DefinePK

Abstract

Pesticides are substances, either biological or chemical, that are used to eradicate, suppress, or manage pests like weeds, ants, cockroaches, and insects. Besides the target organism, pesticides can also affect non-target organisms. The present research was aimed at finding the lethal concentrations and harmful effects of Cobox (pesticide) on the behaviour of Salmo trutta fario. It has been determined that Cobox is extensively used in different regions of District Swat, Pakistan. Fish samples were stocked in aquaria based on body weight and acclimatized for four weeks. Light light-dark period was kept as 12:12 hours was kept. To determine  LC (lethal concentration; LC0, LC50 and LC100), the pesticide was added in different amounts to each aquarium. The LC0 for 24, 48, 72 and 96 hours were determined as 40, 17.5, 10 and 7.5 mg/L, respectively. The LC50 values for 24, 48, 72 and 96 hours were found as 50, 22.5, 17.5 and 10 mg/L, respectively. The LC100 values for 24, 48, 72 and 96 hours determined were 60, 30, 25 and 15 mg/L, respectively. In response to the poisonous effect of the Copper oxychloride, fish behaviour changed from normal to abnormal, including jumping out of the aquarium, marks on skin, losing balance, secreting mucus all over in bodies, moving their gills rapidly and disrupting swimming. It was concluded that Cobox affects the mortality and behavioural responses of Salmo trutta fario.