Beauty does not always denote danger: aposematic syndrome in the poison frog Dendrobates auratus

Warning signals modify predators foraging behavior by promoting the association between conspicuous signals (often coloration) and prey's unpalatability. This ecological strategy, aposematism, is better studied as a phenotypic syndrome because it involves covarying physiological, life history a...

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Autores:
Hernández Díaz, José Alfredo
Tipo de recurso:
Fecha de publicación:
2011
Institución:
Universidad de los Andes
Repositorio:
Séneca: repositorio Uniandes
Idioma:
eng
OAI Identifier:
oai:repositorio.uniandes.edu.co:1992/11664
Acceso en línea:
http://hdl.handle.net/1992/11664
Palabra clave:
Dendrobates auratus - Investigaciones
Aposematismo - Investigaciones
Biología
Rights
openAccess
License
http://creativecommons.org/licenses/by-nc-sa/4.0/
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oai_identifier_str oai:repositorio.uniandes.edu.co:1992/11664
network_acronym_str UNIANDES2
network_name_str Séneca: repositorio Uniandes
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dc.title.es_CO.fl_str_mv Beauty does not always denote danger: aposematic syndrome in the poison frog Dendrobates auratus
title Beauty does not always denote danger: aposematic syndrome in the poison frog Dendrobates auratus
spellingShingle Beauty does not always denote danger: aposematic syndrome in the poison frog Dendrobates auratus
Dendrobates auratus - Investigaciones
Aposematismo - Investigaciones
Biología
title_short Beauty does not always denote danger: aposematic syndrome in the poison frog Dendrobates auratus
title_full Beauty does not always denote danger: aposematic syndrome in the poison frog Dendrobates auratus
title_fullStr Beauty does not always denote danger: aposematic syndrome in the poison frog Dendrobates auratus
title_full_unstemmed Beauty does not always denote danger: aposematic syndrome in the poison frog Dendrobates auratus
title_sort Beauty does not always denote danger: aposematic syndrome in the poison frog Dendrobates auratus
dc.creator.fl_str_mv Hernández Díaz, José Alfredo
dc.contributor.advisor.none.fl_str_mv Amézquita Torres, Adolfo
dc.contributor.author.none.fl_str_mv Hernández Díaz, José Alfredo
dc.contributor.jury.none.fl_str_mv Molina Escobar, Jorge Alberto
dc.subject.keyword.es_CO.fl_str_mv Dendrobates auratus - Investigaciones
Aposematismo - Investigaciones
topic Dendrobates auratus - Investigaciones
Aposematismo - Investigaciones
Biología
dc.subject.themes.none.fl_str_mv Biología
description Warning signals modify predators foraging behavior by promoting the association between conspicuous signals (often coloration) and prey's unpalatability. This ecological strategy, aposematism, is better studied as a phenotypic syndrome because it involves covarying physiological, life history and behavioral traits. Among dendrobatid frogs, aposematic coloration has independently evolved in several lineages and, to the interspecific level, appears correlated with diet specialization, toxicity, body size and metabolic rate. The occurrence of intraspecific variation in coloration renders them excellent study systems to understand the evolutionary mechanisms underlying the very origin of aposematism. In this study we aimed to test the hypothesis that geographic divergence in Dendrobates auratus' aposematic coloration is correlated with toxicity, diet specialization, body size and jumping performance. We studied between 7-13 individuals from each of nine localities in Panama and found significant geographic variation in frogs' conspicuousness, body size and toxicity, but not in diet specialization or jumping performance. Body size was positively correlated with conspicuousness among localities and all individuals, but not within each locality. Jumping performance was positively correlated with conspicuousness among all individuals and within each locality, but not among localities. Interestingly, toxicity was not correlated with conspicuousness, but when excluding frogs from locality CP6 (ten times more toxic than frogs from other localities), we found a negative correlation between conspicuousness and toxicity. The pattern indicates that, in the initial steps of evolutionary divergence, high toxicity stimulates predator learning in less conspicuous localities, a hypothesis deserving further experimental testing. Our results also show that traits defining aposematic syndrome at the intra-specific level do not follow the same correlations at the inter-specific comparisons, suggesting different degrees of evolutionary canalization or heritable variation among studied traits.
