Population genetic structure of two ecologically distinct Amazonian spiny rats: Separating history and current ecology
Population history and current demographic and ecological factors determine the amount of genetic variation within and the degree of differentiation among populations. Differences in the life history and ecology of codistributed species may lead to differences in hierarchical population genetic stru...
| Autor principal: | Matocq, Marjorie D. |
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| Outros Autores: | Patton, James L., Silva, Maria Nazareth Ferreira da |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Evolution
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/19180 |
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oai:repositorio:1-19180 |
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dspace |
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oai:repositorio:1-19180 Population genetic structure of two ecologically distinct Amazonian spiny rats: Separating history and current ecology Matocq, Marjorie D. Patton, James L. Silva, Maria Nazareth Ferreira da Ecology Genetic Structure Life History Genetics, Population Rodent Proechimys Proechimys Simonsi Proechimys Steerei Population history and current demographic and ecological factors determine the amount of genetic variation within and the degree of differentiation among populations. Differences in the life history and ecology of codistributed species may lead to differences in hierarchical population genetic structure. Here, we compare patterns of genetic diversity and structure of two species of spiny rats in the genus Proechimys from the Rio Jurua of western Amazonian Brazil. Based on the ecological and life-history differences between the two species, we make predictions as to how they might differ in patterns of genetic diversity and structure. We use mitochondrial sequence data from the cytochrome b gene to test these predictions. Although both species maintain nearly the same number of mitochondrial haplotypes across the sampled range, they differ in levels of genetic diversity and geographic structure. Patterns of gene flow are also different between the two species with average M-values of nearly three in P. steerei and less than one in P. simonsi. Our initial predictions are largely upheld by the genetic data and where conflicting hypotheses arise, we suggest further studies that may allow us to distinguish among evolutionary scenarios. Separating the effects of history and ongoing demography on patterns of genetic diversity is challenging. Combining genetic analyses with field studies remains essential to disentangling these complex processes. 2020-06-15T22:06:05Z 2020-06-15T22:06:05Z 2000 Artigo https://repositorio.inpa.gov.br/handle/1/19180 10.1111/j.0014-3820.2000.tb00574.x en Volume 54, Número 4, Pags. 1423-1432 Restrito Evolution |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Ecology Genetic Structure Life History Genetics, Population Rodent Proechimys Proechimys Simonsi Proechimys Steerei |
| spellingShingle |
Ecology Genetic Structure Life History Genetics, Population Rodent Proechimys Proechimys Simonsi Proechimys Steerei Matocq, Marjorie D. Population genetic structure of two ecologically distinct Amazonian spiny rats: Separating history and current ecology |
| topic_facet |
Ecology Genetic Structure Life History Genetics, Population Rodent Proechimys Proechimys Simonsi Proechimys Steerei |
| description |
Population history and current demographic and ecological factors determine the amount of genetic variation within and the degree of differentiation among populations. Differences in the life history and ecology of codistributed species may lead to differences in hierarchical population genetic structure. Here, we compare patterns of genetic diversity and structure of two species of spiny rats in the genus Proechimys from the Rio Jurua of western Amazonian Brazil. Based on the ecological and life-history differences between the two species, we make predictions as to how they might differ in patterns of genetic diversity and structure. We use mitochondrial sequence data from the cytochrome b gene to test these predictions. Although both species maintain nearly the same number of mitochondrial haplotypes across the sampled range, they differ in levels of genetic diversity and geographic structure. Patterns of gene flow are also different between the two species with average M-values of nearly three in P. steerei and less than one in P. simonsi. Our initial predictions are largely upheld by the genetic data and where conflicting hypotheses arise, we suggest further studies that may allow us to distinguish among evolutionary scenarios. Separating the effects of history and ongoing demography on patterns of genetic diversity is challenging. Combining genetic analyses with field studies remains essential to disentangling these complex processes. |
| format |
Artigo |
| author |
Matocq, Marjorie D. |
| author2 |
Patton, James L. Silva, Maria Nazareth Ferreira da |
| author2Str |
Patton, James L. Silva, Maria Nazareth Ferreira da |
| title |
Population genetic structure of two ecologically distinct Amazonian spiny rats: Separating history and current ecology |
| title_short |
Population genetic structure of two ecologically distinct Amazonian spiny rats: Separating history and current ecology |
| title_full |
Population genetic structure of two ecologically distinct Amazonian spiny rats: Separating history and current ecology |
| title_fullStr |
Population genetic structure of two ecologically distinct Amazonian spiny rats: Separating history and current ecology |
| title_full_unstemmed |
Population genetic structure of two ecologically distinct Amazonian spiny rats: Separating history and current ecology |
| title_sort |
population genetic structure of two ecologically distinct amazonian spiny rats: separating history and current ecology |
| publisher |
Evolution |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/19180 |
| _version_ |
1787144559076048896 |
| score |
11.755432 |