Parasite influence on the round goby Neogobius melanostomus (Pallas, 1814) from the coastal waters of Sevastopol

Abstract

Present investigation was carried out to study the histopathological alterations induced by parasites in vital organs of goby Neogobius melanostomus (Gobiidae) that was caught in Apollonova Bay in April 2020. The parasites (trematode, microsporidia, myxosporidia, nematoda, and coccidia) were revealed in the skin, gills, kidneys and gastrointestinal tract of fish. Most histopathological changes in the round goby organs are reversible and/or have a local character. Meanwhile, trematodes in the kidneys and protozoan parasites in the gastrointestinal tract reduce the fish health status of fish