Effects of the organophosphate pesticide Folidol 600 (R) on the freshwater fish, Nile Tilapia (Oreochromis niloticus)

Author(s)

Barbieri, Edison ^[1] ; Alves Ferreira, Leandro Augusto ^[2]

Affiliation

^[1] Inst Pesca APTA SAA SP, BR-11990000 Sao Paulo - Brazil

^[2] Inst Pesca, Mestrando Programa Posgrad, BR-05001900 Sao Paulo - Brazil

• Document type: Journal article
• Source: PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY; v. 99, n. 3, p. 209-214, MAR 2011.
• Web of Science Citations: 28

Abstract

Nile Tilapia (Oreochromis niloticus) juveniles were exposed to different concentrations of Folidol 600 (R) in static toxicity tests. The 24, 48, 72 and 96 h LC(50) values of Folidol 600 (R) to O. niloticus were 17.82, 8.91, 4.00 and 2.70 mg L(-1), respectively. The values of hematological parameters increased, and inhibition of cholinesterases activity (AChE, BChE and PChE) in plasma of fish exposed to the higher concentrations of pesticide reached 94%. Furthermore, the exposure of Tilapia to Folidol 600 (R) caused an increase of 4%, 20% and 38.4% in oxygen consumption at 0.1, 0.5 and 1.0 mg L(-1), respectively. However, exposure to 2.5, 5.0 and 10 mg L(-1) caused a decrease of 33.6%, 35.2% and 42.4% in oxygen consumption relative to the control. The ammonium excretion of fish exposed to 0.0, 0.1, 0.5, 1.0, 2.5, 5.0 and 10.0 mg Folidol 600 (R)/L was 0.12, 0.18, 0.30, 0.33, 0.37, 0.36 and 0.33 mu g/g/min, i.e., 50%, 150%, 175%, 208%, 200% and 175% increase, respectively, relative to the control. Published by Elsevier Inc. (AU)