Threats and protection of freshwater fishes in Poland
In: Netherlands Journal of Zoology. E.J. Brill: Leiden. ISSN 0028-2960; e-ISSN 1568-542X, meer
Ook verschenen in:Osse, J.W.M.; Hollingworth, C.E. (Ed.) (1992). The Threatened World of Fish: Proceedings of the 7th International Ichthyology Congress, The Hague (The Netherlands), August 26-30, 1991. Netherlands Journal of Zoology, 42(2-3). E.J. Brill: Leiden. 524 pp., meer
|  |
| Abstract |
After wold war II two fish species (Acipenser sturio and Salmo salar) became extinct in Poland. At present there are 8 most endagered species, mostly anadromous and ecologically highly specialized (Petromyzon marinus, Eudontomyzon mariae, Lampetra fluviatilis, Salmo trutta lacustris, Pelecus cultratus, Moroco percnurus, Gobio kessleri and G. albipinnatus). As much as 58.9% of fishes and lampreys are threatened to various extents. Conservation of species that are going extinct depends upon artificial spawning and stocking, with simultaneous improvement of water quality and prevention of destruction of aquatic habitats. |
|
