So far away, yet so close : strong genetic structure in Homonota uruguayensis (Squamata, Phyllodactylidae), a species with restricted geographic distribution in the brazilian and uruguayan pampas
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/224400 |
Resumo: | The Pampas is a biologically rich South American biome, but is poorly represented in phylogeographic studies. While the Pleistocene glacial cycles may have affected the evolutionary history of species distributed in forested biomes, little is known about their effects on the habitats that remained stable through glacial cycles. The South American Pampas have been covered by grasslands during both glacial and interglacial periods and therefore represent an interesting system to test whether the genetic structure in such environments is less pronounced. In this study, we sampled Pampean populations of Homonota uruguayensis from Southern Brazil and Uruguay to assess the tempo and mode of population divergence, using both morphological measurements and molecular markers. Our results indicate that, in spite of its narrow geographic distribution, populations of H. uruguayensis show high levels of genetic structure. We found four major well-supported mtDNA clades with strong geographic associations. Estimates of their divergence times fell between 3.16 and 1.82 million years before the present. Populations from the central portion of the species distribution, on the border between Uruguay and Brazil, have high genetic diversity and may have undergone a population expansion approximately 250,000 years before the present. The high degree of genetic structure is reflected in the analyses of morphological characters, and most individuals could be correctly assigned to their parental population based on morphology alone. Finally, we discuss the biogeographic and conservation implications of these findings. |
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Felappi, Jéssica FrancineVieira, Renata CardosoFagundes, Nelson Jurandi RosaVerrastro Viñas, Laura2021-07-23T04:41:12Z20151932-6203http://hdl.handle.net/10183/224400000980452The Pampas is a biologically rich South American biome, but is poorly represented in phylogeographic studies. While the Pleistocene glacial cycles may have affected the evolutionary history of species distributed in forested biomes, little is known about their effects on the habitats that remained stable through glacial cycles. The South American Pampas have been covered by grasslands during both glacial and interglacial periods and therefore represent an interesting system to test whether the genetic structure in such environments is less pronounced. In this study, we sampled Pampean populations of Homonota uruguayensis from Southern Brazil and Uruguay to assess the tempo and mode of population divergence, using both morphological measurements and molecular markers. Our results indicate that, in spite of its narrow geographic distribution, populations of H. uruguayensis show high levels of genetic structure. We found four major well-supported mtDNA clades with strong geographic associations. Estimates of their divergence times fell between 3.16 and 1.82 million years before the present. Populations from the central portion of the species distribution, on the border between Uruguay and Brazil, have high genetic diversity and may have undergone a population expansion approximately 250,000 years before the present. The high degree of genetic structure is reflected in the analyses of morphological characters, and most individuals could be correctly assigned to their parental population based on morphology alone. Finally, we discuss the biogeographic and conservation implications of these findings.application/pdfengPLoS ONE. San Francisco. Vol. 10, no. 2 (2015), e0118162, 19 p.Homonota uruguayensisFilogenéticaBioma PampaSo far away, yet so close : strong genetic structure in Homonota uruguayensis (Squamata, Phyllodactylidae), a species with restricted geographic distribution in the brazilian and uruguayan pampasEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT000980452.pdf.txt000980452.pdf.txtExtracted Texttext/plain68583http://www.lume.ufrgs.br/bitstream/10183/224400/2/000980452.pdf.txt17825f3db3132fdac877764cfc2e25c5MD52ORIGINAL000980452.pdfTexto completo (inglês)application/pdf781237http://www.lume.ufrgs.br/bitstream/10183/224400/1/000980452.pdff208aa9251594b0283260737e0498919MD5110183/2244002023-09-23 03:37:20.443175oai:www.lume.ufrgs.br:10183/224400Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-09-23T06:37:20Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
