Banca de DEFESA: GEANE RODRIGUES DE SOUZA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : GEANE RODRIGUES DE SOUZA
DATA : 27/10/2021
HORA: 14:00
LOCAL: webconferência
TÍTULO:

INDIVIDUAL VARIATION IN THE ADVERTISEMENT CALL OF SCINAX FUSCOMARGINATUS (LUTZ, 1925) (ANURA, HYLIDAE): AN ANALYSIS OVER THE YEARS AND OVER THE NIGHT

PALAVRAS-CHAVES:

Advertisement call, behavior, individual-recognition, sexual-selection

PÁGINAS: 35
GRANDE ÁREA: Ciências Biológicas
ÁREA: Zoologia
SUBÁREA: Comportamento Animal
RESUMO:

For Anurans, vocalizations are strictly important, commonly produced during the breeding season, they are one of the main forms of communication for the group and are used mainly to attract reproductive partners and defend territories. This can serve as a basis for understanding behavioral mechanisms such as individual recognition, sexual selection and energy expenditure of individuals. We analyzed which factors influence the variation of the acoustic parameters, at intra-individual and inter-individual levels of a population of Scinax fuscomarginatus. We assessed the acoustic characteristics of 101 individuals' ad calls over six breeding seasons. We identified that all the acoustic parameters of the announcement song can be used for individual recognition, with the maximum frequency being the most prominent. Both the body condition of the individuals, the temperature of the environment and the reproductive seasons (Time) influenced the acoustic vestments of the advertising corners. We observed that, with the exception of Maximum frequency, all other acoustic parameters were influenced by the ambient temperature negatively (duration of the singing, number of pulses, dominant frequency, minimum frequency) and positively (pulse rate, singing rate). This study provides data on the variation of acoustic characteristics in the species and on these results, we discuss its implications for the evolution of the signal, choice of partner, for taxonomic purposes and function and mechanisms of acoustic communication. We conclude that the high variation can be important for the process of choosing a partner, and sexual selection. As they are less invasive, these study methods can be useful for conservation purposes, as they provide essential information about the population without direct impact.

MEMBROS DA BANCA:
Presidente - 014.459.411-04 - ALESSANDRO RIBEIRO DE MORAIS - UFG
Interno - 005.506.021-86 - FABRÍCIUS MAIA CHAVES BICALHO DOMINGOS - NENHUMA
Externo à Instituição - FÁBIO HEPP SILVA FERNANDES DOS SANTOS - UFRJ