Alkan, Z.Kaval Oğuz, E.Regaib Oğuz, A.2025-05-102025-05-1020230275-754010.1080/02757540.2023.22634442-s2.0-85173937062https://doi.org/10.1080/02757540.2023.2263444https://hdl.handle.net/20.500.14720/3305The Van fish is an endemic carp species living in Lake Van, one of the largest soda lakes in the world. Fluvalinate is a pesticide used extensively in the Lake Van basin. In the present study, the effects of sublethally applied fluvalinate on mucous cells in Van fish gill tissue after 48, 72, and 96 h were determined histochemically. Histopathological lesions were observed in the gills of the fish exposed to fluvalinate in a time-dependent manner. The concentrations of neutral glycoconjugates, acidic glycoconjugates, sulfated acidic glycoconjugates, and strongly acidic glycoconjugates in the mucous cells increased in the gills of the Van fish during the exposure period. At the same time, the area and number of mucous cells increased during fluvalinate exposure. As a result, fluvalinate caused an increase in mucous secretion and content in Van fish gills. © 2023 Informa UK Limited, trading as Taylor & Francis Group.eninfo:eu-repo/semantics/closedAccessFluvalinateGlycoconjugateHistopathologyPesticideTeleostArticle398Q3Q2894907