publishDate 2011
dc.date.issued.none.fl_str_mv 2011
dc.date.accessioned.none.fl_str_mv 2018-09-28T08:08:00Z
dc.date.available.none.fl_str_mv 2018-09-28T08:08:00Z
dc.type.spa.fl_str_mv Trabajo de grado - Maestría
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dc.identifier.uri.none.fl_str_mv http://hdl.handle.net/1992/11664
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dc.identifier.reponame.spa.fl_str_mv reponame:Repositorio Institucional Séneca
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dc.publisher.program.es_CO.fl_str_mv Maestría en Ciencias Biológicas
dc.publisher.faculty.es_CO.fl_str_mv Facultad de Ciencias
dc.publisher.department.es_CO.fl_str_mv Departamento de Biología
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spelling Al consultar y hacer uso de este recurso, está aceptando las condiciones de uso establecidas por los autores.http://creativecommons.org/licenses/by-nc-sa/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Amézquita Torres, Adolfovirtual::16191-1Hernández Díaz, José Alfredo134ce6b1-14fa-445b-a105-f4dd1c12cdde600Molina Escobar, Jorge Alberto2018-09-28T08:08:00Z2018-09-28T08:08:00Z2011http://hdl.handle.net/1992/11664u615623.pdfinstname:Universidad de los Andesreponame:Repositorio Institucional Sénecarepourl:https://repositorio.uniandes.edu.co/Warning signals modify predators foraging behavior by promoting the association between conspicuous signals (often coloration) and prey's unpalatability. This ecological strategy, aposematism, is better studied as a phenotypic syndrome because it involves covarying physiological, life history and behavioral traits. Among dendrobatid frogs, aposematic coloration has independently evolved in several lineages and, to the interspecific level, appears correlated with diet specialization, toxicity, body size and metabolic rate. The occurrence of intraspecific variation in coloration renders them excellent study systems to understand the evolutionary mechanisms underlying the very origin of aposematism. In this study we aimed to test the hypothesis that geographic divergence in Dendrobates auratus' aposematic coloration is correlated with toxicity, diet specialization, body size and jumping performance. We studied between 7-13 individuals from each of nine localities in Panama and found significant geographic variation in frogs' conspicuousness, body size and toxicity, but not in diet specialization or jumping performance. Body size was positively correlated with conspicuousness among localities and all individuals, but not within each locality. Jumping performance was positively correlated with conspicuousness among all individuals and within each locality, but not among localities. Interestingly, toxicity was not correlated with conspicuousness, but when excluding frogs from locality CP6 (ten times more toxic than frogs from other localities), we found a negative correlation between conspicuousness and toxicity. The pattern indicates that, in the initial steps of evolutionary divergence, high toxicity stimulates predator learning in less conspicuous localities, a hypothesis deserving further experimental testing. Our results also show that traits defining aposematic syndrome at the intra-specific level do not follow the same correlations at the inter-specific comparisons, suggesting different degrees of evolutionary canalization or heritable variation among studied traits.Magíster en Ciencias BiológicasMaestría26 hojasapplication/pdfengUniandesMaestría en Ciencias BiológicasFacultad de CienciasDepartamento de Biologíainstname:Universidad de los Andesreponame:Repositorio Institucional SénecaBeauty does not always denote danger: aposematic syndrome in the poison frog Dendrobates auratusTrabajo de grado - Maestríainfo:eu-repo/semantics/masterThesishttp://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/TMDendrobates auratus - InvestigacionesAposematismo - InvestigacionesBiologíaPublicationhttps://scholar.google.es/citations?user=07uD4yoAAAAJvirtual::16191-10000-0001-7320-1143virtual::16191-1https://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0000111082virtual::16191-140c7a2f6-d55d-4787-a6a1-07644bbc435cvirtual::16191-140c7a2f6-d55d-4787-a6a1-07644bbc435cvirtual::16191-1THUMBNAILu615623.pdf.jpgu615623.pdf.jpgIM Thumbnailimage/jpeg10556https://repositorio.uniandes.edu.co/bitstreams/b9fbf6a5-e06b-41e4-96a5-bcb3c449f032/download1016c321dbaa7ad9f8d9bfd081c38d77MD55TEXTu615623.pdf.txtu615623.pdf.txtExtracted texttext/plain44044https://repositorio.uniandes.edu.co/bitstreams/43ae5462-acee-41d7-860e-e2237720ece0/download2f13868fa63ca9a49f17192aacc01aaaMD54ORIGINALu615623.pdfapplication/pdf686973https://repositorio.uniandes.edu.co/bitstreams/67d4db75-b88b-4913-b1d1-d9eb5f61de36/downloada24196c26c2e3696e1e31709ad071849MD511992/11664oai:repositorio.uniandes.edu.co:1992/116642024-03-13 15:39:40.968http://creativecommons.org/licenses/by-nc-sa/4.0/open.accesshttps://repositorio.uniandes.edu.coRepositorio institucional Sénecaadminrepositorio@uniandes.edu.co