestural communication between age groups (non-adult vs. adult) and sexes (male vs. female) of a sample of 16 chimpanzees (Pan troglodytes) from Lisbon Zoo, in five parameters: communication frequency, functional context, gestural repertoire size, behavioural response obtainment, and communication success. Initially, data were collected through an ad libitum sampling to set up the gestural repertoire and, subsquently, a focal sampling was applied to collect data about the performance of each individual. Overall, 326 interactions were recorded which produced 27 different gestures. While no differences were found between sexes in any of the analysed parameters (p > 0.05), communication frequencies, the functional context, and the communication success differed between the age groups (p < 0.05). Differences between age groups probably reflect different social pressures affecting young and adults, and suggest flexibility in how they use the gestures, since they communicate with the most appropriate partners according to the functional context. Although adults are the most successful chimpanzees, the obtained results did not support some of the evidences predicted by the tunning repertoire hypothesis, because no differences were found in the gestural repertoire’s size or the use of the most effective gestures between non-adult and adultsIt is proposed that methodological mismatches and the influence of the captivity’s environment may be responsible for the differences highlighted. |
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| Autores principais: | Oliveira, Miguel Filipe da Silva |
| Assunto: | Grandes símios Gesto Pressões sociais Contexto funcional Êxito na comunicação Great ape gestures social pressures functional context communication success |
| Ano: | 2016 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade de Coimbra |
| Idioma: | português |
| Origem: | Estudo Geral - Universidade de Coimbra |
| Resumo: | This study analysed the differences in gestural communication between age groups (non-adult vs. adult) and sexes (male vs. female) of a sample of 16 chimpanzees (Pan troglodytes) from Lisbon Zoo, in five parameters: communication frequency, functional context, gestural repertoire size, behavioural response obtainment, and communication success. Initially, data were collected through an ad libitum sampling to set up the gestural repertoire and, subsquently, a focal sampling was applied to collect data about the performance of each individual. Overall, 326 interactions were recorded which produced 27 different gestures. While no differences were found between sexes in any of the analysed parameters (p > 0.05), communication frequencies, the functional context, and the communication success differed between the age groups (p < 0.05). Differences between age groups probably reflect different social pressures affecting young and adults, and suggest flexibility in how they use the gestures, since they communicate with the most appropriate partners according to the functional context. Although adults are the most successful chimpanzees, the obtained results did not support some of the evidences predicted by the tunning repertoire hypothesis, because no differences were found in the gestural repertoire’s size or the use of the most effective gestures between non-adult and adultsIt is proposed that methodological mismatches and the influence of the captivity’s environment may be responsible for the differences highlighted. |
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