Some Monogeneans from Gills of Three Freshwater Fish Species and the First Record of Ligophorus heteronchus Euzet Suriano, 1977 in Iraq from Gills of Liza abu (Heckel, 1843)

The present study reports the occurrence of five species of monogeneans on gills of three freshwater fishes which were collected from fish markets in Baghdad city. These parasites included Dactylogyrus achmerowi, D. anchoratus and D. dulkeiti from Cyprinus carpio, D. lenkorani from Mesopotamichthys sharpeyi and D. varicorhini from Carasobarbus luteus. In addition to these parasites, the monogenean Ligophorus heteronchus was recorded from gills of Liza abu. The occurrence of the later parasite in the present study represents its first record in Iraq. The description and measurement of L. heteronchus were given.