Baltic Coastal Zone No. 7 • 2002/2003

parasites of roach rutilus rutilus (l.) from the lake Lebsko

Jolanta Morozinska-Gogol, Agnieszka Bachowska

Department of Ecology and Protection of the Sea,

Pomeranian Pedagogical University, Arciszewskiego St. 22b,

76-200 Slupsk, Poland

Baltic Coastal Zone No 7, pp. 75-80, ISSN 1643-0115

Abstract

A total of 270 roach (Rutilus rutilus L.) were caught in the Lebsko Lagoon (locally known as a coastal lake). Seven species (taxa) of parasites were recorded: Myxobolus sp., Pleistophora sp., Diplostomum spp., Posthodiplostomum cuticola, Tylodelphys clavata, Acanthocephalus anguillae and Piscicola geometra. Digenea were the predominant group of parasites. The highest prevalence of infection (66.3%) was observed in the case of P. cuticola and a little lower for Diplostomum spp. (55.9%). The highest mean intensity of infection was noted for T. clavata (46.7 ind.). Infection by remaining parasites was distinctly lower. The difference in prevalence of infection males and females of the roach was observed only in the case of Pleistophora sp. (males 11.5% and females 4.3%).

Key words: parasites, roach, Lebsko lake