Divergent evolutionary processes associated with colonization of offshore islands
Oceanic islands have been a test ground for evolutionary theory, but here, we focus on the possibilities for evolutionary study created by offshore islands. These can be colonized through various means and by a wide range of species, including those with low dispersal capabilities. We use morphology...
Published in: | Molecular Ecology |
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ftinraparis:oai:prodinra.inra.fr:226047 2023-05-15T15:56:32+02:00 Divergent evolutionary processes associated with colonization of offshore islands Martinkova, Natalia Barnett, Ross Cucchi, Thomas Struchen, Rahel Pascal, Michel Fischer, Martin C Higham, Thomas Brace, Selina Ho, Simon Y. W Quere, Jean-Pierre Higgins, Paul O' Excoffier, Laurent Heckel, Gerald Hoelzel, A. Rus Dobney, Keith M. Searle, Jeremy B. 2013 application/pdf http://prodinra.inra.fr/ft/E892877D-5CDE-4297-9947-5E5E5EC2B7E4 http://prodinra.inra.fr/record/226047 https://doi.org/10.1111/mec.12462 eng eng http://creativecommons.org/licenses/by-nd-nc/1.0/ CC-BY-ND-NC Molecular Ecology 20 (22), 5205-5220. (2013) demographic analysis;genetic replacement;island colonization;Microtus arvalis;phylogeography;vole microtus-arvalis;common vole;mitochondrial-dna;population-growth;phylogenetic analyses;mainland populations;molecular phylogeny;statistical tests;genetic diversity;late-pleistocene;genetics;lattre p;agriculture ecosystems & environment ARTICLE 2013 ftinraparis https://doi.org/10.1111/mec.12462 2015-12-22T23:27:03Z Oceanic islands have been a test ground for evolutionary theory, but here, we focus on the possibilities for evolutionary study created by offshore islands. These can be colonized through various means and by a wide range of species, including those with low dispersal capabilities. We use morphology, modern and ancient sequences of cytochrome b (cytb) and microsatellite genotypes to examine colonization history and evolutionary change associated with occupation of the Orkney archipelago by the common vole (Microtus arvalis), a species found in continental Europe but not in Britain. Among possible colonization scenarios, our results are most consistent with human introduction at least 5100bp (confirmed by radiocarbon dating). We used approximate Bayesian computation of population history to infer the coast of Belgium as the possible source and estimated the evolutionary timescale using a Bayesian coalescent approach. We showed substantial morphological divergence of the island populations, including a size increase presumably driven by selection and reduced microsatellite variation likely reflecting founder events and genetic drift. More surprisingly, our results suggest that a recent and widespread cytb replacement event in the continental source area purged cytb variation there, whereas the ancestral diversity is largely retained in the colonized islands as a genetic ark'. The replacement event in the continental M.arvalis was probably triggered by anthropogenic causes (land-use change). Our studies illustrate that small offshore islands can act as field laboratories for studying various evolutionary processes over relatively short timescales, informing about the mainland source area as well as the island. Article in Journal/Newspaper Common vole Microtus arvalis Institut National de la Recherche Agronomique: ProdINRA Ark the ENVELOPE(-24.789,-24.789,-80.691,-80.691) Molecular Ecology 22 20 5205 5220 |
institution |
Open Polar |
collection |
Institut National de la Recherche Agronomique: ProdINRA |
op_collection_id |
ftinraparis |
language |
English |
topic |
demographic analysis;genetic replacement;island colonization;Microtus arvalis;phylogeography;vole microtus-arvalis;common vole;mitochondrial-dna;population-growth;phylogenetic analyses;mainland populations;molecular phylogeny;statistical tests;genetic diversity;late-pleistocene;genetics;lattre p;agriculture ecosystems & environment |
spellingShingle |
demographic analysis;genetic replacement;island colonization;Microtus arvalis;phylogeography;vole microtus-arvalis;common vole;mitochondrial-dna;population-growth;phylogenetic analyses;mainland populations;molecular phylogeny;statistical tests;genetic diversity;late-pleistocene;genetics;lattre p;agriculture ecosystems & environment Martinkova, Natalia Barnett, Ross Cucchi, Thomas Struchen, Rahel Pascal, Michel Fischer, Martin C Higham, Thomas Brace, Selina Ho, Simon Y. W Quere, Jean-Pierre Higgins, Paul O' Excoffier, Laurent Heckel, Gerald Hoelzel, A. Rus Dobney, Keith M. Divergent evolutionary processes associated with colonization of offshore islands |
