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...
Published in: | Molecular Ecology |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2009
|
Subjects: | |
Online Access: | https://oceanrep.geomar.de/id/eprint/2516/ https://oceanrep.geomar.de/id/eprint/2516/1/matschiner.pdf https://doi.org/10.1111/j.1365-294X.2009.04220.x |
id |
ftoceanrep:oai:oceanrep.geomar.de:2516 |
---|---|
record_format |
openpolar |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:2516 2024-09-30T14:26:02+00:00 Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons Matschiner, M. Hanel, Reinhold Salzburger, W. 2009 text https://oceanrep.geomar.de/id/eprint/2516/ https://oceanrep.geomar.de/id/eprint/2516/1/matschiner.pdf https://doi.org/10.1111/j.1365-294X.2009.04220.x en eng Wiley https://oceanrep.geomar.de/id/eprint/2516/1/matschiner.pdf Matschiner, M., Hanel, R. and Salzburger, W. (2009) Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons. Molecular Ecology, 18 . pp. 2574-2587. DOI 10.1111/j.1365-294X.2009.04220.x <https://doi.org/10.1111/j.1365-294X.2009.04220.x>. doi:10.1111/j.1365-294X.2009.04220.x info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2009 ftoceanrep https://doi.org/10.1111/j.1365-294X.2009.04220.x 2024-09-04T05:04:40Z 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, FST £ 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 4-month 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 Scotia Sea OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic Scotia Sea The Antarctic Molecular Ecology 18 12 2574 2587 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
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, FST £ 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 4-month 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, M. Hanel, Reinhold Salzburger, W. |
spellingShingle |
Matschiner, M. Hanel, Reinhold Salzburger, W. Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons |
author_facet |
Matschiner, M. Hanel, Reinhold Salzburger, W. |
author_sort |
Matschiner, M. |
title |
Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons |
title_short |
Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons |
title_full |
Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons |
title_fullStr |
Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons |
title_full_unstemmed |
Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons |
title_sort |
gene flow by larval dispersal in the antarctic notothenioid fish gobionotothen gibberifrons |
publisher |
Wiley |
publishDate |
2009 |
url |
https://oceanrep.geomar.de/id/eprint/2516/ https://oceanrep.geomar.de/id/eprint/2516/1/matschiner.pdf https://doi.org/10.1111/j.1365-294X.2009.04220.x |
geographic |
Antarctic Scotia Sea The Antarctic |
geographic_facet |
Antarctic Scotia Sea The Antarctic |
genre |
Antarc* Antarctic Scotia Sea |
genre_facet |
Antarc* Antarctic Scotia Sea |
op_relation |
https://oceanrep.geomar.de/id/eprint/2516/1/matschiner.pdf Matschiner, M., Hanel, R. and Salzburger, W. (2009) Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons. Molecular Ecology, 18 . pp. 2574-2587. DOI 10.1111/j.1365-294X.2009.04220.x <https://doi.org/10.1111/j.1365-294X.2009.04220.x>. doi:10.1111/j.1365-294X.2009.04220.x |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/j.1365-294X.2009.04220.x |
container_title |
Molecular Ecology |
container_volume |
18 |
container_issue |
12 |
container_start_page |
2574 |
op_container_end_page |
2587 |
_version_ |
1811646561917075456 |