Pathological Investigations in Tench (Tinca tinca (L., 1758)) Naturally Infected with Ligula intestinalis Plerocercoids.

The aim of this study was to examine the pathological findings of 30 naturally infected tench (Tinca tinca) with Ligula intestinalis plerocercoids from Golhisar Lake (Burdur) in Mediterranean Area of Turkey. Clinically and macroscopically, poor and irregular swimming, hemorrhages at the bases of fins and around the anus, the presence of the plerocercoids in the viscera together with perivisceral hemorrhages and distension of abdomen were generally observed in the diseased fish. Microscopically, hemorrhages, necrosis and mononuclear cell infiltrations were seen in the viscera invaded by plerocercoids. In conclusion, the cestode Ligula intestinalis plerocercoids' pathological effects on the tench tissues were widely evaluated for the first time in Turkey. [ABSTRACT FROM AUTHOR]