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Pyrethroid Induced Respiratory Changes in Labeo rohita


Affiliations
1 Department of Zoology, Yashwantrao Chavan Institute of Science, Satara-415 001, Maharashtra, India
2 Department of Zoology, Shivaji University, Kolhapur-416 004, Maharashtra, India
 

The acute (96 hrs) effects on exposure to sublethal and lethal concentrations of synthetic pyrethroids, fenvalerate 20 EC and cypermethrin 25 EC were studied by a static bioassay method on the fingerlings of a freshwater carp, Labeo rohita. The sublethal concentrations of fenvalerate and cypermethrin were 2.7 ppb and 3 ppb while lethal concentrations were 4.8 ppb and 5 ppb respectively. The rate of oxygen consumption was determined at these concentrations after every 24 hours. It was found that, as compared to the control, there was change in the rate of oxygen consumption. In general, there was increase in the rate of oxygen consumption due to the effect of both the pyrethroids.
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  • Pyrethroid Induced Respiratory Changes in Labeo rohita

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Authors

V. Y. Deshpande
Department of Zoology, Yashwantrao Chavan Institute of Science, Satara-415 001, Maharashtra, India
D. V. Muley
Department of Zoology, Shivaji University, Kolhapur-416 004, Maharashtra, India
M. P. Bhilave
Department of Zoology, Shivaji University, Kolhapur-416 004, Maharashtra, India

Abstract


The acute (96 hrs) effects on exposure to sublethal and lethal concentrations of synthetic pyrethroids, fenvalerate 20 EC and cypermethrin 25 EC were studied by a static bioassay method on the fingerlings of a freshwater carp, Labeo rohita. The sublethal concentrations of fenvalerate and cypermethrin were 2.7 ppb and 3 ppb while lethal concentrations were 4.8 ppb and 5 ppb respectively. The rate of oxygen consumption was determined at these concentrations after every 24 hours. It was found that, as compared to the control, there was change in the rate of oxygen consumption. In general, there was increase in the rate of oxygen consumption due to the effect of both the pyrethroids.