topic_facet |
demographic analysis;genetic replacement;island colonization;Microtus arvalis;phylogeography;vole microtus-arvalis;common vole;mitochondrial-dna;population-growth;phylogenetic analyses;mainland populations;molecular phylogeny;statistical tests;genetic diversity;late-pleistocene;genetics;lattre p;agriculture ecosystems & environment |
description |
Oceanic islands have been a test ground for evolutionary theory, but here, we focus on the possibilities for evolutionary study created by offshore islands. These can be colonized through various means and by a wide range of species, including those with low dispersal capabilities. We use morphology, modern and ancient sequences of cytochrome b (cytb) and microsatellite genotypes to examine colonization history and evolutionary change associated with occupation of the Orkney archipelago by the common vole (Microtus arvalis), a species found in continental Europe but not in Britain. Among possible colonization scenarios, our results are most consistent with human introduction at least 5100bp (confirmed by radiocarbon dating). We used approximate Bayesian computation of population history to infer the coast of Belgium as the possible source and estimated the evolutionary timescale using a Bayesian coalescent approach. We showed substantial morphological divergence of the island populations, including a size increase presumably driven by selection and reduced microsatellite variation likely reflecting founder events and genetic drift. More surprisingly, our results suggest that a recent and widespread cytb replacement event in the continental source area purged cytb variation there, whereas the ancestral diversity is largely retained in the colonized islands as a genetic ark'. The replacement event in the continental M.arvalis was probably triggered by anthropogenic causes (land-use change). Our studies illustrate that small offshore islands can act as field laboratories for studying various evolutionary processes over relatively short timescales, informing about the mainland source area as well as the island. |
author2 |
Searle, Jeremy B. |
format |
Article in Journal/Newspaper |
author |
Martinkova, Natalia Barnett, Ross Cucchi, Thomas Struchen, Rahel Pascal, Michel Fischer, Martin C Higham, Thomas Brace, Selina Ho, Simon Y. W Quere, Jean-Pierre Higgins, Paul O' Excoffier, Laurent Heckel, Gerald Hoelzel, A. Rus Dobney, Keith M. |
author_facet |
Martinkova, Natalia Barnett, Ross Cucchi, Thomas Struchen, Rahel Pascal, Michel Fischer, Martin C Higham, Thomas Brace, Selina Ho, Simon Y. W Quere, Jean-Pierre Higgins, Paul O' Excoffier, Laurent Heckel, Gerald Hoelzel, A. Rus Dobney, Keith M. |
author_sort |
Martinkova, Natalia |
title |
Divergent evolutionary processes associated with colonization of offshore islands |
title_short |
Divergent evolutionary processes associated with colonization of offshore islands |
title_full |
Divergent evolutionary processes associated with colonization of offshore islands |
title_fullStr |
Divergent evolutionary processes associated with colonization of offshore islands |
title_full_unstemmed |
Divergent evolutionary processes associated with colonization of offshore islands |
title_sort |
divergent evolutionary processes associated with colonization of offshore islands |
publishDate |
2013 |
url |
http://prodinra.inra.fr/ft/E892877D-5CDE-4297-9947-5E5E5EC2B7E4 http://prodinra.inra.fr/record/226047 https://doi.org/10.1111/mec.12462 |
long_lat |
ENVELOPE(-24.789,-24.789,-80.691,-80.691) |
geographic |
Ark the |
geographic_facet |
Ark the |
genre |
Common vole Microtus arvalis |
genre_facet |
Common vole Microtus arvalis |
op_source |
Molecular Ecology 20 (22), 5205-5220. (2013) |
op_rights |
http://creativecommons.org/licenses/by-nd-nc/1.0/ |
op_rightsnorm |
CC-BY-ND-NC |
op_doi |
https://doi.org/10.1111/mec.12462 |
container_title |
Molecular Ecology |
container_volume |
22 |
container_issue |
20 |
container_start_page |
5205 |
op_container_end_page |
5220 |
_version_ |
1766391936953876480 |