Artigo

Sexual signals of the Amazonian frog Allobates paleovarzensis: Geographic variation and stereotypy of acoustic traits

Because of its close relationship with the process of evolutionary differentiation, it is expected that geographic variability in acoustic sexual traits should be greater among than within populations. This is particularly expected in organisms with typically high population genetic structure and lo...

ver descrição completa

Autor principal: Kaefer, Igor L.
Outros Autores: Lima, Albertina Pimental
Grau: Artigo
Idioma: English
Publicado em: Behaviour 2020
Assuntos:
Amphibia
Anura
Epipedobates
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/18058
id oai:repositorio:1-18058
recordtype dspace
spelling oai:repositorio:1-18058 Sexual signals of the Amazonian frog Allobates paleovarzensis: Geographic variation and stereotypy of acoustic traits Kaefer, Igor L. Lima, Albertina Pimental Amphibia Anura Epipedobates Because of its close relationship with the process of evolutionary differentiation, it is expected that geographic variability in acoustic sexual traits should be greater among than within populations. This is particularly expected in organisms with typically high population genetic structure and low dispersal abilities, such as anuran amphibians. We studied the acoustic traits of the advertisement call in the small-sized dendrobatoid frog Allobates paleovarzensis through its range in Central Amazonia. We accessed the variability of call traits from the within-male to the among-population levels, and evaluated the degree of stereotypy of the call characteristics. Call variability had comparable magnitudes within and among populations, and was independent of the degree of stereotypy of call measurements. Therefore, none of the call traits stood out as a potential cue for discrimination between populations. Spectral call measurements were static and strongly related with body size, which explained between 30 and 35% of the variation of these acoustic traits. Temporal characters of the notes were dynamic and influenced by environmental temperature (e.g., 27% of note rate variation), whilst temporal measurements of the entire calls were not related to the co-factors analysed. Both spectral and temporal call traits varied among populations and between sides of the Amazon River. Our results also indicate that body size and sampling site jointly affected the variability of the call traits. However, geographic distances among populations and the river barrier had no significant effect on the overall acoustic variation, indicating that local stabilising selective forces may be important in the process of call differentiation. © 2012 Koninklijke Brill NV, Leiden. 2020-06-15T21:51:18Z 2020-06-15T21:51:18Z 2012 Artigo https://repositorio.inpa.gov.br/handle/1/18058 10.1163/156853912X623757 en Volume 149, Número 1, Pags. 15-33 Restrito Behaviour
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Amphibia
Anura
Epipedobates
spellingShingle Amphibia
Anura
Epipedobates
Kaefer, Igor L.
Sexual signals of the Amazonian frog Allobates paleovarzensis: Geographic variation and stereotypy of acoustic traits
topic_facet Amphibia
Anura
Epipedobates
description Because of its close relationship with the process of evolutionary differentiation, it is expected that geographic variability in acoustic sexual traits should be greater among than within populations. This is particularly expected in organisms with typically high population genetic structure and low dispersal abilities, such as anuran amphibians. We studied the acoustic traits of the advertisement call in the small-sized dendrobatoid frog Allobates paleovarzensis through its range in Central Amazonia. We accessed the variability of call traits from the within-male to the among-population levels, and evaluated the degree of stereotypy of the call characteristics. Call variability had comparable magnitudes within and among populations, and was independent of the degree of stereotypy of call measurements. Therefore, none of the call traits stood out as a potential cue for discrimination between populations. Spectral call measurements were static and strongly related with body size, which explained between 30 and 35% of the variation of these acoustic traits. Temporal characters of the notes were dynamic and influenced by environmental temperature (e.g., 27% of note rate variation), whilst temporal measurements of the entire calls were not related to the co-factors analysed. Both spectral and temporal call traits varied among populations and between sides of the Amazon River. Our results also indicate that body size and sampling site jointly affected the variability of the call traits. However, geographic distances among populations and the river barrier had no significant effect on the overall acoustic variation, indicating that local stabilising selective forces may be important in the process of call differentiation. © 2012 Koninklijke Brill NV, Leiden.
format Artigo
author Kaefer, Igor L.
author2 Lima, Albertina Pimental
author2Str Lima, Albertina Pimental
title Sexual signals of the Amazonian frog Allobates paleovarzensis: Geographic variation and stereotypy of acoustic traits
title_short Sexual signals of the Amazonian frog Allobates paleovarzensis: Geographic variation and stereotypy of acoustic traits
title_full Sexual signals of the Amazonian frog Allobates paleovarzensis: Geographic variation and stereotypy of acoustic traits
title_fullStr Sexual signals of the Amazonian frog Allobates paleovarzensis: Geographic variation and stereotypy of acoustic traits
title_full_unstemmed Sexual signals of the Amazonian frog Allobates paleovarzensis: Geographic variation and stereotypy of acoustic traits
title_sort sexual signals of the amazonian frog allobates paleovarzensis: geographic variation and stereotypy of acoustic traits
publisher Behaviour
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/18058
_version_ 1787144552970190848
score 11.755432

Registros relacionados