Introduction: A piscivorous fish European perch (Perca fluviatilis) is present in all types of lakes and brackish waters in Poland. Previous ichthyoparasitological surveys revealed broad spectrum of endohelminths in perch from different aquatic environments. Among them, detection of Diphyllobothrium sp. and Dibothriocephalus latus (syn. Diphyllobothrium latum) in the Pomeranian Bay is of particular interest, since D. latus is one of the causative agents of diphyllobothriasis, fish-borne parasitic zoonosis. Besides, D. latus eggs were previously detected in coprological samples of otter, wolf and lynx from the Białowieża Primeval Forest.

Aim: To conduct parasitological examinations of European perch from the Pomeranian Bay in order to detect the spectrum of its endohelminths and to provide a pilot study on helminths of perch from different water bodies in the Białowieża Primeval Forest. Due to zoonotic character of D. latus, we have focused our attention to this tapeworm.

Results: The larvae of tapeworm Triaenophorus nodulosus and thorny-headed worm Acanthocephalus lucii were detected in perch from the Pomeranian Bay. In perch from different localities in the Białowieża Primeval Forest, T. nodulosus, A. lucii and tapeworm Proteocephalus percae were detected. D. latus plerocercoids were found neither in musculature nor in peritoneal cavity and other internal organs of any of the fish examined from both studied localities in Poland.

Conclusion: Future screening implementing morphological and molecular markers is needed in order to understand the current distribution of D. latus in Europe.

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http://dx.doi.org/10.2478/s11686-019-00087-zDOI Listing

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