Cargando…
Radiation of the polymorphic Little Devil poison frog (Oophaga sylvatica) in Ecuador
Some South American poison frogs (Dendrobatidae) are chemically defended and use bright aposematic colors to warn potential predators of their unpalatability. Aposematic signals are often frequency‐dependent where individuals deviating from a local model are at a higher risk of predation. However, e...
Autores principales: | , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2017
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5696431/ https://www.ncbi.nlm.nih.gov/pubmed/29188006 http://dx.doi.org/10.1002/ece3.3503 |
_version_ | 1783280449310687232 |
---|---|
author | Roland, Alexandre B. Santos, Juan C. Carriker, Bella C. Caty, Stephanie N. Tapia, Elicio E. Coloma, Luis A. O'Connell, Lauren A. |
author_facet | Roland, Alexandre B. Santos, Juan C. Carriker, Bella C. Caty, Stephanie N. Tapia, Elicio E. Coloma, Luis A. O'Connell, Lauren A. |
author_sort | Roland, Alexandre B. |
collection | PubMed |
description | Some South American poison frogs (Dendrobatidae) are chemically defended and use bright aposematic colors to warn potential predators of their unpalatability. Aposematic signals are often frequency‐dependent where individuals deviating from a local model are at a higher risk of predation. However, extreme diversity in the aposematic signal has been documented in poison frogs, especially in Oophaga. Here, we explore the phylogeographic pattern among color‐divergent populations of the Little Devil poison frog Oophaga sylvatica by analyzing population structure and genetic differentiation to evaluate which processes could account for color diversity within and among populations. With a combination of PCR amplicons (three mitochondrial and three nuclear markers) and genome‐wide markers from a double‐digested RAD (ddRAD) approach, we characterized the phylogenetic and genetic structure of 199 individuals from 13 populations (12 monomorphic and 1 polymorphic) across the O. sylvatica distribution. Individuals segregated into two main lineages by their northern or southern latitudinal distribution. A high level of genetic and phenotypic polymorphism within the northern lineage suggests ongoing gene flow. In contrast, low levels of genetic differentiation were detected among the southern lineage populations and support recent range expansions from populations in the northern lineage. We propose that a combination of climatic gradients and structured landscapes might be promoting gene flow and phylogenetic diversification. Alternatively, we cannot rule out that the observed phenotypic and genomic variations are the result of genetic drift on near or neutral alleles in a small number of genes. |
format | Online Article Text |
id | pubmed-5696431 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-56964312017-11-29 Radiation of the polymorphic Little Devil poison frog (Oophaga sylvatica) in Ecuador Roland, Alexandre B. Santos, Juan C. Carriker, Bella C. Caty, Stephanie N. Tapia, Elicio E. Coloma, Luis A. O'Connell, Lauren A. Ecol Evol Original Research Some South American poison frogs (Dendrobatidae) are chemically defended and use bright aposematic colors to warn potential predators of their unpalatability. Aposematic signals are often frequency‐dependent where individuals deviating from a local model are at a higher risk of predation. However, extreme diversity in the aposematic signal has been documented in poison frogs, especially in Oophaga. Here, we explore the phylogeographic pattern among color‐divergent populations of the Little Devil poison frog Oophaga sylvatica by analyzing population structure and genetic differentiation to evaluate which processes could account for color diversity within and among populations. With a combination of PCR amplicons (three mitochondrial and three nuclear markers) and genome‐wide markers from a double‐digested RAD (ddRAD) approach, we characterized the phylogenetic and genetic structure of 199 individuals from 13 populations (12 monomorphic and 1 polymorphic) across the O. sylvatica distribution. Individuals segregated into two main lineages by their northern or southern latitudinal distribution. A high level of genetic and phenotypic polymorphism within the northern lineage suggests ongoing gene flow. In contrast, low levels of genetic differentiation were detected among the southern lineage populations and support recent range expansions from populations in the northern lineage. We propose that a combination of climatic gradients and structured landscapes might be promoting gene flow and phylogenetic diversification. Alternatively, we cannot rule out that the observed phenotypic and genomic variations are the result of genetic drift on near or neutral alleles in a small number of genes. John Wiley and Sons Inc. 2017-10-18 /pmc/articles/PMC5696431/ /pubmed/29188006 http://dx.doi.org/10.1002/ece3.3503 Text en © 2017 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Research Roland, Alexandre B. Santos, Juan C. Carriker, Bella C. Caty, Stephanie N. Tapia, Elicio E. Coloma, Luis A. O'Connell, Lauren A. Radiation of the polymorphic Little Devil poison frog (Oophaga sylvatica) in Ecuador |
title | Radiation of the polymorphic Little Devil poison frog (Oophaga sylvatica) in Ecuador |
title_full | Radiation of the polymorphic Little Devil poison frog (Oophaga sylvatica) in Ecuador |
title_fullStr | Radiation of the polymorphic Little Devil poison frog (Oophaga sylvatica) in Ecuador |
title_full_unstemmed | Radiation of the polymorphic Little Devil poison frog (Oophaga sylvatica) in Ecuador |
title_short | Radiation of the polymorphic Little Devil poison frog (Oophaga sylvatica) in Ecuador |
title_sort | radiation of the polymorphic little devil poison frog (oophaga sylvatica) in ecuador |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5696431/ https://www.ncbi.nlm.nih.gov/pubmed/29188006 http://dx.doi.org/10.1002/ece3.3503 |
work_keys_str_mv | AT rolandalexandreb radiationofthepolymorphiclittledevilpoisonfrogoophagasylvaticainecuador AT santosjuanc radiationofthepolymorphiclittledevilpoisonfrogoophagasylvaticainecuador AT carrikerbellac radiationofthepolymorphiclittledevilpoisonfrogoophagasylvaticainecuador AT catystephanien radiationofthepolymorphiclittledevilpoisonfrogoophagasylvaticainecuador AT tapiaelicioe radiationofthepolymorphiclittledevilpoisonfrogoophagasylvaticainecuador AT colomaluisa radiationofthepolymorphiclittledevilpoisonfrogoophagasylvaticainecuador AT oconnelllaurena radiationofthepolymorphiclittledevilpoisonfrogoophagasylvaticainecuador |