Divergent evolutionary processes associated with colonization of offshore islands
Abstract 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 m...
Published in: | Molecular Ecology |
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crwiley:10.1111/mec.12462 2024-06-23T07:52:13+00:00 Divergent evolutionary processes associated with colonization of offshore islands Martínková, Natália Barnett, Ross Cucchi, Thomas Struchen, Rahel Pascal, Marine Pascal, Michel Fischer, Martin C. Higham, Thomas Brace, Selina Ho, Simon Y. W. Quéré, Jean‐Pierre O'Higgins, Paul Excoffier, Laurent Heckel, Gerald Rus Hoelzel, A. Dobney, Keith M. Searle, Jeremy B. Arts and Humanities Research Council 2013 http://dx.doi.org/10.1111/mec.12462 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmec.12462 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.12462 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mec.12462 en eng Wiley http://creativecommons.org/licenses/by/3.0/ http://doi.wiley.com/10.1002/tdm_license_1.1 Molecular Ecology volume 22, issue 20, page 5205-5220 ISSN 0962-1083 1365-294X journal-article 2013 crwiley https://doi.org/10.1111/mec.12462 2024-06-11T04:43:45Z Abstract 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 O rkney archipelago by the common vole ( M icrotus arvalis ), a species found in continental E urope but not in B ritain. Among possible colonization scenarios, our results are most consistent with human introduction at least 5100 bp (confirmed by radiocarbon dating). We used approximate B ayesian 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 Wiley Online Library Ark the ENVELOPE(-24.789,-24.789,-80.691,-80.691) Molecular Ecology 22 20 5205 5220 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract 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 O rkney archipelago by the common vole ( M icrotus arvalis ), a species found in continental E urope but not in B ritain. Among possible colonization scenarios, our results are most consistent with human introduction at least 5100 bp (confirmed by radiocarbon dating). We used approximate B ayesian 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 |
Arts and Humanities Research Council |
format |
Article in Journal/Newspaper |
author |
Martínková, Natália Barnett, Ross Cucchi, Thomas Struchen, Rahel Pascal, Marine Pascal, Michel Fischer, Martin C. Higham, Thomas Brace, Selina Ho, Simon Y. W. Quéré, Jean‐Pierre O'Higgins, Paul Excoffier, Laurent Heckel, Gerald Rus Hoelzel, A. Dobney, Keith M. Searle, Jeremy B. |
spellingShingle |
Martínková, Natália Barnett, Ross Cucchi, Thomas Struchen, Rahel Pascal, Marine Pascal, Michel Fischer, Martin C. Higham, Thomas Brace, Selina Ho, Simon Y. W. Quéré, Jean‐Pierre O'Higgins, Paul Excoffier, Laurent Heckel, Gerald Rus Hoelzel, A. Dobney, Keith M. Searle, Jeremy B. Divergent evolutionary processes associated with colonization of offshore islands |
author_facet |
Martínková, Natália Barnett, Ross Cucchi, Thomas Struchen, Rahel Pascal, Marine Pascal, Michel Fischer, Martin C. Higham, Thomas Brace, Selina Ho, Simon Y. W. Quéré, Jean‐Pierre O'Higgins, Paul Excoffier, Laurent Heckel, Gerald Rus Hoelzel, A. Dobney, Keith M. Searle, Jeremy B. |
author_sort |
Martínková, Natália |
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 |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1111/mec.12462 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmec.12462 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.12462 https://onlinelibrary.wiley.com/doi/full-xml/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 |
genre_facet |
Common vole |
op_source |
Molecular Ecology volume 22, issue 20, page 5205-5220 ISSN 0962-1083 1365-294X |
op_rights |
http://creativecommons.org/licenses/by/3.0/ http://doi.wiley.com/10.1002/tdm_license_1.1 |
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_ |
1802643456631242752 |