Genetic admixture of burbot (Teleostei: Lota lota) in Lake Constance from two European glacial refugia
The burbot, Lota lota , is the only freshwater species of the codfish family and has a Holarctic distribution. Pleistocene glaciations caused significant geographical differentiation in the past, but its life history characterized by winter spawning migrations over large distances is likely to homog...
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ftubkonstanz:oai:kops.uni-konstanz.de:123456789/6860 2024-02-11T10:02:37+01:00 Genetic admixture of burbot (Teleostei: Lota lota) in Lake Constance from two European glacial refugia Barluenga, Marta Sanetra, Matthias Meyer, Axel 2006 application/pdf http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-34102 https://doi.org/10.1111/j.1365-294X.2006.03045.x eng eng http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-34102 http://dx.doi.org/10.1111/j.1365-294X.2006.03045.x 17032259 273393413 http://creativecommons.org/licenses/by-nc-nd/2.0/ Molecular Ecology. 2006, 15(12), pp. 3583-3600. ISSN 0962-1083. eISSN 1365-294X. Available under: doi:10.1111/j.1365-294X.2006.03045.x freshwater fish microsatellites mitochondrial DNA panmixia population genetics ddc:570 doc-type:article doc-type:Text 2006 ftubkonstanz https://doi.org/10.1111/j.1365-294X.2006.03045.x 2024-01-21T23:51:06Z The burbot, Lota lota , is the only freshwater species of the codfish family and has a Holarctic distribution. Pleistocene glaciations caused significant geographical differentiation in the past, but its life history characterized by winter spawning migrations over large distances is likely to homogenize populations by contemporary gene flow. We investigated the population genetic structure of 541 burbots from Lake Constance and adjacent Rhine and Danube tributaries in Europe using the entire mitochondrial DNA (mtDNA) control region and 11 microsatellites. Microsatellites revealed considerable population divergence (FST = 0.26) and evidenced recent bottlenecks in two Central European rivers. In accordance to previous evidence two main phylogeographic lineages (Atlantic and Danubian) were found co-occurring at similar frequencies in Lake Constance, where they currently undergo random mating as indicated by microsatellites. The Danubian lineage contributed only a small proportion to the lake s mtDNA diversity, and probably expanded within the lake shortly after its formation ∼10 000 15 000 BP. The larger Atlantic haplotype diversity suggested a population expansion older than the lake itself. Levels of admixture at microsatellite loci were less obvious due to their high variability, and coalescence methods were used to estimate past admixture proportions. Our results reinforce a model of a two-step colonization of Europe by burbot from an ancestral Danubian refuge, and confirm the persistence of a secondary Atlantic refuge, as proposed to exist for other freshwater fish. We conclude that the present-day burbot population in Lake Constance bears the genetic signature of both contemporary gene flow and historical separation events. published published Article in Journal/Newspaper Burbot Lota lota lota KOPS - The Institutional Repository of the University of Konstanz Molecular Ecology 15 12 3583 3600 |
institution |
Open Polar |
collection |
KOPS - The Institutional Repository of the University of Konstanz |
op_collection_id |
ftubkonstanz |
language |
English |
topic |
freshwater fish microsatellites mitochondrial DNA panmixia population genetics ddc:570 |
spellingShingle |
freshwater fish microsatellites mitochondrial DNA panmixia population genetics ddc:570 Barluenga, Marta Sanetra, Matthias Meyer, Axel Genetic admixture of burbot (Teleostei: Lota lota) in Lake Constance from two European glacial refugia |
topic_facet |
freshwater fish microsatellites mitochondrial DNA panmixia population genetics ddc:570 |
description |
The burbot, Lota lota , is the only freshwater species of the codfish family and has a Holarctic distribution. Pleistocene glaciations caused significant geographical differentiation in the past, but its life history characterized by winter spawning migrations over large distances is likely to homogenize populations by contemporary gene flow. We investigated the population genetic structure of 541 burbots from Lake Constance and adjacent Rhine and Danube tributaries in Europe using the entire mitochondrial DNA (mtDNA) control region and 11 microsatellites. Microsatellites revealed considerable population divergence (FST = 0.26) and evidenced recent bottlenecks in two Central European rivers. In accordance to previous evidence two main phylogeographic lineages (Atlantic and Danubian) were found co-occurring at similar frequencies in Lake Constance, where they currently undergo random mating as indicated by microsatellites. The Danubian lineage contributed only a small proportion to the lake s mtDNA diversity, and probably expanded within the lake shortly after its formation ∼10 000 15 000 BP. The larger Atlantic haplotype diversity suggested a population expansion older than the lake itself. Levels of admixture at microsatellite loci were less obvious due to their high variability, and coalescence methods were used to estimate past admixture proportions. Our results reinforce a model of a two-step colonization of Europe by burbot from an ancestral Danubian refuge, and confirm the persistence of a secondary Atlantic refuge, as proposed to exist for other freshwater fish. We conclude that the present-day burbot population in Lake Constance bears the genetic signature of both contemporary gene flow and historical separation events. published published |
format |
Article in Journal/Newspaper |
author |
Barluenga, Marta Sanetra, Matthias Meyer, Axel |
author_facet |
Barluenga, Marta Sanetra, Matthias Meyer, Axel |
author_sort |
Barluenga, Marta |
title |
Genetic admixture of burbot (Teleostei: Lota lota) in Lake Constance from two European glacial refugia |
title_short |
Genetic admixture of burbot (Teleostei: Lota lota) in Lake Constance from two European glacial refugia |
title_full |
Genetic admixture of burbot (Teleostei: Lota lota) in Lake Constance from two European glacial refugia |
title_fullStr |
Genetic admixture of burbot (Teleostei: Lota lota) in Lake Constance from two European glacial refugia |
title_full_unstemmed |
Genetic admixture of burbot (Teleostei: Lota lota) in Lake Constance from two European glacial refugia |
title_sort |
genetic admixture of burbot (teleostei: lota lota) in lake constance from two european glacial refugia |
publishDate |
2006 |
url |
http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-34102 https://doi.org/10.1111/j.1365-294X.2006.03045.x |
genre |
Burbot Lota lota lota |
genre_facet |
Burbot Lota lota lota |
op_source |
Molecular Ecology. 2006, 15(12), pp. 3583-3600. ISSN 0962-1083. eISSN 1365-294X. Available under: doi:10.1111/j.1365-294X.2006.03045.x |
op_relation |
http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-34102 http://dx.doi.org/10.1111/j.1365-294X.2006.03045.x 17032259 273393413 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/2.0/ |
op_doi |
https://doi.org/10.1111/j.1365-294X.2006.03045.x |
container_title |
Molecular Ecology |
container_volume |
15 |
container_issue |
12 |
container_start_page |
3583 |
op_container_end_page |
3600 |
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1790598666624434176 |