Banca de QUALIFICAÇÃO: LUANE MARIA STAMATTO FERREIRA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : LUANE MARIA STAMATTO FERREIRA
DATA : 29/05/2017
HORA: 14:00
LOCAL: Anfiteatro das Aves
TÍTULO:

Chatting with the Wolf: what does bioacoustics reveals about the behavior of the maned wolf (Chrysocyon brachyurus)

PALAVRAS-CHAVES:

Chrysocyon brachyurus, roar-bark, propagation, playback, passive acoustic monitoring, vocal identity.

PÁGINAS: 108
GRANDE ÁREA: Ciências Humanas
ÁREA: Psicologia
RESUMO:

The maned Wolf is an elusive nocturnal/crepuscular canid that shares its large home range with the mated partner yet only physically interacting in the breeding season. Despite being considered solitary the species uses long range vocalizations – the roar-bark – to communicate with the partner and other conspecifics in a regular basis. The objective of the present work was to investigate the acoustic communication of maned wolves to elucidate their social behavior. Propagation experiments in Serra da Canastra Brazilian National Park - MG/BR indicates that animals elevate their head during roar-bark emission to enhance propagation reach, at least in some terrains, and that this signal is adapted to better propagate in its natural environment, which is in accordance with the acoustic adaptation hypothesis (AAH). Time windows of better experimental roar-bark propagation are not the most used by the species to vocalize indicating other factors as lower background noise and social factors influence the temporal pattern of vocal activity. Free-ranging animals vocalized and approached simultaneous and coordinately in response to playback, revealing a higher interaction degree than imagined. The comparison of simultaneous records from multiple autonomous recorders deployed at the same park as long as results from the propagation experiment showed several acoustic parameters stable through their long range propagation and it was possible to discriminate sex and identity of captivity animals with those parameters (90% to 100% success). The acoustic parameters of the roar-bark lower frequency band were alone able to discriminate the caller sex and some evidence was found that the frequency band immediately above is important to identity discrimination. However, when the discriminating functions were applied in the natural recordings data set and in the experimentally propagated data set their performance was not reliable. Investigation of temporal and spatial vocalization patterns as long as new methodologies for identity and sex discrimination will be used to allow the acoustic monitoring of this species and clarify its social behavior.

MEMBROS DA BANCA:
Externo ao Programa - 1753234 - GUSTAVO ZAMPIER DOS SANTOS LIMA
Externo ao Programa - 1439088 - MAURO PICHORIM
Presidente - 1863735 - RENATA SANTORO DE SOUSA LIMA MOBLEY