The acetylcholine content of various organs of two teleostean fish, Heteropneustes fossilis and Clarias batrachus has been estimated biologically on the eserinized frog rectus muscle. The acetylcholine content in the stomach of both the fish was 0.341 and 0.22 mug/g, respectively. Values were lower than those of other parts of the alimentary tract. The ilia contained the most acetylcholine, bei...

Studies were conducted to determine the effects of high dietary ascorbic acid (vitamin C) on growth performance and body composition of a commercially important Asian catfish, Clarias batrachus. During experimental trial in the laboratory condition, the change in growth and feed utilization by the Clarias batrachus fed on three different Vitamin C level have been assessed by the determination o...

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Different types of haematocytes found in the peripheral blood of walking catfish Clarias batrachus, have been characterized and identified using morphological, morphometric and cytochemical techniques. These cells are: erythrocytes, reticulocytes, large and small lymphocytes, thrombocytes, monocytes and polymorphonuclear leucocytes (neutrophils).

Throughout this investigation the effects of three commonly used agricultural pesticides, endosulfan (an organochlorine), malathion (an organophosphorous) and carbaryl (a carbamate) were studied on circulating levels of T4, T3, and the T3/T4 ratio of the fresh water catfish Clarias batrachus during the vitellogenic ( formation of the yolk of an egg) and post-vitellogenic phases of their annual ...

Fish species may act as suitable hosts for trypanosomes. Clarias batrachus, Channa punctatus and Wallago attu were found infected with Trpanosoma batrachi , T. aligaricus, and T. attii, The vulnerable fishes were divided into six groups: Group I Clarias batrachus (IA control, IB infected), Group II Channa punctatus (IIA control, IIB infected) and Group III Wallago attu (IIIA control, IIIB infec...

An inhibitive assay of insecticides using Acetylcholinesterase (AChE) from the local fish Clarias batrachus is reported. AChE was assayed according to the modified method of Ellman. Screening of insecticide and heavy metals showed that carbofuran and carbaryl strongly inhibited C. batrachus AChE. The inhibition concentration (IC) IC50 values (and the 95% confidence interval) for both carbofuran...

An 8-week experiment was conducted to determine the cobalt and zinc requirements of fry of seabass (Lates calcarifer) and catfish (Clarias batrachus). Fifteen diets for each fish were formulated with varying concentrations of cobalt and zinc, alone and in combination. The control diet was not supplemented with cobalt or zinc. The diets for L. calcarifer had 45% protein, while the diets for C. b...

Raji, A.R. and Norozi, E. 2010. Distribution of external taste buds in walking catfish (Clarias batrachus) and piranha (Serrasalmus nattereri). J. Appl. Anim. Res., 37: 49-52. To determine the distribution of external taste buds (TB), 3 specimen each of the two species of aquarium fishes: Walking catfish (Claris batrachus) and Piranha (Serrasalmus nattereri), were studied. In walking catfish TB...

The present investigation includes the blood biochemical alterations in chronic (30 days) exposure of airbreathing fish, Clarias batrachus (Linn.) induced by sublethal concentration (2.46 mg/L) inorganic herbicide, glyphosate. Significant changes were observed properties form hyperglycemia, hypoproteinemia and hypercholesterolemia. study therefore points towards a severe metabolic dysfunction r...