Data from: Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons
The diversification of the teleost suborder Notothenioidei (Perciformes) in Antarctic waters provides one of the most striking examples of a marine adaptive radiation. Along with a number of adaptations to the cold environment, such as the evolution of antifreeze glycoproteins, notothenioids diversi...
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ftdryad:oai:v1.datadryad.org:10255/dryad.1351 2023-05-15T13:43:51+02:00 Data from: Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons Matschiner, Michael Hanel, Reinhold Salzburger, Walter Scotia Sea South Georgia South Sandwich Islands Elephant Island King George Island Joinville Island Antarctic Peninsula Antarctica South Shetland Islands Pleistocene Holocene 2010-03-12T14:54:23Z http://hdl.handle.net/10255/dryad.1351 https://doi.org/10.5061/dryad.1351 unknown Molecular Ecology 0962-1083 doi:10.5061/dryad.1351/1 doi:10.1111/j.1365-294X.2009.04220.x PMID:19457182 doi:10.5061/dryad.1351 Matschiner M, Hanel R, Salzburger W (2009) Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons. Molecular Ecology 18: 2574-2587. http://hdl.handle.net/10255/dryad.1351 adaptive radiation population genetics isolation-with-migration model drifters Article 2010 ftdryad https://doi.org/10.5061/dryad.1351 https://doi.org/10.5061/dryad.1351/1 https://doi.org/10.1111/j.1365-294X.2009.04220.x 2020-01-01T14:14:26Z The diversification of the teleost suborder Notothenioidei (Perciformes) in Antarctic waters provides one of the most striking examples of a marine adaptive radiation. Along with a number of adaptations to the cold environment, such as the evolution of antifreeze glycoproteins, notothenioids diversified into eight families and at least 130 species. Here, we investigate the genetic population structure of the humped rockcod (Gobionotothen gibberifrons), a benthic notothenioid fish. Six populations were sampled at different locations around the Scotia Sea, comprising a large part of the species’ distribution range (N=165). Our analyses based on mitochondrial DNA sequence data (352 bp) and eight microsatellite markers reveal a lack of genetic structuring over large geographic distances (ΦST≤0.058, F ST≤0.005, p-values nonsignificant). In order to test whether this was due to passive larval dispersal, we used GPS-tracked drifter trajectories, which approximate movement of passive surface particles with ocean currents. The drifter data indicate that the Antarctic Circumpolar Current (ACC) connects the sampling locations in one direction only (West-East), and that passive transport is possible within the four-months larval period of G. gibberifrons. Indeed, when applying the isolation-with-migration model in IMA, strong unidirectional West-East migration rates are detected in the humped rockcod. This leads us to conclude that, in G. gibberifrons, genetic differentiation is prevented by gene flow via larval dispersal with the ACC. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Elephant Island Joinville Island King George Island Scotia Sea South Sandwich Islands South Shetland Islands Dryad Digital Repository (Duke University) Antarctic The Antarctic Antarctic Peninsula King George Island Scotia Sea Sandwich Islands South Sandwich Islands South Shetland Islands Elephant Island ENVELOPE(-55.184,-55.184,-61.085,-61.085) Joinville ENVELOPE(-55.867,-55.867,-63.250,-63.250) Joinville Island ENVELOPE(-55.667,-55.667,-63.350,-63.350) |
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Open Polar |
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Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
adaptive radiation population genetics isolation-with-migration model drifters |
spellingShingle |
adaptive radiation population genetics isolation-with-migration model drifters Matschiner, Michael Hanel, Reinhold Salzburger, Walter Data from: Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons |
topic_facet |
adaptive radiation population genetics isolation-with-migration model drifters |
description |
The diversification of the teleost suborder Notothenioidei (Perciformes) in Antarctic waters provides one of the most striking examples of a marine adaptive radiation. Along with a number of adaptations to the cold environment, such as the evolution of antifreeze glycoproteins, notothenioids diversified into eight families and at least 130 species. Here, we investigate the genetic population structure of the humped rockcod (Gobionotothen gibberifrons), a benthic notothenioid fish. Six populations were sampled at different locations around the Scotia Sea, comprising a large part of the species’ distribution range (N=165). Our analyses based on mitochondrial DNA sequence data (352 bp) and eight microsatellite markers reveal a lack of genetic structuring over large geographic distances (ΦST≤0.058, F ST≤0.005, p-values nonsignificant). In order to test whether this was due to passive larval dispersal, we used GPS-tracked drifter trajectories, which approximate movement of passive surface particles with ocean currents. The drifter data indicate that the Antarctic Circumpolar Current (ACC) connects the sampling locations in one direction only (West-East), and that passive transport is possible within the four-months larval period of G. gibberifrons. Indeed, when applying the isolation-with-migration model in IMA, strong unidirectional West-East migration rates are detected in the humped rockcod. This leads us to conclude that, in G. gibberifrons, genetic differentiation is prevented by gene flow via larval dispersal with the ACC. |
format |
Article in Journal/Newspaper |
author |
Matschiner, Michael Hanel, Reinhold Salzburger, Walter |
author_facet |
Matschiner, Michael Hanel, Reinhold Salzburger, Walter |
author_sort |
Matschiner, Michael |
title |
Data from: Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons |
title_short |
Data from: Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons |
title_full |
Data from: Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons |
title_fullStr |
Data from: Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons |
title_full_unstemmed |
Data from: Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons |
title_sort |
data from: gene flow by larval dispersal in the antarctic notothenioid fish gobionotothen gibberifrons |
publishDate |
2010 |
url |
http://hdl.handle.net/10255/dryad.1351 https://doi.org/10.5061/dryad.1351 |
op_coverage |
Scotia Sea South Georgia South Sandwich Islands Elephant Island King George Island Joinville Island Antarctic Peninsula Antarctica South Shetland Islands Pleistocene Holocene |
long_lat |
ENVELOPE(-55.184,-55.184,-61.085,-61.085) ENVELOPE(-55.867,-55.867,-63.250,-63.250) ENVELOPE(-55.667,-55.667,-63.350,-63.350) |
geographic |
Antarctic The Antarctic Antarctic Peninsula King George Island Scotia Sea Sandwich Islands South Sandwich Islands South Shetland Islands Elephant Island Joinville Joinville Island |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula King George Island Scotia Sea Sandwich Islands South Sandwich Islands South Shetland Islands Elephant Island Joinville Joinville Island |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Elephant Island Joinville Island King George Island Scotia Sea South Sandwich Islands South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Elephant Island Joinville Island King George Island Scotia Sea South Sandwich Islands South Shetland Islands |
op_relation |
Molecular Ecology 0962-1083 doi:10.5061/dryad.1351/1 doi:10.1111/j.1365-294X.2009.04220.x PMID:19457182 doi:10.5061/dryad.1351 Matschiner M, Hanel R, Salzburger W (2009) Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons. Molecular Ecology 18: 2574-2587. http://hdl.handle.net/10255/dryad.1351 |
op_doi |
https://doi.org/10.5061/dryad.1351 https://doi.org/10.5061/dryad.1351/1 https://doi.org/10.1111/j.1365-294X.2009.04220.x |
_version_ |
1766194202402619392 |