Histopathological Study of Infection with helminthic parasites Intestinal of Fishes Culture in Tikrit City, Iraq

Collected in the period between September 2017 to March 2018 a total of 120 Cyrpinus carpio fishes from one of fish farms in Tikrit city. These fishes were examined to reveal that infected worm intestinal. It has been recorded the total percentage infection 6.6%. The results find out that three species of worms involving two cestoda Eubtherium salvelini, Schyzocotyle acheiognathi with percentage of infection (1.6, 3.3)% respectively. One specie acanthocephalan Neoechinorhynchus iraqensis with percentage of infection 1.6%. The current study included histopathological changes on the intestine which infected with parasitic worms (cestoda and acanthocephalan). It has been distinguished the intestinal villi appeared with epithelial degeneration and cellular debris in the luman of intestinal, also the basement membrane of this epithelium was displaced from the core of villus, cavation in muscular layer, complete sloughing of epithelium in intestinal caviaty and white blood cells infiltaration especially in lymphocyte cells with slough cells of intestinal cavity in the case of infection with acanthocephan.