Species richness and diversity of the parasites of two predatory fish species - perch (Perca fluviatilis Linnaeus, 1758) and zander ( Sander lucioperca Linnaeus, 1758) from the Pomeranian Bay

摘要: Pomeranian Bay as an ecotone is a transition zone between two different biocenoses, which characterized by increase in biodiversity and species density. Therefore, destination of finding reproductive migrations fish from the rivers entered area. The aim study was to compare parasitic fauna predatory Bay, collected same fishing grounds at period. A total 126 studied (53 perches 73 zanders) were summer 2013. Parasitological examinations included: skin, fins, gills, vitreous humour lens eye, mouth cavity, body cavity internal organs. Apart prevalence intensity infection (mean, range) parasite communities both compared. European perch zander infected with parasites five taxonomic units. most numerous Diplostomum spp. Bucephalus polymorphus zander. ranged 5.7% (Diphyllobothrium latum) 22.3% (Diplostomum spp.) for 1.4% (Ancyrocephalus paradoxus, Hysterothylacium aduncum) 12.3% (Bucephalus polymorphus). Different composition likely due biology species.