Paradiplozoon magnum (Monogenea: Diplozoidae) From Some Species of Cyprinid Fish in Tigris River, Iraq


From June 2013 to April 2014, a total of 87 specimens of Cyprinid fish (including 13 Capoeta trutta, 41 Carasobarbus luteus, 17 Cyprinion macrostomum, 7 Cyprinus carpio and 9 Hemigrammocapoeta elegans) were collected from the Tigris River passing through Tikrit City (34° 37´ N, 43° 41´ E) at Salah Al-Deen Province, Iraq. The gills of these fishes examined microscopically for determination of monogenean parasites belonging to the family Diplozoidae. The present investigation revealed the occurrence of Paradiplozoon magnum from C. trutta and H. elegans with prevalence (mean intensity) of infection 15.38% (1.5) and 44.44% (2.25), respectively. C. luteus, C. macrostomum and C. carpio were negative for monogenean parasitic infections. This is the first record of P. magnum in Iraq. A description and morphometrics of this parasite are presented herein.