Population genetics reveal patterns of natural colonisation of an ecologically and commercially important invasive fish
Although historical records of introductions that trigger successful biological invasions are common, subsequent patterns of dispersal and colonisation routes are unclear. We use microsatellites to examine genetic population structuring of established invasive brown trout (Salmo trutta) populations...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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2021
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Online Access: | https://pure.qub.ac.uk/en/publications/16b65056-dff9-447e-9463-5b3b76b9aae8 https://doi.org/10.1139/cjfas-2020-0255 https://pureadmin.qub.ac.uk/ws/files/251589711/cjfas_2020_0255.pdf |
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ftqueensubelpubl:oai:pure.qub.ac.uk/portal:publications/16b65056-dff9-447e-9463-5b3b76b9aae8 2024-05-19T07:44:14+00:00 Population genetics reveal patterns of natural colonisation of an ecologically and commercially important invasive fish O’Toole, Ciar Phillips, Karl P. Bradley, Caroline Coughlan, Jamie Dillane, Eileen Fleming, Ian A. Reed, Thomas E. Westley, Peter A.H. Cross, Tom F. McGinnity, Philip Prodöhl, Paulo A. 2021-10 application/pdf https://pure.qub.ac.uk/en/publications/16b65056-dff9-447e-9463-5b3b76b9aae8 https://doi.org/10.1139/cjfas-2020-0255 https://pureadmin.qub.ac.uk/ws/files/251589711/cjfas_2020_0255.pdf eng eng https://pure.qub.ac.uk/en/publications/16b65056-dff9-447e-9463-5b3b76b9aae8 info:eu-repo/semantics/openAccess O’Toole , C , Phillips , K P , Bradley , C , Coughlan , J , Dillane , E , Fleming , I A , Reed , T E , Westley , P A H , Cross , T F , McGinnity , P & Prodöhl , P A 2021 , ' Population genetics reveal patterns of natural colonisation of an ecologically and commercially important invasive fish ' , Canadian Journal of Fisheries and Aquatic Sciences , vol. 78 , no. 10 , pp. 1497-1511 . https://doi.org/10.1139/cjfas-2020-0255 Aquatic Science Ecology Evolution Behavior and Systematics article 2021 ftqueensubelpubl https://doi.org/10.1139/cjfas-2020-0255 2024-05-02T00:40:53Z Although historical records of introductions that trigger successful biological invasions are common, subsequent patterns of dispersal and colonisation routes are unclear. We use microsatellites to examine genetic population structuring of established invasive brown trout (Salmo trutta) populations in Newfoundland, Canada, for evidence of “natural” dispersal, human-mediated introductions, and colonisation routes. We also explored ancestry of contemporary populations relative to presumed progenitors. Results analysed using STRUCTURE, DAPC, a NJ tree and FST comparisons support records of historical introductions; current Newfoundland populations are largely descended from Scottish stock, with St. John’s the primary introduction site. Subsequent dispersal of these trout was facilitated principally by anadromy, largely consistent with a classic stepping-stone model, with significant isolation-by-distance. With one exception, dispersal along the north and south coasts of the Avalon peninsula appears to be natural and independent, involving stochastic processes resulting in unique outcomes for population composition. This study is a good example of dispersal patterns during a contemporary invasion underscoring the potential for non-anadromous founders to re-express anadromy, facilitating colonization of distant sites. Article in Journal/Newspaper Newfoundland Queen's University Belfast Research Portal Canadian Journal of Fisheries and Aquatic Sciences 78 10 1497 1511 |
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Open Polar |
collection |
Queen's University Belfast Research Portal |
op_collection_id |
ftqueensubelpubl |
language |
English |
topic |
Aquatic Science Ecology Evolution Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology Evolution Behavior and Systematics O’Toole, Ciar Phillips, Karl P. Bradley, Caroline Coughlan, Jamie Dillane, Eileen Fleming, Ian A. Reed, Thomas E. Westley, Peter A.H. Cross, Tom F. McGinnity, Philip Prodöhl, Paulo A. Population genetics reveal patterns of natural colonisation of an ecologically and commercially important invasive fish |
topic_facet |
Aquatic Science Ecology Evolution Behavior and Systematics |
description |
Although historical records of introductions that trigger successful biological invasions are common, subsequent patterns of dispersal and colonisation routes are unclear. We use microsatellites to examine genetic population structuring of established invasive brown trout (Salmo trutta) populations in Newfoundland, Canada, for evidence of “natural” dispersal, human-mediated introductions, and colonisation routes. We also explored ancestry of contemporary populations relative to presumed progenitors. Results analysed using STRUCTURE, DAPC, a NJ tree and FST comparisons support records of historical introductions; current Newfoundland populations are largely descended from Scottish stock, with St. John’s the primary introduction site. Subsequent dispersal of these trout was facilitated principally by anadromy, largely consistent with a classic stepping-stone model, with significant isolation-by-distance. With one exception, dispersal along the north and south coasts of the Avalon peninsula appears to be natural and independent, involving stochastic processes resulting in unique outcomes for population composition. This study is a good example of dispersal patterns during a contemporary invasion underscoring the potential for non-anadromous founders to re-express anadromy, facilitating colonization of distant sites. |
format |
Article in Journal/Newspaper |
author |
O’Toole, Ciar Phillips, Karl P. Bradley, Caroline Coughlan, Jamie Dillane, Eileen Fleming, Ian A. Reed, Thomas E. Westley, Peter A.H. Cross, Tom F. McGinnity, Philip Prodöhl, Paulo A. |
author_facet |
O’Toole, Ciar Phillips, Karl P. Bradley, Caroline Coughlan, Jamie Dillane, Eileen Fleming, Ian A. Reed, Thomas E. Westley, Peter A.H. Cross, Tom F. McGinnity, Philip Prodöhl, Paulo A. |
author_sort |
O’Toole, Ciar |
title |
Population genetics reveal patterns of natural colonisation of an ecologically and commercially important invasive fish |
title_short |
Population genetics reveal patterns of natural colonisation of an ecologically and commercially important invasive fish |
title_full |
Population genetics reveal patterns of natural colonisation of an ecologically and commercially important invasive fish |
title_fullStr |
Population genetics reveal patterns of natural colonisation of an ecologically and commercially important invasive fish |
title_full_unstemmed |
Population genetics reveal patterns of natural colonisation of an ecologically and commercially important invasive fish |
title_sort |
population genetics reveal patterns of natural colonisation of an ecologically and commercially important invasive fish |
publishDate |
2021 |
url |
https://pure.qub.ac.uk/en/publications/16b65056-dff9-447e-9463-5b3b76b9aae8 https://doi.org/10.1139/cjfas-2020-0255 https://pureadmin.qub.ac.uk/ws/files/251589711/cjfas_2020_0255.pdf |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
O’Toole , C , Phillips , K P , Bradley , C , Coughlan , J , Dillane , E , Fleming , I A , Reed , T E , Westley , P A H , Cross , T F , McGinnity , P & Prodöhl , P A 2021 , ' Population genetics reveal patterns of natural colonisation of an ecologically and commercially important invasive fish ' , Canadian Journal of Fisheries and Aquatic Sciences , vol. 78 , no. 10 , pp. 1497-1511 . https://doi.org/10.1139/cjfas-2020-0255 |
op_relation |
https://pure.qub.ac.uk/en/publications/16b65056-dff9-447e-9463-5b3b76b9aae8 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1139/cjfas-2020-0255 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
78 |
container_issue |
10 |
container_start_page |
1497 |
op_container_end_page |
1511 |
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1799484005035278336 |