Artigo

Beyond the river: Underlying determinants of population acoustic signal variability in Amazonian direct-developing Allobates (Anura: Dendrobatoidea)

The multidimensional nature of animal signals makes acoustic traits potentially subject to different determinants. The Amazonian frogs Allobates nidicola and Allobates masniger have an allopatric distribution, occurring along the left and right sides of the Madeira River, respectively. These are two...

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Autor principal: Kaefer, Igor L.
Outros Autores: Tsuji-Nishikido, Bruno Minoru, Lima, Albertina Pimental
Grau: Artigo
Idioma: English
Publicado em: Acta Ethologica 2020
Assuntos:
Animalsia
Anura
Epipedobates
Nidicola
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/17990
id oai:repositorio:1-17990
recordtype dspace
spelling oai:repositorio:1-17990 Beyond the river: Underlying determinants of population acoustic signal variability in Amazonian direct-developing Allobates (Anura: Dendrobatoidea) Kaefer, Igor L. Tsuji-Nishikido, Bruno Minoru Lima, Albertina Pimental Animalsia Anura Epipedobates Nidicola The multidimensional nature of animal signals makes acoustic traits potentially subject to different determinants. The Amazonian frogs Allobates nidicola and Allobates masniger have an allopatric distribution, occurring along the left and right sides of the Madeira River, respectively. These are two sister, phenotypically similar species whose eggs are deposited and develop entirely in a terrestrial nest. In this study, we analyzed 2,000 advertisement calls recorded from ten localities across Central Amazonia, in order to understand the role of determinants of acoustic signal variability at the population and species levels. We assessed, through nested analyses of variance, the differentiation of six characters of this sexual signal among populations and between interfluves. Moreover, we measured the degree of variability and the extent of temperature- and body size-induced plasticity in call traits. We also tested for isolation-by-distance effects in phenotypic differentiation through Mantel tests. Coefficients of variation were higher among than within populations for all call measurements. Spectral call properties were more distinctive than temporal traits among populations and species. Advertisement call traits showed strong temperature-induced plasticity (e. g., 45 % of the variation in note duration). In contrast, the effects of body size were restricted to frequency-related characters. The river barrier effect was significant among all the acoustic variables analyzed even after controlling for male body size. Geography (sampling locality) and body size also jointly affected call variability. No correlation between geographical and acoustic distances among populations was observed, suggesting that local stabilizing selective pressures have an important role in the evolution of call differentiation. © 2012 Springer-Verlag and ISPA. 2020-06-15T21:50:43Z 2020-06-15T21:50:43Z 2012 Artigo https://repositorio.inpa.gov.br/handle/1/17990 10.1007/s10211-012-0126-0 en Volume 15, Número 2, Pags. 187-194 Restrito Acta Ethologica
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Animalsia
Anura
Epipedobates
Nidicola
spellingShingle Animalsia
Anura
Epipedobates
Nidicola
Kaefer, Igor L.
Beyond the river: Underlying determinants of population acoustic signal variability in Amazonian direct-developing Allobates (Anura: Dendrobatoidea)
topic_facet Animalsia
Anura
Epipedobates
Nidicola
description The multidimensional nature of animal signals makes acoustic traits potentially subject to different determinants. The Amazonian frogs Allobates nidicola and Allobates masniger have an allopatric distribution, occurring along the left and right sides of the Madeira River, respectively. These are two sister, phenotypically similar species whose eggs are deposited and develop entirely in a terrestrial nest. In this study, we analyzed 2,000 advertisement calls recorded from ten localities across Central Amazonia, in order to understand the role of determinants of acoustic signal variability at the population and species levels. We assessed, through nested analyses of variance, the differentiation of six characters of this sexual signal among populations and between interfluves. Moreover, we measured the degree of variability and the extent of temperature- and body size-induced plasticity in call traits. We also tested for isolation-by-distance effects in phenotypic differentiation through Mantel tests. Coefficients of variation were higher among than within populations for all call measurements. Spectral call properties were more distinctive than temporal traits among populations and species. Advertisement call traits showed strong temperature-induced plasticity (e. g., 45 % of the variation in note duration). In contrast, the effects of body size were restricted to frequency-related characters. The river barrier effect was significant among all the acoustic variables analyzed even after controlling for male body size. Geography (sampling locality) and body size also jointly affected call variability. No correlation between geographical and acoustic distances among populations was observed, suggesting that local stabilizing selective pressures have an important role in the evolution of call differentiation. © 2012 Springer-Verlag and ISPA.
format Artigo
author Kaefer, Igor L.
author2 Tsuji-Nishikido, Bruno Minoru
Lima, Albertina Pimental
author2Str Tsuji-Nishikido, Bruno Minoru
Lima, Albertina Pimental
title Beyond the river: Underlying determinants of population acoustic signal variability in Amazonian direct-developing Allobates (Anura: Dendrobatoidea)
title_short Beyond the river: Underlying determinants of population acoustic signal variability in Amazonian direct-developing Allobates (Anura: Dendrobatoidea)
title_full Beyond the river: Underlying determinants of population acoustic signal variability in Amazonian direct-developing Allobates (Anura: Dendrobatoidea)
title_fullStr Beyond the river: Underlying determinants of population acoustic signal variability in Amazonian direct-developing Allobates (Anura: Dendrobatoidea)
title_full_unstemmed Beyond the river: Underlying determinants of population acoustic signal variability in Amazonian direct-developing Allobates (Anura: Dendrobatoidea)
title_sort beyond the river: underlying determinants of population acoustic signal variability in amazonian direct-developing allobates (anura: dendrobatoidea)
publisher Acta Ethologica
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/17990
_version_ 1787143741976346624
score 11.755432

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