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Abstract
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Article Information:
Enzymes in Selected Tissues of Catfish Hybrid Exposed to Aqueous Extracts from Lepidagathis alopecuroides Leaves
U.U . Gabriel, F.G. Obomanu and O.D. Oveh
Corresponding Author: Davies Onome
Submitted: 2009 July, 07
Accepted: 2009 July, 17
Published: |
Abstract:
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Hybrid catfish, Heterobranchus longifilus ♂ x Clarias gariepinus ♀ (mean total length, 29.96±2.23
cm, SD; mean weight, 207.83±12.63g SD) were exposed individually in quadruplicate to 40 L of sublethal
aqueous extracts of Lepidagathis alopecuroides (0.25, 0.50, 0.75, 1.00, 1.25 and a control, 0.0 mg L-1) for 21
days in a daily static renewal bioassay. The liver, kidney, gill and muscle tissues were then assayed for enzymes
activities. The activities of AST and ALT in the liver were most inhibited at 0.75 mg L-1, AST activity was
inhibited in all the exposure concentrations below the control value, (p<0.05). Generally ALT activity was
inhibited. The activities of AST and ALT in the kidney were generally retarded below control values. Activities
of AST and ALT declined in gill tissues below the control values. ALP activity was generally enhanced in the
liver, kidney and gill of exposed fish. The activities of AST and ALP in the muscle were mostly enhanced at
1.25 mg L-1, but ALP was inhibition at 0.50 and 0.75 mg L-1. Although the bio-indicator enzymes could be
used for monitoring the toxic effects of the plant in the fish species this will depend on the exposure levels and
organs of choice.
Key words: Catfish hybrid, Lepidagathis alopecuroides, aspartate transaminase, alanine transaminase, alkaline phosphatase, ,
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Abstract
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Cite this Reference:
U.U . Gabriel, F.G. Obomanu and O.D. Oveh, . Enzymes in Selected Tissues of Catfish Hybrid Exposed to Aqueous Extracts from Lepidagathis alopecuroides Leaves. International Journal of Animal and Veterinary Advances, (2): Page No: 39-43.
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ISSN (Online): 2041-2908
ISSN (Print): 2041-2894 |
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