Impact of changing ecophysiological conditions in blood urea levels of freshwater fish Wallago attu
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Abstract
Definite cyclic variations were observed in blood urea levels of freshwater catfish Wallago attu. The maximal mean blood urea level (8.44±1.96 mg/100 ml) was noted in the month of June while minimal level in December, revealing a difference of 65.87% between the two levels. Seasonal alterations observed here in W. altu were correlated with ecophysiological factors like temperature, food availability, body metabolism, breeding cycle and hormonal changes which have been essentially found to be involved in fish life.
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Keywords
Wallago attu, Blood urea, Spawning, Seasonal, Temperature
References
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Natelson, S. (1957). Microtechniques of clinical chemistry for the routine laboratory. C.G. Thomas, Spring.
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Sathyenesan, A. G. (1969). Correlative cycling changes in the pituitary and gonad of Mystus seenghaea and Barbus stigma. J. Zool. Soc. India, 12: 175-190.
Saxena, A. (2000). Biochemical changes in liver and muscle of Channa gachua during reproductive cycle. Aquacult, 1: 51-56.
Shafi, S.M. (2000). Modern Ichthyology, Inter India Pub., New Delhi.
Singh, L.L. and Singh, T.P. (1983). Annual changes in the total gonadotrophic potency in relation to gonadial activity in freshwater catfish Clarias batrachus. J. Interdiscipl. Cycle Res. 14: 227-239.
Tandon, R.S. and Chandra, S. (1977). Cyclic changes in blood urea levels of freshwater catfish Clarias batrachus. Z. Tierphysiol. Tierernah. u. Futtermittelkde. 38: 211-214.
Tandon, R.S. and Chandra. S. (1980). Ecophysiology of Fishes: Changes in serum glutamic oxalacetic transaminase levels of freshwater fish Wallago attu, during varied conditions of life. J. Adv. Zool., l: 28-32.
Bonga, S.E.W. (1997). The stress response in fish. Physiol. Rev. 77 : 3.
Chandra, S. (1985). Sex related variations in serum cholesterol levels of some freshwater fishes (Cypriniformes). J.Curr. Biosci.,2: 51-54.
Chandra, S. (1986). Cyclic changes in blood urea levels of freshwater catfish Rita rita. Proc. Nat. Symp. Fish & Environ. 107-109.
Chandra, S. (1995). Cyclic changes in total serum protein levels of freshwater catfish Rita rita. Biol. Memoirs, 21: 73-75.
Dhanze, J.R., Sharma,I. and Dhanze, R. (2001). Seasonal variations in the histology of pituitary gland of Tor putitora in relation to its breeding behaviour. Aquacult., 2: 45-53.
Dunlop, J.C., Loros, J.J. and Decoursey, P.J. (2004). Chronobiology - biological time keeping. Sinaur Associates Inc. Pub. Sunderland, Massachusetts, U.S.A.
Eckert, R. and Randall, D. (1987). Animal Physiology- Mechanism and Adaptations. 2nd ed. CBS Pub.&Distri., Delhi
Gordon, M.S. (1972). Animal physiology, The Mc Millan Co., New York.
Hutton, K.E. (1968). Characteristics of the blood of adult pink salmon at three stages of maturity. Fish. Bull.66: 195-202.
Idler, D.R. and Tsuyuki, H. (1958). Biochemical studies on physical measurement, plasma cholesterol and electrolyte levels. Can. J. Biochem. Physiol., 36: 783-791.
Kinne, E.D. (1995). The effect of pollution on reproduction in fishes, Rev. Fish. Biol. Fish., 5: 52-96.
Lehri, G.K. (1968). Cyclical changes in the ovary of the catfish Clarias batrachus. Acta. Anat. 69: 105-124.
Natelson, S. (1957). Microtechniques of clinical chemistry for the routine laboratory. C.G. Thomas, Spring.
Robertson, O.H., Krupp, M.A., Favour, C.B., Hane, S. and Thomas, S.F. (1961).Physiological changes occurring in the blood of the pacific salmon Onchorhynchus tschwytscha, accompanying sexual maturation and spawning. Endocrinol. 68: 733-746.
Sathyenesan, A. G. (1969). Correlative cycling changes in the pituitary and gonad of Mystus seenghaea and Barbus stigma. J. Zool. Soc. India, 12: 175-190.
Saxena, A. (2000). Biochemical changes in liver and muscle of Channa gachua during reproductive cycle. Aquacult, 1: 51-56.
Shafi, S.M. (2000). Modern Ichthyology, Inter India Pub., New Delhi.
Singh, L.L. and Singh, T.P. (1983). Annual changes in the total gonadotrophic potency in relation to gonadial activity in freshwater catfish Clarias batrachus. J. Interdiscipl. Cycle Res. 14: 227-239.
Tandon, R.S. and Chandra, S. (1977). Cyclic changes in blood urea levels of freshwater catfish Clarias batrachus. Z. Tierphysiol. Tierernah. u. Futtermittelkde. 38: 211-214.
Tandon, R.S. and Chandra. S. (1980). Ecophysiology of Fishes: Changes in serum glutamic oxalacetic transaminase levels of freshwater fish Wallago attu, during varied conditions of life. J. Adv. Zool., l: 28-32.
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How to Cite
Impact of changing ecophysiological conditions in blood urea levels of freshwater fish Wallago attu. (2009). Journal of Applied and Natural Science, 1(1), 47-49. https://doi.org/10.31018/jans.v1i1.33
