4.4 Article

Acute Silver Catfish (Rhamdia quelen) Exposure to Chlorantraniliprole Insecticide

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SPRINGER
DOI: 10.1007/s00128-021-03315-3

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Fish; Pesticide; Plasma; ATPase; Cortisol

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  1. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)

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The study found that silver catfish exhibited biochemical and ionic changes after exposure to chlorantraniliprole insecticide, with these changes persisting even after 96 hours of recovery in clean water.
The aim of the current study is to investigate whether silver catfish (Rhamdia quelen) individuals exposed to commercial formulation of the chlorantraniliprole insecticide used in rice crops present changes in biochemical parameters. Fifty-four (54) silver catfish individuals were distributed in six units per tank (n = 6/repetition; triplicate/treatment) and subjected to the following treatments: T1-control, without insecticide; T2 (0.02 mu g/L of insecticide) and T3 (0.20 mu g/L of insecticide). Exposure time lasted 24 or 96 h, and it was followed by 96 h recovery in pesticide-free water. Results have indicated biochemical changes in cortisol, glucose, lactate and plasma protein levels, as well as few ionic changes in animals' gills during the exposure and recovery periods. Chlorantraniliprole incidence in water resulted in some biochemical changes in silver catfish specimens' plasma and gills throughout the acute exposure protocol (sub-lethal dose). Thus, chlorantraniliprole insecticide has caused osmoregulatory and/or biochemical imbalance in the investigated species under the herein adopted laboratory conditions; these changes did not get back to normal levels even after specimens were left to recover for 96 h in clean water.

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