Adverse Effect of Insecticides on Various Aspects of Fish’s Biology and Physiology

Assessment of some Heavy Metals in Water and Tissues of Tilapia Spp. Collected from Wadi El-Rayan Lakes. El-Fayoum Egypt and their Impacts on some Biochemical Parameters

“…collected from Wadi El-Rayan shown in Table (4). Blood glucose is a sensitive and reliable indicator of pollutants causing environmental stress in fish and a sensitive indicator of environmental stress for any chemical pollutants (Banaee, 2012). In the present study, the serum glucose level of Tilapia Spp.fish collected from different sites and seasons in Wadi EL-Rayan lakes showed a highly significant increase (P≤0.01) as compared to control groups.The observed increase serum glucose concentration (hyperglycemia) indicated that fish generated more glucose to produce the energy to combat the stress induced by environmental pollution.…”

Physiological Dysfunction in Fish After Insecticides Exposure

“…Fish like other aquatic organisms may be exposed to a great range of insecticides during the course of their life cycle. In fish, different insecticides can be absorbed through gills, skin or alimentary ducts (Schlenk, 2005;Banaee, 2012). Fishes are particularly sensitive to environmental contamination of water.…”

Physico-Chemical Characteristics and Physiological Changes in Oreochromis Niloticus From Rosetta Branch of the River Nile

“…Blood glucose is a sensitive and reliable indicator of environmental stress in fish. 43 The hyperglycemic response illustrated in the present study indicated that, fish generated more glucose to produce the energy used in combating the stress induced by the environmental pollution, that possibly due to the induction of hepatic gluconeogenic enzymes and increasing substrate supply by cortisol hormones, 44 elevate the breakdown of liver glycogen or the synthesis of glucose from adipose tissue and others extrahepatic tissues, provide liver with lactate and amino acids, which serve as gluconeogenic substrates for hepatocytes to synthesize more glucose. 41 Moreover the pancreatic cell injury caused by pollutants in water enhanced glycogen breakdown in liver, and reduced insulin activity.…”

“…The majority of plasma proteins which are synthesized in the liver are used as indicators of liver impairment. 43 Also, serum albumin in fish is involved in metabolism and plays an important role in transport functions of exogenous chemicals and endogenous metabolites. Thus, serum albumin is considered as a diagnostic tool which reflects the liver function, metabolic status and stress conditions in fishes.…”