Banca de DEFESA: EHIKO JERELHIN RIOS ALVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : EHIKO JERELHIN RIOS ALVA
DATA : 22/01/2020
HORA: 09:00
LOCAL: Salão Nobre do Instituto de Biologia da UFBA
TÍTULO:

Macroecology of the advertisement call of monkey tree frogs (Anura: Phyllomedusidae)

PALAVRAS-CHAVES:

Bioacustic, Macroevolution, Spatial distribution, Vocalization, Phylogenetic signal

PÁGINAS: 32
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
RESUMO:

Studies over the past few decades have provided a considerable amount of information on anuran vocalization, which in turn has expanded our knowledge of how this key trait is influenced by environmental factors, morphological characteristics, and biotic interactions. However, while a large body of work has been dedicated to understanding drivers of intraspecific calling variation in anurans, few studies have investigated general biogeographic and evolutionary patterns of acoustic differences among species. Here, we describe the spatial and phylogenetic patterns in the vocalization of the monkey tree frogs (Phyllomedusidae) and examine the factors that drive these patterns. We first measured the spatial and phylogenetic signal on acoustic parameters: call duration, dominant frequency, and number of pulses. Contrary to expectations, our results showed no spatial or phylogenetic autocorrelation, indicating an absence of niche conservatism along Phylomedusidae acoustic evolution, as well as a lack of spatial structure on calling parameters. We used multiple linear regression to test whether body size, temperature, and precipitation could affect the acoustic parameters. The results from this analysis showed a negative relationship between body size and dominant frequency, consistent with the allometric pattern found for other anurans and vertebrates. The results also indicate a positive effect of the temperature on the number of pulses emitted by the species, which could be explained by higher metabolic rates found in warmer regions. Taken together, the results of this work point out to rapid evolution and modification of Phyllomedusidae singing-related characteristics, leaving no spatial or phylogenetic signal, but at the same time restricted by endogenous (body size) and exogenous (temperature) factors.

MEMBROS DA BANCA:
Presidente - 3062840 - BRUNO VILELA DE MORAES E SILVA
Interno - 1576452 - RICARDO DOBROVOLSKI
Externo à Instituição - SIDNEY FEITOSA GOUVEIA - UFS