Dumlu, Ahmet BurakGuner, Utku2024-06-122024-06-1220201018-46191610-2304https://hdl.handle.net/20.500.14551/22722Nickel, which has a wide usage area throughout history, spreads throughout the ecosystem. Although Ni is low in the ecosystem, its usage continues to increase due to human use. Nickel is used in different industrial areas and released into nature from the atmosphere, from underground and above groundwater resources to aquatic ecosystems through erosion. Acute and some chronic toxic effects of Ni on Gambusia holbrooki, mosquito biological control fish, were investigated. Acute toxicity of Ni was determined by the probit analysis method and 96 hour lethal dose test result was 6.811 mg/l for G. holbrooki .During acute and chronic toxicity experiments, some behavioral changes in concentration, water column distribution, clustering and mobility and some physical changes such as blood supply to the gills and blackening of the outer epithelial tissue were observed in test animals.eninfo:eu-repo/semantics/closedAccessNickelMosquitofishGambusia HolbrookiAcute ToxicityLC50Lethal DoseLethal ConcentrationHeavy-MetalsCyprinus-CarpioAcute ToxicityWaterFishZnCuTissuesCopperRiverArticle29973427348Q4WOS:000629178300019