Strong isolation-by-distance in the absence of genetic population structure in the eelpout (Zoarces viviparus, Linnaeus 1758)
Identifieur interne : 000613 ( Main/Exploration ); précédent : 000612; suivant : 000614Strong isolation-by-distance in the absence of genetic population structure in the eelpout (Zoarces viviparus, Linnaeus 1758)
Auteurs : Tim Kinitz [Allemagne] ; Markus Quack [Allemagne] ; Martin Paulus [Allemagne] ; Michael Veith [Allemagne] ; Sara Bergek [Suède] ; Jakob Strand [Danemark] ; Arvo Tuvikene [Estonie] ; Anna Soirinsuo [Finlande] ; Axel Hochkirch [Allemagne]Source :
- Ecological indicators [ 1470-160X ] ; 2013.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
The eelpout (Zoarces viviparus) is a benthic marine fish, which has long been assumed to be philopatric. This made it particularly suitable for environmental monitoring programs as it allows matching its content of pollutants to the area of catch. However, a recent small scale genetic study in the Baltic Proper suggested that gene-flow might be stronger than generally believed and may occur frequently up to a distance of at least 90 km. As challenging the assumption of philopatry might have strong implications for environmental monitoring studies, we tested the hypothesis of philopatry at a larger geographical scale using ten microsatellite loci. A total of 220 individuals sampled from eight locations covering almost the entire geographic range of the species was genotyped. Our results show that genetic diversity decreases from the North Sea to the northeastern Baltic Sea. No strong population structuring was found, but a highly significant isolation-by-distance pattern was detected, suggesting a stepwise migration pattern among populations. Thus, the hypothesis of long-distance migration can be falsified. It is more likely that only limited gene flow exists among adjacent populations without any barriers between them. Our results suggest that dispersal in the eelpout is weak enough to retain this species as an important bioindicator. However, we suggest that reference stations should be placed in an appropriate distance to avoid misleading results from migrating individuals. We conclude that a more precise knowledge on migration rates of the eelpout is required in order to get more reliable insights into the potential area over which the concentration of environmental pollutants is integrated.
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aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>Trier</wicri:noRegion><wicri:noRegion>Department of Biogeography</wicri:noRegion><wicri:noRegion>Trier</wicri:noRegion></affiliation></author><author><name sortKey="Quack, Markus" sort="Quack, Markus" uniqKey="Quack M" first="Markus" last="Quack">Markus Quack</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Trier University, Department of Biogeography</s1><s2>Trier</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>9 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>Trier</wicri:noRegion><wicri:noRegion>Department of Biogeography</wicri:noRegion><wicri:noRegion>Trier</wicri:noRegion></affiliation></author><author><name sortKey="Paulus, Martin" sort="Paulus, Martin" uniqKey="Paulus M" first="Martin" last="Paulus">Martin Paulus</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Trier University, Department of Biogeography</s1><s2>Trier</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>9 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>Trier</wicri:noRegion><wicri:noRegion>Department of Biogeography</wicri:noRegion><wicri:noRegion>Trier</wicri:noRegion></affiliation></author><author><name sortKey="Veith, Michael" sort="Veith, Michael" uniqKey="Veith M" first="Michael" last="Veith">Michael Veith</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Trier University, Department of Biogeography</s1><s2>Trier</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>9 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>Trier</wicri:noRegion><wicri:noRegion>Department of Biogeography</wicri:noRegion><wicri:noRegion>Trier</wicri:noRegion></affiliation></author><author><name sortKey="Bergek, Sara" sort="Bergek, Sara" uniqKey="Bergek S" first="Sara" last="Bergek">Sara Bergek</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Swedish University of Agricultural Sciences, Department of Aquatic Resources, Institute of Freshwater Research</s1><s2>Drottningholm</s2><s3>SWE</s3><sZ>5 aut.</sZ></inist:fA14><country>Suède</country><wicri:noRegion>Drottningholm</wicri:noRegion></affiliation></author><author><name sortKey="Strand, Jakob" sort="Strand, Jakob" uniqKey="Strand J" first="Jakob" last="Strand">Jakob Strand</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Aarhus University, Department of Bioscience</s1><s2>Roskilde</s2><s3>DNK</s3><sZ>6 aut.</sZ></inist:fA14><country>Danemark</country><wicri:noRegion>Roskilde</wicri:noRegion></affiliation></author><author><name sortKey="Tuvikene, Arvo" sort="Tuvikene, Arvo" uniqKey="Tuvikene A" first="Arvo" last="Tuvikene">Arvo Tuvikene</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>Estonian University of Life Sciences, Institute of Agricultural and Environmental Sciences, Centre for Limnology, Rannu</s1><s2>Tartu County</s2><s3>EST</s3><sZ>7 aut.