Occurrence of Monogenea in Italian freshwater fish (Po river basin).

Sixteen Monogenean species were found on the skin and gills of 10 different fish species collected from north Italian water bodies. Cleidodiscus pricei from Ictalurus melas; Dactylogyrus alatus from Alburnus alburnus; D. anchoratus, D. formosus and D. vastator from Carassius carassius; D. difformis from Scardinius erythrophthalmus; D. rutili from Rutilus aula; D. tincae and Gyrodactylus gasterostei from Tinca tinca; D. ergensi from Leuciscus cephalus and Telestes muticellus; D. vistulae and Paradiplozoon rutili from Leuciscus cephalus; D. extensus and G. katharineri from Cyprinus carpio; G. lucii and Tetraonchus monenteron from Esox lucius. All species are new records for Italy with the exception of D. difformis, D. ergensi, D. vistulae and T. monenteron.