Panmixia in the European eel: a matter of time…
The European eel (Anguilla anguilla L.) has been a prime example of the panmixia paradigm because of its extraordinary adaptation to the North Atlantic gyral system, semelparous spawning in the Sargasso Sea and long trans-oceanic migration. Recently, this view was challenged by the suggestion of a g...
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ftpubmed:oai:pubmedcentral.nih.gov:1559815 2023-05-15T13:27:49+02:00 Panmixia in the European eel: a matter of time… Dannewitz, Johan Maes, Gregory E Johansson, Leif Wickström, Håkan Volckaert, Filip A.M Järvi, Torbjörn 2005-06-01 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1559815 http://www.ncbi.nlm.nih.gov/pubmed/16024374 https://doi.org/10.1098/rspb.2005.3064 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1559815 http://www.ncbi.nlm.nih.gov/pubmed/16024374 http://dx.doi.org/10.1098/rspb.2005.3064 © 2005 The Royal Society Research Article Text 2005 ftpubmed https://doi.org/10.1098/rspb.2005.3064 2013-08-31T06:18:14Z The European eel (Anguilla anguilla L.) has been a prime example of the panmixia paradigm because of its extraordinary adaptation to the North Atlantic gyral system, semelparous spawning in the Sargasso Sea and long trans-oceanic migration. Recently, this view was challenged by the suggestion of a genetic structure characterized by an isolation-by-distance (IBD) pattern. This is only likely if spawning subpopulations are spatially and/or temporally separated, followed by non-random larval dispersal. A limitation of previous genetic work on eels is the lack of replication over time to test for temporal stability of genetic structure. Here, we hypothesize that temporal genetic variation plays a significant role in explaining the spatial structure reported earlier for this species. We tested this by increasing the texture of geographical sampling and by including temporal replicates. Overall genetic differentiation among samples was low, highly significant and comparable with earlier studies (FST=0.0014; p<0.01). On the other hand, and in sharp contrast with current understandings, hierarchical analyses revealed no significant inter-location genetic heterogeneity and hence no IBD. Instead, genetic variation among temporal samples within sites clearly exceeded the geographical component. Our results provide support for the panmixia hypothesis and emphasize the importance of temporal replication when assessing population structure of marine fish species. Text Anguilla anguilla European eel North Atlantic PubMed Central (PMC) Proceedings of the Royal Society B: Biological Sciences 272 1568 1129 1137 |
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Research Article Dannewitz, Johan Maes, Gregory E Johansson, Leif Wickström, Håkan Volckaert, Filip A.M Järvi, Torbjörn Panmixia in the European eel: a matter of time… |
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Research Article |
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The European eel (Anguilla anguilla L.) has been a prime example of the panmixia paradigm because of its extraordinary adaptation to the North Atlantic gyral system, semelparous spawning in the Sargasso Sea and long trans-oceanic migration. Recently, this view was challenged by the suggestion of a genetic structure characterized by an isolation-by-distance (IBD) pattern. This is only likely if spawning subpopulations are spatially and/or temporally separated, followed by non-random larval dispersal. A limitation of previous genetic work on eels is the lack of replication over time to test for temporal stability of genetic structure. Here, we hypothesize that temporal genetic variation plays a significant role in explaining the spatial structure reported earlier for this species. We tested this by increasing the texture of geographical sampling and by including temporal replicates. Overall genetic differentiation among samples was low, highly significant and comparable with earlier studies (FST=0.0014; p<0.01). On the other hand, and in sharp contrast with current understandings, hierarchical analyses revealed no significant inter-location genetic heterogeneity and hence no IBD. Instead, genetic variation among temporal samples within sites clearly exceeded the geographical component. Our results provide support for the panmixia hypothesis and emphasize the importance of temporal replication when assessing population structure of marine fish species. |
format |
Text |
author |
Dannewitz, Johan Maes, Gregory E Johansson, Leif Wickström, Håkan Volckaert, Filip A.M Järvi, Torbjörn |
author_facet |
Dannewitz, Johan Maes, Gregory E Johansson, Leif Wickström, Håkan Volckaert, Filip A.M Järvi, Torbjörn |
author_sort |
Dannewitz, Johan |
title |
Panmixia in the European eel: a matter of time… |
title_short |
Panmixia in the European eel: a matter of time… |
title_full |
Panmixia in the European eel: a matter of time… |
title_fullStr |
Panmixia in the European eel: a matter of time… |
title_full_unstemmed |
Panmixia in the European eel: a matter of time… |
title_sort |
panmixia in the european eel: a matter of time… |
publisher |
The Royal Society |
publishDate |
2005 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1559815 http://www.ncbi.nlm.nih.gov/pubmed/16024374 https://doi.org/10.1098/rspb.2005.3064 |
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Anguilla anguilla European eel North Atlantic |
genre_facet |
Anguilla anguilla European eel North Atlantic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1559815 http://www.ncbi.nlm.nih.gov/pubmed/16024374 http://dx.doi.org/10.1098/rspb.2005.3064 |
op_rights |
© 2005 The Royal Society |
op_doi |
https://doi.org/10.1098/rspb.2005.3064 |
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Proceedings of the Royal Society B: Biological Sciences |
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272 |
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1568 |
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1129 |
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1137 |
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