The genus Hylaeamys (Weksler, Percequillo and Voss, 2006): species definition and phylogeny of the forest clade of Oryzomyini tribe

Detalhes bibliográficos
Autor(a) principal: Brennand, Pamella Gusmão de Góes
Data de Publicação: 2015
Tipo de documento: Tese
Idioma: eng
Título da fonte: Biblioteca Digital de Teses e Dissertações da USP
Texto Completo: http://www.teses.usp.br/teses/disponiveis/91/91131/tde-28102015-161938/
Resumo: Current patterns of faunal diversity, geographic distribution, phylogenetic relationships and biogeography constitute a tool for understanding the evolutionary history of taxa. The boundaries of these taxa and their phylogenetic relationships reveal speciation events and therefore allow us to raise general hypotheses about the diversification of a particular group. Into the Oryzomyini, one of the most diverse tribe of Sigmodontinae subfamily, we can found the genus Hylaeamys. Currently seven species were described to that genus: H. acritus, H. seuanezi, H. megacephalus, H. oniscus, H. perenensis, H. tatei and H. yunganus. These species are distributed throughout the tropical and subtropical evergreen cis-andinean forests, from sea level to an altitude of 1500 meters, from Venezuela and Guyana, through the Amazon and the Atlantic Forest, to the north of Paraguay. The distribution of taxa within the genus were confusing and phylogenetic relationships among these species have been little explored, as well as the positioning of the genus within the clade B of Oryzomyini tribe and consequently his sister group. So my proposal was to reassess the species currently described through morphometric and molecular data to better explore the diversity within the genus, and the relations within the genus Hylaeamys and clade where it is inserted. My results showed a greater diversity than the currently described. Morphometric analysis could be helpful in the delimitation of taxa, however did not translate all the phylogenetic diversity found within the genus, witch may present cryptic species. The genus is monophiletic and a new species of Hylaeamys related to H. yunganus populations, from eastern South America was recognized. The results, also highlighted a geographical structure present within H. megacephalus, so, samples from north of the Rio Amazonas showed to be genetically distinct to those samples in southern of Rio Amazon. But this pattern was not observed in morphometric analysis. The species of the Atlantic Forest were closer to the western amazonian species. Hylaeamys showed as a sister group of a clade containing Cis and Trans Andean genera: Oecomys, Euryoryzomys and Transandinomys, indicating that the dispersion for trans-Andean areas occurred after the diversification of the Forest clade in South America.
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spelling The genus Hylaeamys (Weksler, Percequillo and Voss, 2006): species definition and phylogeny of the forest clade of Oryzomyini tribeO gênero Hylaeamys (Weksler, Percequillo and Voss, 2006): definição de espécies e filogenia do clado florestal da tribo OryzomyiniAmérica do SulCricetidaeCricetidaeDiversidadeDiversityMorfometriaMorphometricsRodentiaRodentiaSigmodontinaeSigmodontinaeSouth AmericaCurrent patterns of faunal diversity, geographic distribution, phylogenetic relationships and biogeography constitute a tool for understanding the evolutionary history of taxa. The boundaries of these taxa and their phylogenetic relationships reveal speciation events and therefore allow us to raise general hypotheses about the diversification of a particular group. Into the Oryzomyini, one of the most diverse tribe of Sigmodontinae subfamily, we can found the genus Hylaeamys. Currently seven species were described to that genus: H. acritus, H. seuanezi, H. megacephalus, H. oniscus, H. perenensis, H. tatei and H. yunganus. These species are distributed throughout the tropical and subtropical evergreen cis-andinean forests, from sea level to an altitude of 1500 meters, from Venezuela and Guyana, through the Amazon and the Atlantic Forest, to the north of Paraguay. The distribution of taxa within the genus were confusing and phylogenetic relationships among these species have been little explored, as well as the positioning of the genus within the clade B of Oryzomyini tribe and consequently his sister group. So my proposal was to reassess the species currently described through morphometric and molecular data to better explore the diversity within the genus, and the relations within the genus Hylaeamys and clade where it is inserted. My results showed a greater diversity than the currently described. Morphometric analysis could be