Observations on helminth parasites in endemic and native fish from Susurluk Basin, Türkiye using a genetic- molecular approach: With new host and geographical records

Abstract

In this study, a total of 50 individuals of three endemic fish species, namely Chondrostoma angorense (n=13), Oxynoemacheilus simavicus (n= 9) and Oxynoemacheilus angorae (n= 12), and one native fish species, Silurus glanis (n=16) were examinated for helminth parasites between February 2021 and December -2021 from Nilüfer stream and Simav stream, in the northwest Anatolian region of Turkey. A total of 5881 parasite species of five helminths were found in four of the fish species consisting of 2 monogenean: Paradiplozoon homoion (in C. angorense) and Ancylodiscoides vistulensis (in S. glanis), one digenean: Clinostomum complanatum metacercariae (in C.angorense), 2 nematodes: Contracaecum rudolphii B ( in C.angorense, O. simavicus and O. angorae) and Eustrongylides excicus larvae (in S. glanis). A. vistulensis was found to be the highest number compared the remaining parasite species. The present work reported for the first time the occurrence of P. homoion, C. complanatum metacercariae and C. rudolphii B in C.angorense, and C. rudolphii B in O. simavicus and O. angorae. This depicted new host records and geographical distribution for those five helminth parasites.