Unexpected low genetic variation in the South American hystricognath rodent <i>Lagostomus maximus</i> (Rodentia: Chinchillidae)
The South American plains vizcacha, <i>Lagostomus maximus</i> inhabits primarily the Pampean and adjoining Espinal, Monte and Chaquenean regions of Argentina. In order to study the population genetic structure of <i>L. maximus</i>, a fragment of 560 bp of the mitochondrial DN...
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| Autores principales: | , , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2019
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/107844 http://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC6742371&blobtype=pdf https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0221559 |
| Aporte de: |
| Sumario: | The South American plains vizcacha, <i>Lagostomus maximus</i> inhabits primarily the Pampean and adjoining Espinal, Monte and Chaquenean regions of Argentina. In order to study the population genetic structure of <i>L. maximus</i>, a fragment of 560 bp of the mitochondrial DNA hypervariable region 1from 90 individuals collected from the 3 subspecies and 8 groups along Argentina was amplified and analyzed. We found 9 haplotypes. The haplotype network did not show an apparent phylogeographical signal. Although low levels of genetic variation were found in all the subspecies and groups analyzed, a radiation of <i>L. maximus</i> would have occurred from the North and Center of the Pampean region toward the rest of its geographic range in Argentina. Low levels of genetic diversity, the existence of a single genetically distinct population in Argentina and changes of its effective size indicate that metapopulation processes and changes in human population dynamics during the late-Holocene were important factors shaping the population genetic structure of <i>L. maximus</i> in Argentina. |
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