helpful in the delimitation of taxa, however did not translate all the phylogenetic diversity found within the genus, witch may present cryptic species. The genus is monophiletic and a new species of Hylaeamys related to H. yunganus populations, from eastern South America was recognized. The results, also highlighted a geographical structure present within H. megacephalus, so, samples from north of the Rio Amazonas showed to be genetically distinct to those samples in southern of Rio Amazon. But this pattern was not observed in morphometric analysis. The species of the Atlantic Forest were closer to the western amazonian species. Hylaeamys showed as a sister group of a clade containing Cis and Trans Andean genera: Oecomys, Euryoryzomys and Transandinomys, indicating that the dispersion for trans-Andean areas occurred after the diversification of the Forest clade in South America.Padrões faunísticos atuais de diversidade, distribuição geográfica, relações filogenéticas e biogeográficas constituem uma ferramenta para a compreensão da história evolutiva dos táxons. As delimitações destes táxons e suas respectivas relações filogenéticas nos revelam eventos de especiação e consequentemente nos permitem levantar hipóteses gerais de diversificação de um determinado grupo. O gênero Hylaeamys está inserido na tribo Oryzomyini, a mais diversa da subfamília Sigmodontinae. Possui atualmente sete espécies descritas: H. acritus, H. laticeps, H. megacephalus, H. oniscus, H. perenensis, H. tatei, e H. yunganus. Estas espécies se distribuem pelas florestas tropicais e subtropicais sempre verdes cisandinas, do nível do mar até uma altitude de 1500 metros, desde a Venezuela e as Guianas, passando pela Amazônia e pela Floresta Atlântica, até o norte do Paraguai. A distribuição dos táxons dentro do gênero eram confusas e as relações filogenéticas entre estas espécies, também, foram pouco exploradas, assim como o posicionamento do gênero dentro do clado B da tribo Oryzomyini e consequentemente seu grupo irmão. Portanto, minha proposta foi reavaliar as espécies atualmente descritas abordando de forma integrativa os dados morfométricos e moleculares para melhor explorar a diversidade dentro do gênero, assim como as relações de parentesco dentro do gênero Hylaeamys e do clado onde este se encontra inserido. Como resultado, obtive uma diversidade maior do que a descrita atualmente. Análises morfométricas puderam auxiliar na delimitação dos taxa, porem não traduziu toda a diversidade filogenética encontrada dentro do gênero, podendo o gênero apresentar espécies cripticas. O gênero se mostrou monofilético e uma nova espécie de Hylaeamys, relacionada às populações de H. yunganus do leste da América do Sul foi reconhecida, assim como, ficou evidente a estruturação geográfica presente dentro da espécie H. megacephalus, onde as amostras ao norte do Rio Amazonas se mostraram geneticamente distintas das amostras ao sol do Rio Amazonas. Porém nas análises morfométricas não foi observado esse padrão. As espécies da Floresta Atlântica se mostraram filogeneticamente mais próximas das espécies do oeste Amazônico. Hylaeamys se mostrou groupo irmão de um clado contendo gêneros Cis e Trans- Andinos, sendo eles, Oecomys, Euryoryzomys e Transandinomys, indicando que a dispersão para áreas trans-andinas se deu após a diversificação do gênero na América do Sul.Biblioteca Digitais de Teses e Dissertações da USPPercequillo, Alexandre ReisBrennand, Pamella Gusmão de Góes2015-09-04info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfhttp://www.teses.usp.br/teses/disponiveis/91/91131/tde-28102015-161938/reponame:Biblioteca Digital de Teses e Dissertações da USPinstname:Universidade de São Paulo (USP)instacron:USPLiberar o conteúdo para acesso público.info:eu-repo/semantics/openAccesseng2016-07-28T16:11:58Zoai:teses.usp.br:tde-28102015-161938Biblioteca Digital de Teses e Dissertaçõeshttp://www.teses.usp.br/PUBhttp://www.teses.usp.br/cgi-bin/mtd2br.plvirginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.bropendoar:27212016-07-28T16:11:58Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv The genus Hylaeamys (Weksler, Percequillo and Voss, 2006): species definition and phylogeny of the forest clade of Oryzomyini tribe
O gênero Hylaeamys (Weksler, Percequillo and Voss, 2006): definição de espécies e filogenia do clado florestal da tribo Oryzomyini
title The genus Hylaeamys (Weksler, Percequillo and Voss, 2006): species definition and phylogeny of the forest clade of Oryzomyini tribe
spellingShingle The genus Hylaeamys (Weksler, Percequillo and Voss, 2006): species definition and phylogeny of the forest clade of Oryzomyini tribe
