Banca de DEFESA: RICARDO JOSE VIANA DE CARVALHO
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.STUDENT : RICARDO JOSE VIANA DE CARVALHO
DATE: 20/01/2025
TIME: 14:00
LOCAL: https://meet.google.com/ukk-ziic-dqs
TITLE:
Investigation of the longitudinal dynamics of the vocalization of marmosets (Callithrix jacchus)
KEY WORDS:
Investigation of the longitudinal dynamics of the vocalization of marmosets (Callithrix jacchus)
PAGES: 42
BIG AREA: Ciências Biológicas
AREA: Fisiologia
SUMMARY:
There are currently around 7,000 languages spoken around the world, many of which are so distinct that efficient communication between different groups is difficult. The massive migration of individuals, the occupation of varied ecological niches, geographical isolation between communities, vocal plasticity and prosociality are considered fundamental factors for linguistic diversity in humanity. If this hypothesis is correct, we might expect that other species exhibiting similar characteristics would also show a diversity in communication structure, i.e. have dialects. Marmosets (Callithrix jacchus) have explored different ecological niches, demonstrate vocal plasticity and are among the few primate species recognized for their pro-sociability. In this project, we investigated possible vocal differences between two wild groups of marmosets (Callithrix jacchus), called Água and Bosque, which are free-living animals in the Açú National Forest and do not interact with each other. We used passive acoustic recording methods, with recorders attached to resting and sleeping trees, minimizing direct interaction with the animals and allowing us to capture vocalizations over a year. Our data show that temperature influences the duration of the groups' vocalizations throughout the year, the seasons and the day, so that at higher temperatures, the animals decrease the duration of their vocalizations, adopting an energy conservation strategy. However, when comparing the duration of vocalizations between the groups, there was no statistically significant difference throughout the year, nor between the dry and rainy seasons. Thus, it can be concluded that the two groups of marmosets (Callithrix jacchus) show vocal similarities, resulting in similar vocalizations during the year.
COMMITTEE MEMBERS:
Externa à Instituição - ADELAIDE HERCÍLIA PESCATORI SILVA - UFPR
Externo ao Programa - 1149552 - ARRILTON ARAUJO DE SOUZA - nullPresidente - 3086031 - DANIEL YASUMASA TAKAHASHI