Latitudinal Variation of Allozyme Frequencies in Populations of Two Freshwater Isopods in Western Europe |
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| Affiliation: | 1. Faculty of Biology, University of Duisburg-Essen, Essen, Germany;2. Department of River Ecology and Conservation, Senckenberg Research Institute and Natural History Museum Frankfurt, Germany;3. Institute for Natural Resource Conservation, Christian-Albrechts-University Kiel, Germany;4. Conservation Ecology Center, Smithsonian''s National Zoo and Conservation Biology Institute, Front Royal, VA, USA;5. Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Essen, Germany;6. Leibniz Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany;7. Geography Department, Humboldt-Universität zu Berlin, Berlin, Germany;1. Ruhr University Bochum, Faculty of Biology and Biotechnology, Theoretical and Applied Biodiversity Research, Bochum, Germany;2. Aquatic Ecology, University of Duisburg-Essen, Essen, Germany;3. Centre for Water and Environmental Research (ZWU), Essen, Germany;4. Department of Plankton and Microbial Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Stechlin, Germany;5. Department of Ecology, Berlin Institute of Technology (TU Berlin), Berlin, Germany;6. Aquatic Ecosystem Research, University of Duisburg-Essen, Essen, Germany;7. Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Landau, Germany;8. Department of Animal Ecology, Ruhr University Bochum, Evolution and Biodiversity, Germany;9. Biodiversity, University of Duisburg-Essen, Essen, Germany;10. Department of River Ecology and Conservation, Senckenberg Research Institute and Natural History Museum Frankfurt, Gelnhausen, Germany;11. Faculty of Biology, University of Duisburg-Essen, Essen, Germany;12. Environmental Microbiology and Biotechnology, University of Duisburg-Essen, Essen, Germany;13. Phycology, University of Duisburg-Essen, Essen, Germany;14. Helmholtz Centre for Environmental Research - UFZ, Department River Ecology, Magdeburg, Germany;15. Eukaryotic Microbiology, University of Duisburg-Essen, Essen, Germany;p. Natural History Museum, University of Oslo, Oslo, Norway;q. University of Cologne, Institute of Zoology, Cologne, Germany;r. Department of Hydrology and Water Resources Management, Institute of Natural Resource Conservation, CAU Kiel, Germany;s. Leibniz Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany;t. Humboldt-Universität zu Berlin, Berlin, Germany;u. Instrumental Analytical Chemistry, University of Duisburg-Essen, Essen, Germany;v. Aquatic Microbial Ecology, University of Duisburg-, Essen, Germany;w. Ecological Modelling, University of Duisburg-Essen, Essen, Germany;1. Laboratori d''Ictiologia Genètica (LIG), University of Girona, Edifici AC-LEAR, Carrer M. Aurèlia Capmany, 40, 17003 Girona, Spain;2. Dept. of Bioinformatics and Genetics, Swedish Museum of Natural History, Box 50007, 104 05 Stockholm, Sweden;3. GRECO, Institute of Aquatic Ecology, University of Girona, 17003 Girona, Spain;4. IRTA Marine and Continental Waters, Carretera Poble Nou, km 5.5, 43540 Sant Carles de la Ràpita, Spain |
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| Abstract: | Populations of the freshwater isopods, Proasellus meridianus Racovitza and P. coxalis Dollfus were found to be polymorphic at loci coding for the enzymes glucose phosphate isomerase (GPI) and phosphoglucomutase (PGM). PGM allele frequencies in populations of both species were significantly associated with latitude as has been previously reported for the closely related Asellus aquaticus (L.). Co-variation of PGM allele frequencies was also found in sympatric populations of P. meridianus and A. aquaticus. Significant interpopulation variation in GPI allele frequencies occurred in P. coxalis but not P. meridianus, however, this variation was not associated with latitude. |
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