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Nolte, A. W., Freyhof, J., Stemshorn, K. C., & Tautz, D. (2005). An invasive lineage of sculpins, Cottus sp. (Pisces, Teleostei) in the Rhine with new habitat adaptions has originated from hybridization between old phylogeographic groups. Proc. R. Soc. B, 2005(272), 2379?2387.
Zusammenfassung: Fish abundance surveys in the Rhine system have shown in the past two decades that there is a rapid upriver invasion of a freshwater sculpin of the genus Cottus. These fish are found in habitats that are atypical for the known species Cottus gobio, which is confined to small cold streams within the Rhine drainage. Phylogeographic analysis based on mitochondrial haplotypes and diagnostic single nucleotide polymorphisms indicates that the invasive sculpins are hybrids between two old lineages from the River Scheldt drainage and the River Rhine drainage, although it is morphologically more similar to the Scheldt sculpins. Most importantly, however, the invasive population possesses a unique ecological potential that does not occur in either of the source populations from the Rhine or the Scheldt, which allows the colonization of new habitats that have previously been free of sculpins. Microsatellite analysis shows that the new lineage is genetically intermediate between the old lineages and that it forms a distinct genetic group across its whole expansion range.We conclude that hybridization between long separated groups has lead to the fast emergence of a new, adaptationally distinct sculpin lineage.
Schlüsselwörter: Fisch, Groppe, Cottus, Artbildung, Morphologie, Genetik, Habitat
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Zienert, S., & Heidrich, S. (2005). Aufzucht von Zandern in der Aquakultur. Schriften des Instituts für Binnenfischerei e.V. Potsdam-Sacrow, 18. Potsdam-Sacrow: Institut für Binnenfischerei.
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Tritscler, S. (2005). Aut- und populationsökologische Untersuchungen an dem Neozoen Procambarus clarkii, GIRARD. Diploma thesis, Albert-Ludwigs-Universität, Freiburg.
Schlüsselwörter: Krebs, Procambarus clarkii, Roter amerikanischer Sumpfkrebs, Vorkommen, Nahrung, Fortpflanzung
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Schager, E., & Peter, A. (2005). Bedrohte strömungsliebende Cypriniden in der Thur. Kastanienbaum: EAWAG.
Schlüsselwörter: Fisch, Nase, Chondrostoma nasus, Strömer, Leuciscus souffia, Barbe, Barbus barbus, Schneider, Alburnoides bipunctatus, Vorkommen, Thur, Schweiz
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Baer, J. (2005). Besatz mit Bachforellen – Ziele und Sinn einer Besatzleitlinie. Offenbach: Verband Deutscher Sportfischer e.V.
Schlüsselwörter: Fisch, Bachforelle, Besatz, Ertrag, Fortpflanzung, Wachstum
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Dußling, U., Bischoff, A., Haberbosch, R., Hoffmann, A., Klinger, R., Wolter, C., et al. (2005). Der Fischregionindex (FRI) – ein Instrument zur Fließgewässerbewertung gemäß EG-Wasserrahmenrichtlinie.
Schlüsselwörter: WRRL, FRI, Fisch
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Lehmann, J., Mock, D., & Kühlmann, M. (2005). Der Schwimmblasenwurm Cystidicola farionis FISCHER (Fadenwürmer/Nematoda:Spiruroidea) bei Salmoniden (Vol. 56).
Schlüsselwörter: Fisch, Parasit, Schwimmblasenwurm, Cystidicola farionis, Salmo trutta, Bachforelle, Seesaibling, Salvelinus alpinus
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Görlach, J., & Müller, R. (2005). Die Bestandssituation der Äsche (Thymallus thymallus) in Thüringen. Erfurt: Thüringer Ministerium für Landwirtschaft, Naturschutz und Umwelt.
Schlüsselwörter: Fisch, Äsche, Thymallus thymallus, Bestand, Kormoran
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Poschwitz, H. (2005). Die Bewertung von Fließgewässern nach der Europäischen Wasserrahmenrichtlinie (EG-WRRL) (Vol. 94).
Schlüsselwörter: Fisch, WRRL, Methode
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Weidinger, C., Patzner, R. A., & Riehl, R. (2005). Die Eier heimischer Fische – 15. Huchen – Hucho hucho (Linnaeus, 1758) (Salmonidae) (Vol. 58).
Schlüsselwörter: Fisch, Ei, Huchen, Hucho hucho, Fortpflanzung
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