Local persistence of Mann’s soft-haired mouse Abrothrix manni (Rodentia, Sigmodontinae) during Quaternary glaciations in southern Chile
Quaternary climatic oscillations have impacted Patagonian sigmodontine fauna, leaving traceable genetic footprints. In southern Chile, changes in the landscape included transitions to different vegetation formations as well as the extension of ice sheets. In this study, we focus on the Valdivian for...
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| Format: | Article |
| Language: | English |
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PeerJ Inc.
2018-12-01
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| Series: | PeerJ |
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| Online Access: | https://peerj.com/articles/6130.pdf |
| _version_ | 1797424239749365760 |
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| author | Lourdes Valdez Guilermo D’Elía |
| author_facet | Lourdes Valdez Guilermo D’Elía |
| author_sort | Lourdes Valdez |
| collection | DOAJ |
| description | Quaternary climatic oscillations have impacted Patagonian sigmodontine fauna, leaving traceable genetic footprints. In southern Chile, changes in the landscape included transitions to different vegetation formations as well as the extension of ice sheets. In this study, we focus on the Valdivian forest endemic and recently described sigmodontine species Abrothrix manni. We aim to assess the genetic structure of this species, testing for the existence of intraspecific lineages, and inferring the recent demographic history of the species. Analyses were based on the first 801 bp of the mitochondrial gene Cytocrhome-b from 49 individuals of A. manni collected at 10 localities that covers most part of its geographic distribution. Genealogical analyses recovered two main intraspecific lineages that are geographically segregated and present an intermediate site of secondary contact. Historical demography shows signal of recent population decrease. Based on these results, we proposed that current genetic diversity of A. manni differentiated in at least two distinct refugial areas in southern Chile. This scenario, in addition to be unique among those uncovered for the so far studied Valdivian forest rodents, is noteworthy because of the reduced geographic scale inhabited by the species. |
| first_indexed | 2024-03-09T07:59:27Z |
| format | Article |
| id | doaj.art-3a09469934df43e296c91fd39306abb7 |
| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-03-09T07:59:27Z |
| publishDate | 2018-12-01 |
| publisher | PeerJ Inc. |
| record_format | Article |
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| spelling | doaj.art-3a09469934df43e296c91fd39306abb72023-12-03T00:49:06ZengPeerJ Inc.PeerJ2167-83592018-12-016e613010.7717/peerj.6130Local persistence of Mann’s soft-haired mouse Abrothrix manni (Rodentia, Sigmodontinae) during Quaternary glaciations in southern ChileLourdes ValdezGuilermo D’ElíaQuaternary climatic oscillations have impacted Patagonian sigmodontine fauna, leaving traceable genetic footprints. In southern Chile, changes in the landscape included transitions to different vegetation formations as well as the extension of ice sheets. In this study, we focus on the Valdivian forest endemic and recently described sigmodontine species Abrothrix manni. We aim to assess the genetic structure of this species, testing for the existence of intraspecific lineages, and inferring the recent demographic history of the species. Analyses were based on the first 801 bp of the mitochondrial gene Cytocrhome-b from 49 individuals of A. manni collected at 10 localities that covers most part of its geographic distribution. Genealogical analyses recovered two main intraspecific lineages that are geographically segregated and present an intermediate site of secondary contact. Historical demography shows signal of recent population decrease. Based on these results, we proposed that current genetic diversity of A. manni differentiated in at least two distinct refugial areas in southern Chile. This scenario, in addition to be unique among those uncovered for the so far studied Valdivian forest rodents, is noteworthy because of the reduced geographic scale inhabited by the species.https://peerj.com/articles/6130.pdfLowland coastal refugiumPleistocenePatagoniaPhylogeographyHistorical demography |
| spellingShingle | Lourdes Valdez Guilermo D’Elía Local persistence of Mann’s soft-haired mouse Abrothrix manni (Rodentia, Sigmodontinae) during Quaternary glaciations in southern Chile PeerJ Lowland coastal refugium Pleistocene Patagonia Phylogeography Historical demography |
| title | Local persistence of Mann’s soft-haired mouse Abrothrix manni (Rodentia, Sigmodontinae) during Quaternary glaciations in southern Chile |
| title_full | Local persistence of Mann’s soft-haired mouse Abrothrix manni (Rodentia, Sigmodontinae) during Quaternary glaciations in southern Chile |
| title_fullStr | Local persistence of Mann’s soft-haired mouse Abrothrix manni (Rodentia, Sigmodontinae) during Quaternary glaciations in southern Chile |
| title_full_unstemmed | Local persistence of Mann’s soft-haired mouse Abrothrix manni (Rodentia, Sigmodontinae) during Quaternary glaciations in southern Chile |
| title_short | Local persistence of Mann’s soft-haired mouse Abrothrix manni (Rodentia, Sigmodontinae) during Quaternary glaciations in southern Chile |
| title_sort | local persistence of mann s soft haired mouse abrothrix manni rodentia sigmodontinae during quaternary glaciations in southern chile |
| topic | Lowland coastal refugium Pleistocene Patagonia Phylogeography Historical demography |
| url | https://peerj.com/articles/6130.pdf |
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