Ugurlu, PelinUnlu, ErhanSatar, Elif Ipek2024-04-242024-04-2420151382-66891872-7077https://doi.org/10.1016/j.etap.2015.01.013https://hdl.handle.net/11468/15393Neonicotinoids are a new group of insecticides, and little is known about their toxicity to nontarget freshwater organisms an potential effects on freshwater ecosystems. The aim of this study is to establish the acute toxicity and histopathological effects of thiamethoxam-based pesticide on the gill tissue of Gammarus kischineffensis. In this study G. kischineffensis samples were exposed to 2.5, 5, 7.5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90 and 100 mg/l of commercial grade thiamethoxam for 96 h. The 24, 48, 72 and 96h LC50 values were determined as 75.619, 23.505, 8.048 and 3.751 mg/l respectively. In histopathological study the individuals were exposed to 0.004, 0.04 and 0.4 mg/l thiamethoxam concentrations for 14 days. The results showed that the most common changes at all doses of thiamethoxam were vacuolization and hemostatic infiltration in the gill tissue of G. kischineffensis. (C) 2015 Elsevier B.V. All rights reserved.eninfo:eu-repo/semantics/closedAccessThiamethoxamGammarus KischineffensisAcute ToxicityHistopathologyLc50 ValueArticle392720726WOS:0003539299000282-s2.0-849231040162571084910.1016/j.etap.2015.01.013Q1Q2