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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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Gozlan, R. E., Feist, S. W., Martin, P., & Kent, M. L. (2005). Disease threat to European fish. Nature, 435(6), 1046.
Schlüsselwörter: Fisch, Leucaspius delineatus, Moderlieschen, Parasit, Sphaerothecum destruens
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Poschwitz, H. (2005). Gewässerökologische Bewertungen nach der Europäischen Wasserrahmenrichtlinie (EG-WRRL) (Vol. 30).
Schlüsselwörter: Fisch, Bewertung, WRRL
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Reimers, C., & Müller-Nothmann, S. - D. (2005). Omega-3-Fettsäuren in Therapie und Prophylaxe. Schweiz. Zschr. Ganzheitsmedizin, 17(7/8), 393?394.
Schlüsselwörter: Fisch, Lebensmittel, Omega-3-Fettsäure
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Honsig-Erlenburg, W. (2005). Zum Einfluss der Regenbogenforelle und des Bachsaiblings auf Bachforellenpopulationen (Vol. 58).
Schlüsselwörter: Fisch, Regenbogenforelle, Oncorhynchus mykiss, Bachsaibling, Salvelinus fontinalis, Bachforelle, Salmo trutta fario, Konkurrenz, Habitat, Fortpflanzung
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EELREP. (2005). FINAL REPORT: Estimation of the reproduction capacity of European eel.
Schlüsselwörter: Fisch, Aal, Anguilla anguilla, Fortpflanzung, Parasit, Wanderung
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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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Schadt, J. (2005). Die Verbreitung des amerikanischen Signalkrebses in der Itz, einem Nebenfluss des Mains, im Jahr 2004 (Vol. 56).
Schlüsselwörter: Krebs, Signalkrebs, Pacifastacus leniusculuc, Vorkommen
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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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Rulé, C., Ackermann, G., Berg, R., Kindle, T., Kistler, R., Klein, M., et al. (2005). Die Seeforelle im Bodensee und seinen Zuflüssen: Biologie und Management (Vol. 58).
Schlüsselwörter: Fisch, Fischerei, Seeforelle, Bewirtschaftung, Salmo trutta lacustris, Nahrung, Wachstum, Fortpflanzung, Habitat, Wanderung
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