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Citation for Study 14483

Citation title: "Divergent evolutionary processes associated with colonization of offshore islands".

Study name: "Divergent evolutionary processes associated with colonization of offshore islands".

This study is part of submission 14483 (Status: Published).

Citation

Martinkova N., Barnett R., Cucchi T., Struchen R., Pascal M., Pascal M., Fischer M.C., Higham T., Brace S., Ho S.Y., Quere J., O'higgins P., Excoffier L., Heckel G., Hoelzel A.R., Dobney K.M., & Searle J. 2013. Divergent evolutionary processes associated with colonization of offshore islands. Molecular Ecology, .

Authors

• Martinkova N. (submitter) +420606124586
• Barnett R.
• Cucchi T.
• Struchen R.
• Pascal M.
• Pascal M.
• Fischer M.C. +41 31 631 30 36
• Higham T.
• Brace S.
• Ho S.Y.
• Quere J.
• O'higgins P.
• Excoffier L.
• Heckel G.
• Hoelzel A.R.
• Dobney K.M.
• Searle J.

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 colonised 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 Britain. Among possible colonization scenarios, our results are most consistent with human introduction at least 5,100 years ago (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 colonised 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 time scales, informing about the mainland source area as well as the island.

Keywords

Mammals, Natural Selection and Contemporary Evolution, Phylogeography, Population Genetics - Empirical, Conservation Genetics

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S14483
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref22202,
  	 author = {Natalia  Martinkova and Ross  Barnett and Thomas  Cucchi and Rahel  Struchen and Marine  Pascal and Michel  Pascal and Martin C. Fischer and Thomas  Higham and Selina  Brace and Simon Y. W. Ho and Jean-Pierre  Quere and Paul  O'Higgins and Laurent  Excoffier and Gerald  Heckel and A. Rus Hoelzel and Keith M. Dobney and Jeremy B.  Searle},
  	 title = {Divergent evolutionary processes associated with colonization of offshore islands},
  	 year = {2013},
  	 keywords = {Mammals, Natural Selection and Contemporary Evolution, Phylogeography, Population Genetics - Empirical, Conservation Genetics},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Molecular Ecology},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 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 colonised 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 Britain. Among possible colonization scenarios, our results are most consistent with human introduction at least 5,100 years ago (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 colonised 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 time scales, informing about the mainland source area as well as the island.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 22202
  AU  - Martinkova,Natalia 
  AU  - Barnett,Ross 
  AU  - Cucchi,Thomas 
  AU  - Struchen,Rahel 
  AU  - Pascal,Marine 
  AU  - Pascal,Michel 
  AU  - Fischer,Martin C.
  AU  - Higham,Thomas 
  AU  - Brace,Selina 
  AU  - Ho,Simon Y. W.
  AU  - Quere,Jean-Pierre 
  AU  - O'Higgins,Paul 
  AU  - Excoffier,Laurent 
  AU  - Heckel,Gerald 
  AU  - Hoelzel,A. Rus
  AU  - Dobney,Keith M.
  AU  - Searle,Jeremy B. 
  T1  - Divergent evolutionary processes associated with colonization of offshore islands
  PY  - 2013
  KW  - Mammals
  KW  - Natural Selection and Contemporary Evolution
  KW  - Phylogeography
  KW  - Population Genetics - Empirical
  KW  - Conservation Genetics
  UR  - http://dx.doi.org/
  N2  - 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 colonised 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 Britain. Among possible colonization scenarios, our results are most consistent with human introduction at least 5,100 years ago (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 colonised 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 time scales, informing about the mainland source area as well as the island.
  L3  - 
  JF  - Molecular Ecology
  VL  - 
  IS  - 
  ER  -