Brennand, Pamella Gusmão de Góes
América do Sul
Cricetidae
Cricetidae
Diversidade
Diversity
Morfometria
Morphometrics
Rodentia
Rodentia
Sigmodontinae
Sigmodontinae
South America
title_short The genus Hylaeamys (Weksler, Percequillo and Voss, 2006): species definition and phylogeny of the forest clade of Oryzomyini tribe
title_full The genus Hylaeamys (Weksler, Percequillo and Voss, 2006): species definition and phylogeny of the forest clade of Oryzomyini tribe
title_fullStr The genus Hylaeamys (Weksler, Percequillo and Voss, 2006): species definition and phylogeny of the forest clade of Oryzomyini tribe
title_full_unstemmed The genus Hylaeamys (Weksler, Percequillo and Voss, 2006): species definition and phylogeny of the forest clade of Oryzomyini tribe
title_sort The genus Hylaeamys (Weksler, Percequillo and Voss, 2006): species definition and phylogeny of the forest clade of Oryzomyini tribe
author Brennand, Pamella Gusmão de Góes
author_facet Brennand, Pamella Gusmão de Góes
author_role author
dc.contributor.none.fl_str_mv Percequillo, Alexandre Reis
dc.contributor.author.fl_str_mv Brennand, Pamella Gusmão de Góes
dc.subject.por.fl_str_mv América do Sul
Cricetidae
Cricetidae
Diversidade
Diversity
Morfometria
Morphometrics
Rodentia
Rodentia
Sigmodontinae
Sigmodontinae
South America
topic América do Sul
Cricetidae
Cricetidae
Diversidade
Diversity
Morfometria
Morphometrics
Rodentia
Rodentia
Sigmodontinae
Sigmodontinae
South America
description Current patterns of faunal diversity, geographic distribution, phylogenetic relationships and biogeography constitute a tool for understanding the evolutionary history of taxa. The boundaries of these taxa and their phylogenetic relationships reveal speciation events and therefore allow us to raise general hypotheses about the diversification of a particular group. Into the Oryzomyini, one of the most diverse tribe of Sigmodontinae subfamily, we can found the genus Hylaeamys. Currently seven species were described to that genus: H. acritus, H. seuanezi, H. megacephalus, H. oniscus, H. perenensis, H. tatei and H. yunganus. These species are distributed throughout the tropical and subtropical evergreen cis-andinean forests, from sea level to an altitude of 1500 meters, from Venezuela and Guyana, through the Amazon and the Atlantic Forest, to the north of Paraguay. The distribution of taxa within the genus were confusing and phylogenetic relationships among these species have been little explored, as well as the positioning of the genus within the clade B of Oryzomyini tribe and consequently his sister group. So my proposal was to reassess the species currently described through morphometric and molecular data to better explore the diversity within the genus, and the relations within the genus Hylaeamys and clade where it is inserted. My results showed a greater diversity than the currently described. Morphometric analysis could be helpful in the delimitation of taxa, however did not translate all the phylogenetic diversity found within the genus, witch may present cryptic species. The genus is monophiletic and a new species of Hylaeamys related to H. yunganus populations, from eastern South America was recognized. The results, also highlighted a geographical structure present within H. megacephalus, so, samples from north of the Rio Amazonas showed to be genetically distinct to those samples in southern of Rio Amazon. But this pattern was not observed in morphometric analysis. The species of the Atlantic Forest were closer to the western amazonian species. Hylaeamys showed as a sister group of a clade containing Cis and Trans Andean genera: Oecomys, Euryoryzomys and Transandinomys, indicating that the dispersion for trans-Andean areas occurred after the diversification of the Forest clade in South America.
publishDate 2015
dc.date.none.fl_str_mv 2015-09-04
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dc.language.iso.fl_str_mv eng
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dc.rights.driver.fl_str_mv Liberar o conteúdo para acesso público.
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eu_rights_str_mv openAccess
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dc.publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
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reponame:Biblioteca Digital de Teses e Dissertações da USP
instname:Universidade de São Paulo (USP)
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instname_str Universidade de São Paulo (USP)
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institution USP
reponame_str Biblioteca Digital de Teses e Dissertações da USP
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