Authors
Janina Dziekońska-Rynko
Department of Zoology, Faculty of Biology and Biotechnology, University of Warmia and Mazury, Olsztyn, Poland
Jerzy Rokicki
Department of Invertebrate Zoology and Parasitology, University of Gdansk, Gdansk, Poland
Katarzyna Mierzejewska
Department of Biology and Fish Culture, Faculty of Environmental Sciences and Fisheries, University of Warmia and Mazury, Olsztyn, Poland
Bogdan Wziątek
Department of Biology and Fish Culture, Faculty of Environmental Sciences and Fisheries, University of Warmia and Mazury, Olsztyn, Poland
Aleksander Bielecki
Department of Zoology, Faculty of Biology and Biotechnology, University of Warmia and Mazury, Olsztyn, Poland