Toxicity of organophosphate and synthetic pyrethroid pesticides on rohu fish (Labeo rohita) fingerlings

Sangita Priyadarshni^a, Dinesh Yadav^b & Arun Kumar^a*
^aUniversity Department of Zoology, B. N. Mandal University, Madhepura, Bihar, India
^bDepartment of Zoology, T. P. College, Madhepura, Bihar, India
Received : 08^th December, 2022 ; Revised : 09^th January, 2023

Abstract– The aim of the experiment was to evaluate the toxicity of organophosphate pesticides (chlorpyrifos) and synthetic pyrethroid pesticides (fenpropathrin) to Rohu fish (Labeo rohita) fingerlings. The LC₅₀ for Rohu fish (Labeo rohita) fingerlings was 5.70, 0.5, 0.015 and 0.26 ppm for chlorpyrifos, methyl parathion, fenvalerate and fenpropathrin, respectively. These pesticides are highly sensitive to fingerlings and is alarming as it is commonly used in the agricultural fields and may affect the fisheries sector.

Key words: Pesticides, Methyl parathion, Fenvalerate, Rohu fish (Labeo rohita) fingerlings, ecosystem.

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