Genetic poverty of an extremely specialized wetland species, Nehalennia speciosa: implications for conservation (Odonata: Coenagrionidae)
Identifieur interne : 000D28 ( Main/Exploration ); précédent : 000D27; suivant : 000D29Genetic poverty of an extremely specialized wetland species, Nehalennia speciosa: implications for conservation (Odonata: Coenagrionidae)
Auteurs : R. Bemard [Pologne] ; T. Schmitt [Allemagne]Source :
- Bulletin of entomological research [ 0007-4853 ] ; 2010.
Descripteurs français
- Pascal (Inist)
- Wicri :
- geographic : Pologne, Lituanie.
- topic : Répartition géographique, Zone humide.
English descriptors
- KwdEn :
Abstract
Oligo- and mesotrophic wetlands, such as bogs, fens and swamps, have become more and more restricted in Europe, and wetland species related to them have increasingly been threatened. Due to increasing habitat fragmentation, the exchange of individuals of these species among sites and, as a consequence, gene flow has been reduced or even eliminated. Therefore, we analysed the genetic structure of 11 populations of an endangered stenotopic damselfly, Nehalennia speciosa (Odonata: Coenagrionidae), in Poland and Lithuania by means of allozyme electrophoresis of 14 gene loci. The overall genetic diversity of all populations was low (A: 1.32; H: 2.6%; Ptot: 29.2%), and no significant differences were observed among the different groupings of populations (degree of fragmentation, habitat type and size, population size). The genetic differentiation among populations was also low (FST: 2.0%) and no regional groups were detected. A low degree of isolation by distance was observed for genetic distances. Taking into account these results, the conservation effort for this species should be focused on large local populations and not necessarily on metapopulation structures. Furthermore, N. speciosa could be (re-)introduced in extinct patches and seemingly suitable localities. Genetically, such relocations should be feasible due to the generally high genetic homogeneity of populations.
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Schmitt</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Biogeography, Trier University, Wissenschaftspark, Trier-Petrisberg Gebäude 24</s1><s2>54286 Trier</s2><s3>DEU</s3><sZ>2 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>54286 Trier</wicri:noRegion><wicri:noRegion>Trier-Petrisberg Gebäude 24</wicri:noRegion><wicri:noRegion>54286 Trier</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">11-0211369</idno><date when="2010">2010</date><idno type="stanalyst">PASCAL 11-0211369 INIST</idno><idno type="RBID">Pascal:11-0211369</idno><idno type="wicri:Area/PascalFrancis/Corpus">000432</idno><idno type="wicri:Area/PascalFrancis/Curation">000916</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000399</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000399</idno><idno type="wicri:doubleKey">0007-4853:2010:Bemard R:genetic:poverty:of</idno><idno type="wicri:Area/Main/Merge">000D90</idno><idno type="wicri:Area/Main/Curation">000D28</idno><idno type="wicri:Area/Main/Exploration">000D28</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Genetic poverty of an extremely specialized wetland species, Nehalennia speciosa: implications for conservation (Odonata: Coenagrionidae)</title><author><name sortKey="Bemard, R" sort="Bemard, R" uniqKey="Bemard R" first="R." last="Bemard">R. Bemard</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of General Zoology, Adam Mickiewicz University, Umultowska 89</s1><s2>61-614 Poznan</s2><s3>POL</s3><sZ>1 aut.</sZ></inist:fA14><country>Pologne</country><wicri:noRegion>61-614 Poznan</wicri:noRegion></affiliation></author><author><name sortKey="Schmitt, T" sort="Schmitt, T" uniqKey="Schmitt T" first="T." last="Schmitt">T. Schmitt</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Biogeography, Trier University, Wissenschaftspark, Trier-Petrisberg Gebäude 24</s1><s2>54286 Trier</s2><s3>DEU</s3><sZ>2 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>54286 Trier</wicri:noRegion><wicri:noRegion>Trier-Petrisberg Gebäude 24</wicri:noRegion><wicri:noRegion>54286 Trier</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Bulletin of entomological research</title><title level="j" type="abbreviated">Bull. entomol. res.</title><idno type="ISSN">0007-4853</idno><imprint><date when="2010">2010</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Bulletin of entomological research</title><title level="j" type="abbreviated">Bull. entomol. res.</title><idno type="ISSN">0007-4853</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Allozyme</term><term>Animal conservation</term><term>Animal population</term><term>Coenagrionidae</term><term>Electrophoresis</term><term>Gene frequency</term><term>Genetic diversity</term><term>Genetic resource</term><term>Geographic distribution</term><term>Lithuania</term><term>Poland</term><term>Population genetics</term><term>Wetland</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Diversité génétique</term><term>Population animale</term><term>Ressource génétique</term><term>Electrophorèse</term><term>Allozyme</term><term>Fréquence génique</term><term>Protection faune</term><term>Génétique population</term><term>Répartition géographique</term><term>Zone humide</term><term>Pologne</term><term>Lituanie</term><term>Coenagrionidae</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Pologne</term><term>Lituanie</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Répartition géographique</term><term>Zone humide</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Oligo- and mesotrophic wetlands, such as bogs, fens and swamps, have become more and more restricted in Europe, and wetland species related to them have increasingly been threatened. Due to increasing habitat fragmentation, the exchange of individuals of these species among sites and, as a consequence, gene flow has been reduced or even eliminated. Therefore, we analysed the genetic structure of 11 populations of an endangered stenotopic damselfly, Nehalennia speciosa (Odonata: Coenagrionidae), in Poland and Lithuania by means of allozyme electrophoresis of 14 gene loci. The overall genetic diversity of all populations was low (A: 1.32; H: 2.6%; P<sub>tot</sub>: 29.2%), and no significant differences were observed among the different groupings of populations (degree of fragmentation, habitat type and size, population size). The genetic differentiation among populations was also low (F<sub>ST</sub>: 2.0%) and no regional groups were detected. A low degree of isolation by distance was observed for genetic distances. Taking into account these results, the conservation effort for this species should be focused on large local populations and not necessarily on metapopulation structures. Furthermore, N. speciosa could be (re-)introduced in extinct patches and seemingly suitable localities. Genetically, such relocations should be feasible due to the generally high genetic homogeneity of populations.</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>Pologne</li></country></list><tree><country name="Pologne"><noRegion><name sortKey="Bemard, R" sort="Bemard, R" uniqKey="Bemard R" first="R." last="Bemard">R. Bemard</name></noRegion></country><country name="Allemagne"><noRegion><name sortKey="Schmitt, T" sort="Schmitt, T" uniqKey="Schmitt T" first="T." last="Schmitt">T. Schmitt</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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