Effect of Beta-Cyfluthrin Pesticide on Zebra Mussel (Dressienna polymorpha)

In this study, some biochemical responses of Beta-Cyfluthrin (β-CF), which is a commercial insecticide in Dreissena polymorpha, were investigated. The 96 hour LC50 value of β-CF on D. polymorpha was calculated as 509.62 µg L-1. D. polymorpha was exposed to subletal concentrations (1/16, 1/8 and 1/4 of LC50 value: 32, 64 and 128 µg L-1) of β-CF for 24 and 96 hours. Malondialdehyde (MDA) and reduced glutathione (GSH) levels and Acetylcholinesterase (AChE) enzyme activities were determined in D. polymorpha individuals. In D. polymorpha exposed to β-CF, MDA levels increased compared to control and with increasing concentration. It was determined that GSH level decreased and AChE activity was inhibited compared to control and with increasing concentration. In conclusion, exposure to β-CF resulted in increased oxidative damage and has been found to cause neurotoxicity even at low concentrations.