Subacute Intoxication of a Deltamethrin‐Based Preparation (Butox^® 5% EC) in Monosex Nile Tilapia, Oreochromis niloticus L.

Abstract

Abstract:The monosex Nile tilapia, Oreochromis niloticus L., was exposed to subacute concentration (1.46 μ g/l) of a pyrethroid insecticide, deltamethrin for 28 consecutive days. Behavioural, clinical, haematological, serum biochemical and histopathological consequences were assayed at a regular interval of 7 days. The abnormal behavioural responses and toxic symptoms were described. Exposure to deltamethrin not only significantly decreased lymphocyte and basophile percentages, total leucocytic and total erythrocytic counts, haemoglobin percentage and packed cell volume value, but also caused serious effects in the form of hypoproteinaemia, hypoalbuminaemia, hypercholesterolaemia, hyperglycaemia and significantly increased serum aspartate aminotransferase, alanine aminotransferase and alkaline phosphatase activities. Moreover, the histopathological results indicated that the haemobiotic organs were affected by deltamethrin, primarily liver and gills. Our data suggest that subacute exposure to deltamethrin exerts a serious metabolic distress on the fish corresponding to the exposure period. In addition, the assayed parameters and histopathological findings can be as good biomarkers of pyrethroid ecosystem pollution.

Effects of Short or Long-Term Exposure of Dithiopyr on Certaine Blood, Growth and Tissue Biochemical Parameters in Catfish (Clarias garipinus)

“…This elevation could be indicated tissue damage which may be due to disturbance in normal physiological and biochemical processes such as Kreb's cycle, TCA cycle and subsequent leakage of this enzyme from the liver cytosol through membrane into the blood stream (Palas, 2014). The present result was in agreement with the results of Jee et al(2005) in fish Sebastes schlegeli, of Borges et al (2007) in fish Rhamdia quelen and of El-Sayed and Saad (2008) in Tilapia Oreochromis niloticus who observed increased activity of serum ALT, AST and LDH in fish, exposed to pesticides.…”

“…The stress hormone cortisol has been shown to increase glucose production in fish, by both gluconeogenesis and glycogenolysis, and likely play an important role in the stress-associated increase in plasma glucose concentration (Sweilum, 2006;El-Sayed and Saad, 2008). Also, Matos et al (2007) reported that hyperglycemic was indication of a disruption in carbohydrate metabolism, possibly due to enhanced glucose 6-phosphatase activity in liver, elevated breakdown of liver glycogen, or the synthesis of glucose from extrahepatic tissue proteins and amino acids.…”

Effect of Profenofos on Rohu Fish (Labio rohita): A Fish Widely Cultivated In Rural Areas of India

“…Highly significant decrease in RBCs counts, Hb content and Hct % was noticed during experimental periods on Nile tilapia. Similar observations were mentioned after exposure of Nile tilapia to organophosphate pesticides (Ibrahim et al, 2005;El-Sayed et al, 2007;El-Sayed and Saad, 2008). Such increase in leucocyte counts is belived to be the alteration in defence mechanism.…”

Effects of a cypermethrin-based pesticide on early life stages of common carp (Cyprinus carpio L.)

“…Treated larvae exhibited dark pigmentation at the end of the trial, as has been observed with exposure to pyrethroids (Ural and Saglam 2005;El-Sayed and Saad 2008;Richterova et al 2014).…”