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    <title>Population genetics and ecological investigations of the common shipworm Teredo navalis Linnaeus, 1758 in European waters</title>
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    <namePart>Karsten, Ulf</namePart>
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  <abstract type="Summary">The thesis investigated changes in the species spectrum of shipworms in the southern Baltic Sea since 1993 and a possible range expansion. Using DNA barcoding, molecular-taxonomic evidence has been obtained that the species Teredo navalis is present in the Baltic Sea and no sister species exists. Since no genetically differentiated populations could be identified, a panmictic population can be assumed for Central Europe. Compared to earlier investigations, no spread of T. navalis to the east and thus to areas of the Baltic Sea with lower salinity could be detected.&lt;eng&gt;</abstract>
  <abstract type="Summary">Es wurde untersucht, ob es in der südlichen Ostsee seit 1993 Veränderungen im Artenspektrum der vorkommenden Bohrmuscheln sowie eine Ausbreitung ostwärts gegeben hat. Mit Hilfe des DNA barcoding konnte nachgewiesen werden, dass es sich in der Ostsee um die Art Teredo navalis handelt, ohne Vorhandensein einer Schwesternart. Da sich keine genetisch voneinander differenzierten Populationen feststellen ließen, kann für Zentraleuropa eine panmiktische Population angenommen werden. Im Vergleich zu früheren Untersuchungen konnte keine Ausbreitung in salzärmere Bereiche der Ostsee nachgewiesen werden.&lt;ger&gt;</abstract>
  <note type="statement of responsibility">vorgelegt von Ronny Weigelt</note>
  <note>GutachterInnen: Ulf Karsten (Universität Rostock, AG Angewandte Ökologie &amp; Phykologie) ; Martin Wahl (GEOMAR, Helmholtz-Zentrum für Ozeanforschung Kiel)</note>
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      <title>Population genetics and ecological investigations of the common shipworm "Teredo navalis" Linnaeus, 1758 in European waters</title>
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