Hierarchical genetic structure and gene flow in three sympatric species of Amazonian rodents
The population genetic structure of three species of Amazonian rodents (Oligoryzomys microtis, Oryzomys capito, and Mesomys hispidus) is examined for mtDNA sequence haplotypes of the cytochrome b gene by hierarchical analysis of variance and gene flow estimates based on fixation indices (NST) and co...
| Autor principal: | Patton, James L. |
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| Outros Autores: | Silva, Maria Nazareth Ferreira da, Malcolm, Jay R. |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Molecular Ecology
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/19414 |
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oai:repositorio:1-19414 |
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oai:repositorio:1-19414 Hierarchical genetic structure and gene flow in three sympatric species of Amazonian rodents Patton, James L. Silva, Maria Nazareth Ferreira da Malcolm, Jay R. Capito Mesomys Mesomys Hispidus Microtis Oligoryzomys Oligoryzomys Microtis Oryzomys Oryzomys Capito Rodentia Cytochrome B Dna, Mitochondrial Animals Brasil Comparative Study Ecosystem Gene Frequency Genetic Variability Genetics Haplotype Genetics, Population Rodent Species Difference Animal Brasil Cytochrome B Group Dna, Mitochondrial Ecosystem Gene Frequency Genetics, Population Haplotypes Rodentia Species Specificity Variation (genetics) The population genetic structure of three species of Amazonian rodents (Oligoryzomys microtis, Oryzomys capito, and Mesomys hispidus) is examined for mtDNA sequence haplotypes of the cytochrome b gene by hierarchical analysis of variance and gene flow estimates based on fixation indices (NST) and coalescence methods. Species samples are from the same localities along 1000 km of the Rio Juruá in western Amazonian Brazil, but each species differs in important life history traits such as population size and reproductive rate. Average haplotype differentiation, hierarchical haplotype apportionment, and gene flow estimates are contrasted in discussing the current and past population structure. Two species exhibit isolation by distance patterns wherein gene flow is largely limited to geographically adjacent localities. Mesomys exhibits this pattern throughout its range along the river. More than 75% of haplotype variation is apportioned among localities and regions, and estimates of Nm for pair-wise comparisons are nearly always less than 1. Oligoryzomys shows weak isolation by distance, but only over the largest geographical distances. Nm values for this species are nearly always above 1 and most (about 80%) of haplotype variation is contained within local populations. In contrast, Oryzomys exhibits no genetic structure throughout its entire distribution; Nm values average 17 and nearly 90% of the total haplotype variance is contained within local populations. Although gene flow estimates are high, the pattern of Nm as a function of geographical distance suggests that this species experienced a more recent invasion of the region and is still in genetic disequilibrium under its current demographic conditions. 2020-06-15T22:08:22Z 2020-06-15T22:08:22Z 1996 Artigo https://repositorio.inpa.gov.br/handle/1/19414 10.1111/j.1365-294X.1996.tb00310.x en Volume 5, Número 2, Pags. 229-238 Restrito Molecular Ecology |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Capito Mesomys Mesomys Hispidus Microtis Oligoryzomys Oligoryzomys Microtis Oryzomys Oryzomys Capito Rodentia Cytochrome B Dna, Mitochondrial Animals Brasil Comparative Study Ecosystem Gene Frequency Genetic Variability Genetics Haplotype Genetics, Population Rodent Species Difference Animal Brasil Cytochrome B Group Dna, Mitochondrial Ecosystem Gene Frequency Genetics, Population Haplotypes Rodentia Species Specificity Variation (genetics) |
| spellingShingle |
Capito Mesomys Mesomys Hispidus Microtis Oligoryzomys Oligoryzomys Microtis Oryzomys Oryzomys Capito Rodentia Cytochrome B Dna, Mitochondrial Animals Brasil Comparative Study Ecosystem Gene Frequency Genetic Variability Genetics Haplotype Genetics, Population Rodent Species Difference Animal Brasil Cytochrome B Group Dna, Mitochondrial Ecosystem Gene Frequency Genetics, Population Haplotypes Rodentia Species Specificity Variation (genetics) Patton, James L. Hierarchical genetic structure and gene flow in three sympatric species of Amazonian rodents |
| topic_facet |
Capito Mesomys Mesomys Hispidus Microtis Oligoryzomys Oligoryzomys Microtis Oryzomys Oryzomys Capito Rodentia Cytochrome B Dna, Mitochondrial Animals Brasil Comparative Study Ecosystem Gene Frequency Genetic Variability Genetics Haplotype Genetics, Population Rodent Species Difference Animal Brasil Cytochrome B Group Dna, Mitochondrial Ecosystem Gene Frequency Genetics, Population Haplotypes Rodentia Species Specificity Variation (genetics) |
| description |
The population genetic structure of three species of Amazonian rodents (Oligoryzomys microtis, Oryzomys capito, and Mesomys hispidus) is examined for mtDNA sequence haplotypes of the cytochrome b gene by hierarchical analysis of variance and gene flow estimates based on fixation indices (NST) and coalescence methods. Species samples are from the same localities along 1000 km of the Rio Juruá in western Amazonian Brazil, but each species differs in important life history traits such as population size and reproductive rate. Average haplotype differentiation, hierarchical haplotype apportionment, and gene flow estimates are contrasted in discussing the current and past population structure. Two species exhibit isolation by distance patterns wherein gene flow is largely limited to geographically adjacent localities. Mesomys exhibits this pattern throughout its range along the river. More than 75% of haplotype variation is apportioned among localities and regions, and estimates of Nm for pair-wise comparisons are nearly always less than 1. Oligoryzomys shows weak isolation by distance, but only over the largest geographical distances. Nm values for this species are nearly always above 1 and most (about 80%) of haplotype variation is contained within local populations. In contrast, Oryzomys exhibits no genetic structure throughout its entire distribution; Nm values average 17 and nearly 90% of the total haplotype variance is contained within local populations. Although gene flow estimates are high, the pattern of Nm as a function of geographical distance suggests that this species experienced a more recent invasion of the region and is still in genetic disequilibrium under its current demographic conditions. |
| format |
Artigo |
| author |
Patton, James L. |
| author2 |
Silva, Maria Nazareth Ferreira da Malcolm, Jay R. |
| author2Str |
Silva, Maria Nazareth Ferreira da Malcolm, Jay R. |
| title |
Hierarchical genetic structure and gene flow in three sympatric species of Amazonian rodents |
| title_short |
Hierarchical genetic structure and gene flow in three sympatric species of Amazonian rodents |
| title_full |
Hierarchical genetic structure and gene flow in three sympatric species of Amazonian rodents |
| title_fullStr |
Hierarchical genetic structure and gene flow in three sympatric species of Amazonian rodents |
| title_full_unstemmed |
Hierarchical genetic structure and gene flow in three sympatric species of Amazonian rodents |
| title_sort |
hierarchical genetic structure and gene flow in three sympatric species of amazonian rodents |
| publisher |
Molecular Ecology |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/19414 |
| _version_ |
1787145287348781056 |
| score |
11.755432 |