So far away, yet so close : strong genetic structure in Homonota uruguayensis (Squamata, Phyllodactylidae), a species with restricted geographic distribution in the brazilian and uruguayan pampas |
title |
So far away, yet so close : strong genetic structure in Homonota uruguayensis (Squamata, Phyllodactylidae), a species with restricted geographic distribution in the brazilian and uruguayan pampas |
spellingShingle |
So far away, yet so close : strong genetic structure in Homonota uruguayensis (Squamata, Phyllodactylidae), a species with restricted geographic distribution in the brazilian and uruguayan pampas Felappi, Jéssica Francine Homonota uruguayensis Filogenética Bioma Pampa |
title_short |
So far away, yet so close : strong genetic structure in Homonota uruguayensis (Squamata, Phyllodactylidae), a species with restricted geographic distribution in the brazilian and uruguayan pampas |
title_full |
So far away, yet so close : strong genetic structure in Homonota uruguayensis (Squamata, Phyllodactylidae), a species with restricted geographic distribution in the brazilian and uruguayan pampas |
title_fullStr |
So far away, yet so close : strong genetic structure in Homonota uruguayensis (Squamata, Phyllodactylidae), a species with restricted geographic distribution in the brazilian and uruguayan pampas |
title_full_unstemmed |
So far away, yet so close : strong genetic structure in Homonota uruguayensis (Squamata, Phyllodactylidae), a species with restricted geographic distribution in the brazilian and uruguayan pampas |
title_sort |
So far away, yet so close : strong genetic structure in Homonota uruguayensis (Squamata, Phyllodactylidae), a species with restricted geographic distribution in the brazilian and uruguayan pampas |
author |
Felappi, Jéssica Francine |
author_facet |
Felappi, Jéssica Francine Vieira, Renata Cardoso Fagundes, Nelson Jurandi Rosa Verrastro Viñas, Laura |
author_role |
author |
author2 |
Vieira, Renata Cardoso Fagundes, Nelson Jurandi Rosa Verrastro Viñas, Laura |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Felappi, Jéssica Francine Vieira, Renata Cardoso Fagundes, Nelson Jurandi Rosa Verrastro Viñas, Laura |
dc.subject.por.fl_str_mv |
Homonota uruguayensis Filogenética Bioma Pampa |
topic |
Homonota uruguayensis Filogenética Bioma Pampa |
description |
The Pampas is a biologically rich South American biome, but is poorly represented in phylogeographic studies. While the Pleistocene glacial cycles may have affected the evolutionary history of species distributed in forested biomes, little is known about their effects on the habitats that remained stable through glacial cycles. The South American Pampas have been covered by grasslands during both glacial and interglacial periods and therefore represent an interesting system to test whether the genetic structure in such environments is less pronounced. In this study, we sampled Pampean populations of Homonota uruguayensis from Southern Brazil and Uruguay to assess the tempo and mode of population divergence, using both morphological measurements and molecular markers. Our results indicate that, in spite of its narrow geographic distribution, populations of H. uruguayensis show high levels of genetic structure. We found four major well-supported mtDNA clades with strong geographic associations. Estimates of their divergence times fell between 3.16 and 1.82 million years before the present. Populations from the central portion of the species distribution, on the border between Uruguay and Brazil, have high genetic diversity and may have undergone a population expansion approximately 250,000 years before the present. The high degree of genetic structure is reflected in the analyses of morphological characters, and most individuals could be correctly assigned to their parental population based on morphology alone. Finally, we discuss the biogeographic and conservation implications of these findings. |
publishDate |
2015 |
dc.date.issued.fl_str_mv |
2015 |
dc.date.accessioned.fl_str_mv |
2021-07-23T04:41:12Z |
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Estrangeiro info:eu-repo/semantics/article |
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http://hdl.handle.net/10183/224400 |
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1932-6203 |
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000980452 |
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1932-6203 000980452 |
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http://hdl.handle.net/10183/224400 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
PLoS ONE. San Francisco. Vol. 10, no. 2 (2015), e0118162, 19 p. |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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