Molecular phylogenies, chromosomes and dispersion in Brazilian akodontines (Rodentia, Sigmodontinae)
A new molecular phylogeny for akodontine rodents from Brazil was proposed. The phylogenetic tree was enriched with the area of occurrence and with information on the karyotype of the samples. Based on this enriched tree, and with a described methodology, hypotheses were proposed on the karyotype and...
| Autor principal: | BARROS, Maria Claudene |
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| Outros Autores: | SAMPAIO, Maria Iracilda da Cunha, SCHNEIDER, Horacio, BONINO, Alfredo Ricardo Langguth |
| Grau: | Artigo |
| Idioma: | eng |
| Publicado em: |
2011
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| Acesso em linha: |
http://www.repositorio.ufpa.br:8080/jspui/handle/2011/2178 |
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ir-2011-2178 |
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ir-2011-21782018-02-06T15:02:13Z Molecular phylogenies, chromosomes and dispersion in Brazilian akodontines (Rodentia, Sigmodontinae) Filogenia molecular, cromossomos e dispersão em akodontinos do Brasil (Rodentia, Sigmodontinae) BARROS, Maria Claudene SAMPAIO, Maria Iracilda da Cunha SCHNEIDER, Horacio BONINO, Alfredo Ricardo Langguth Roedor Filogeografia Filogenia molecular Brasil - País A new molecular phylogeny for akodontine rodents from Brazil was proposed. The phylogenetic tree was enriched with the area of occurrence and with information on the karyotype of the samples. Based on this enriched tree, and with a described methodology, hypotheses were proposed on the karyotype and area of occurrence of the ancestors of each Clade. Thus it was possible to discuss hypotheses on chromosome evolution of the group, and on dispersion events from the "area of original differentiation" of akodontines in the Andes. Chromosome evolution started with high diploid numbers (2n=52) and showed a tendency to reduction (until 2n=14 in more recent clades). Independent side-branches of the tree showed 2n reduction and in one case the 2n increased. At least four dispersion events from the Andes down to South-eastern Brazil were proposed. The results should suggest the direction of new studies on comparative karyology. Uma nova filogenia molecular para roedores akodontinos do Brasil é proposta. A árvore filogenética foi enriquecida com a área de ocorrência e com informações sobre o cariótipo das amostras. Baseado nisto, e com a metodologia descrita, foram propostas hipóteses sobre as características do cariótipo e sobre a área de ocorrência dos ancestrais de cada clado. Assim, foi possível discutir hipóteses sobre evolução cromossômica do grupo, e sobre eventos de dispersão a partir da área de diferenciação original dos akodontinos nos Andes. A evolução cromossômica começou com números diplóides altos (2n=52) e mostrou uma tendência a redução (até 2n=14 em clados mais recentes). Ramos independentes da árvore mostraram redução do 2n e num caso aumentou o numero diplóide. Foram propostos pelo menos quatro eventos de dispersão dos Andes até o Brasil Sul-Oriental. Os resultados indicam a direção de novos estudos em cariologia comparada. 2011-05-10T21:50:02Z 2011-05-10T21:50:02Z 2009-12 Artigo de Periódico BARROS, Maria Claudene et al. Molecular phylogenies, chromosomes and dispersion in Brazilian akodontines (Rodentia, Sigmodontinae). Iheringia, Série Zoologia, Porto Alegre, v. 99, n. 4, p. 373-380, dez. 2009. Disponível em: <http://www.scielo.br/pdf/isz/v99n4/v99n4a06.pdf>. Acesso em: 15 mar. 2011. <http://dx.doi.org/10.1590/S0073-47212009000400006>. 0073-4721 http://www.repositorio.ufpa.br:8080/jspui/handle/2011/2178 eng Acesso Aberto application/pdf |
| institution |
Repositório Institucional - Universidade Federal do Pará |
| collection |
RI-UFPA |
| language |
eng |
| topic |
Roedor Filogeografia Filogenia molecular Brasil - País |
| spellingShingle |
Roedor Filogeografia Filogenia molecular Brasil - País BARROS, Maria Claudene Molecular phylogenies, chromosomes and dispersion in Brazilian akodontines (Rodentia, Sigmodontinae) |
| topic_facet |
Roedor Filogeografia Filogenia molecular Brasil - País |
| description |
A new molecular phylogeny for akodontine rodents from Brazil was proposed. The phylogenetic tree was enriched with the area of occurrence and with information on the karyotype of the samples. Based on this enriched tree, and with a described methodology, hypotheses were proposed on the karyotype and area of occurrence of the ancestors of each Clade. Thus it was possible to discuss hypotheses on chromosome evolution of the group, and on dispersion events from the "area of original differentiation" of akodontines in the Andes. Chromosome evolution started with high diploid numbers (2n=52) and showed a tendency to reduction (until 2n=14 in more recent clades). Independent side-branches of the tree showed 2n reduction and in one case the 2n increased. At least four dispersion events from the Andes down to South-eastern Brazil were proposed. The results should suggest the direction of new studies on comparative karyology. |
| format |
Artigo |
| author |
BARROS, Maria Claudene |
| author2 |
SAMPAIO, Maria Iracilda da Cunha SCHNEIDER, Horacio BONINO, Alfredo Ricardo Langguth |
| author2Str |
SAMPAIO, Maria Iracilda da Cunha SCHNEIDER, Horacio BONINO, Alfredo Ricardo Langguth |
| title |
Molecular phylogenies, chromosomes and dispersion in Brazilian akodontines (Rodentia, Sigmodontinae) |
| title_short |
Molecular phylogenies, chromosomes and dispersion in Brazilian akodontines (Rodentia, Sigmodontinae) |
| title_full |
Molecular phylogenies, chromosomes and dispersion in Brazilian akodontines (Rodentia, Sigmodontinae) |
| title_fullStr |
Molecular phylogenies, chromosomes and dispersion in Brazilian akodontines (Rodentia, Sigmodontinae) |
| title_full_unstemmed |
Molecular phylogenies, chromosomes and dispersion in Brazilian akodontines (Rodentia, Sigmodontinae) |
| title_sort |
molecular phylogenies, chromosomes and dispersion in brazilian akodontines (rodentia, sigmodontinae) |
| publishDate |
2011 |
| url |
http://www.repositorio.ufpa.br:8080/jspui/handle/2011/2178 |
| _version_ |
1832602334501273600 |
| score |
11.755432 |