</sZ></inist:fA14><country>Estonie</country><wicri:noRegion>Tartu County</wicri:noRegion></affiliation></author><author><name sortKey="Soirinsuo, Anna" sort="Soirinsuo, Anna" uniqKey="Soirinsuo A" first="Anna" last="Soirinsuo">Anna Soirinsuo</name><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>Finnish Environment Institute, Marine Research Centre/State of the Marine Environment Unit</s1><s2>Helsinki</s2><s3>FIN</s3><sZ>8 aut.</sZ></inist:fA14><country>Finlande</country><wicri:noRegion>Helsinki</wicri:noRegion></affiliation></author><author><name sortKey="Hochkirch, Axel" sort="Hochkirch, Axel" uniqKey="Hochkirch A" first="Axel" last="Hochkirch">Axel Hochkirch</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Trier University, Department of Biogeography</s1><s2>Trier</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>9 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>Trier</wicri:noRegion><wicri:noRegion>Department of Biogeography</wicri:noRegion><wicri:noRegion>Trier</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Ecological indicators</title><idno type="ISSN">1470-160X</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Ecological indicators</title><idno type="ISSN">1470-160X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biological indicator</term><term>Distance</term><term>Ecological indicator</term><term>Environmental monitoring</term><term>Environmental protection</term><term>Gene flow</term><term>Microsatellite DNA</term><term>Population genetics</term><term>Population structure</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Distance</term><term>Génétique population</term><term>Structure population</term><term>Indicateur biologique</term><term>Flux génique</term><term>DNA microsatellite</term><term>Surveillance écologique</term><term>Protection environnement</term><term>Zoarces viviparus</term><term>Indicateur écologique</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The eelpout (Zoarces viviparus) is a benthic marine fish, which has long been assumed to be philopatric. This made it particularly suitable for environmental monitoring programs as it allows matching its content of pollutants to the area of catch. However, a recent small scale genetic study in the Baltic Proper suggested that gene-flow might be stronger than generally believed and may occur frequently up to a distance of at least 90 km. As challenging the assumption of philopatry might have strong implications for environmental monitoring studies, we tested the hypothesis of philopatry at a larger geographical scale using ten microsatellite loci. A total of 220 individuals sampled from eight locations covering almost the entire geographic range of the species was genotyped. Our results show that genetic diversity decreases from the North Sea to the northeastern Baltic Sea. No strong population structuring was found, but a highly significant isolation-by-distance pattern was detected, suggesting a stepwise migration pattern among populations. Thus, the hypothesis of long-distance migration can be falsified. It is more likely that only limited gene flow exists among adjacent populations without any barriers between them. Our results suggest that dispersal in the eelpout is weak enough to retain this species as an important bioindicator. However, we suggest that reference stations should be placed in an appropriate distance to avoid misleading results from migrating individuals. We conclude that a more precise knowledge on migration rates of the eelpout is required in order to get more reliable insights into the potential area over which the concentration of environmental pollutants is integrated.</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>Danemark</li><li>Estonie</li><li>Finlande</li><li>Suède</li></country></list><tree><country name="Allemagne"><noRegion><name sortKey="Kinitz, Tim" sort="Kinitz, Tim" uniqKey="Kinitz T" first="Tim" last="Kinitz">Tim Kinitz</name></noRegion><name sortKey="Hochkirch, Axel" sort="Hochkirch, Axel" uniqKey="Hochkirch A" first="Axel" last="Hochkirch">Axel Hochkirch</name><name sortKey="Paulus, Martin" sort="Paulus, Martin" uniqKey="Paulus M" first="Martin" last="Paulus">Martin Paulus</name><name sortKey="Quack, Markus" sort="Quack, Markus" uniqKey="Quack M" first="Markus" last="Quack">Markus Quack</name><name sortKey="Veith, Michael" sort="Veith, Michael" uniqKey="Veith M" first="Michael" last="Veith">Michael Veith</name></country><country name="Suède"><noRegion><name sortKey="Bergek, Sara" sort="Bergek, Sara" uniqKey="Bergek S" first="Sara" last="Bergek">Sara Bergek</name></noRegion></country><country name="Danemark"><noRegion><name sortKey="Strand, Jakob" sort="Strand, Jakob" uniqKey="Strand J" first="Jakob" last="Strand">Jakob Strand</name></noRegion></country><country name="Estonie"><noRegion><name sortKey="Tuvikene, Arvo" sort="Tuvikene, Arvo" uniqKey="Tuvikene A" first="Arvo" last="Tuvikene">Arvo Tuvikene</name></noRegion></country><country name="Finlande"><noRegion><name sortKey="Soirinsuo, Anna" sort="Soirinsuo, Anna" uniqKey="Soirinsuo A" first="Anna" last="Soirinsuo">Anna Soirinsuo</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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