First finding of roundworms (Contracaecum sp.) in Prussian carps (Carassius gibelio Bloch, 1782) in Lake Sakada？

Sa？etak A sampling of Prussian carps (Carassius gibelio Bloch, 1782) was conducted in Lake Sakada？ located within the Nature Park Kopa？ki rit. Of 111 captured Prussian carps, 9 revealed the presence of a parasite, 3rd larvae stadium of roundworm Contracaecum sp. The prevalence was 8 %. A total of 3822 roundworms were isolated while infection intensity ranged from 7 to 1078 roundworms per fish (average of 424.66 roundworms per fish). Roundworm abundance and total biomass positively correlated with fish mass (rs = 0.633333, p ？ 0.05; rs = 0,666667, p ？ 0.05). The Fulton's condition factor (CF) for Prussian carps without parasites was on average 2.275, and for Prussian carps infected by roundworms 1.635. Although the recorded condition factor was lower for infected samples, no statistically significant difference was determined for uninfected Prussian carps