title: Trematodes genus Apophallus (Trematoda: Heterophyidae) in the fauna of multicellular parasites Perca fluviatilis (Perciformes, Actinopterygii) in the Volga Delta
abstract: The living conditions of aquatic organisms in the Volga-Caspian Sea Shipping Canal are determined by a high level of complex multifactor anthropogenic load. As a link in a unified international transport system, the canal serves as an invasive corridor for the settlement of alien organisms, including parasites. The fauna of multicellular parasites Perca fluviatilis (Perciformes) in the canal area was studied. 6 taxa of parasitic organisms have been registered. The nematode Eustrongylides excisus
journal: VESTNIK OF ASTRAKHAN STATE TECHNICAL UNIVERSITY SERIES FISHING INDUSTRY