Interaction of potash and decis in the ecophysiology of a freshwater fish Oreochromis mossambicus

Interaction of potash and decis in the ecophysiology of a freshwater fish, Oreochromis mossambicus, was studied. It was found that 300, 550 and 700 mg L −1 of potash were sublethal (LC 0), median lethal (LC 50), and toxic (LC 100) to O. mossambicus for 96 h exposure, respectively. For decis, 96 h LC...

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Bibliographic Details
Published in:Ecotoxicology and environmental safety 2007-02, Vol.66 (2), p.154-158
Main Authors: Vijayavel, K., Balasubramanian, M.P.
Format: Article
Language:English
Subjects:
Acid Phosphatase - blood
Acid Phosphatase - metabolism
Agnatha. Pisces
Alkaline Phosphatase - blood
Alkaline Phosphatase - metabolism
Animal, plant and microbial ecology
Animals
Applied ecology
Biological and medical sciences
Decis
Drug Interactions
Eating - drug effects
Ecotoxicology, biological effects of pollution
Feeding energetics
Fertilizers - toxicity
Freshwater
Fundamental and applied biological sciences. Psychology
General aspects
Hydroxides - toxicity
Insecticides - toxicity
Intestinal Absorption - drug effects
Liver - drug effects
Liver - enzymology
Muscles - drug effects
Muscles - enzymology
Nitriles - toxicity
Oreochromis mossambicus
Phosphatases
Potash
Potassium Compounds - toxicity
Pyrethrins - toxicity
Survival
Tilapia - growth & development
Tilapia - metabolism
Transaminases
Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
Water Pollutants, Chemical - toxicity
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Summary:Interaction of potash and decis in the ecophysiology of a freshwater fish, Oreochromis mossambicus, was studied. It was found that 300, 550 and 700 mg L −1 of potash were sublethal (LC 0), median lethal (LC 50), and toxic (LC 100) to O. mossambicus for 96 h exposure, respectively. For decis, 96 h LC 100, LC 50, and LC 0 was 0.4, 0.25, and 0.1 mg L −1, respectively. Sublethal concentrations of potash and decis were exposed to fishes individually and in combination for 28 days. The results revealed that the combined effect of these chemicals was more highly toxic to food intake, growth, and conversion efficiencies than the individual chemicals. The marker enzymes (acid phosphatase, alkaline phosphatase, aspartate transaminase, alanine transaminase) were also analyzed in blood, liver and muscle. The enzyme activities were decreased in liver and muscle. On the other hand, serum exhibited increased activities of marker enzymes. The results were tested statistically and interpreted accordingly.
ISSN:0147-6513
1090-2414
DOI:10.1016/j.ecoenv.2005.12.005