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Abstract
Eco-physiological study indicates the Clarias batrachus is a eurythermal fish and able to tolerate the wide range of climatic conditions. The quantitative analysis of nutritional components in gonadal region, such as glucose, proteins and fats showed the variations during exposure of fish to hot and cold temperatures. The fresh water catfish exhibits distinct phases of reproduction and also showed the changes in the levels of energy precursors with change in the excretory products, with respect to adaptability towards different environmental temperature conditions. Gradual increase of glucose, proteins, and cholesterol is observed in the male gonadal tissues. Rectal gland and clasper tissues showed, decreased of urea levels during the exposure of fish to the higher tolerable temperature. However, in female fish, the levels of proteins are significantly enhanced during the high temperature exposure. The levels of urea significantly decreased in the tissues of uterus and brain during the study period, while the lowering of glucose levels in brain indicates the extent of rate of physiological activity of the brain.
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References
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- Lal Bechan, R. Mohan and T.P. Singh, 1987. Variation in different lipids and their relations to reproduction in the male cat fist Clarias batrachus”. Indian J. Fish Endocrinology, cent. Advance stuey, Zool. Banarus Hindu University, Varanasi., 25 (9) : 639 – 640.
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- Olivereau M., 1967. A observation s sur L’ hypophyse de L’ angullae femmelle, enparticular Lors de La maturation sexuelle. Z. Zellforsch, 80 : 264 – 285. DOI: https://doi.org/10.1007/BF00337462
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- Vivian J.H. 1939. Role de I’ hypophyse dans Le determinise du cycle Genital femelle du’n teleosteen, Gobius paganellus. L. C. R. Acad. Sci., Paris. 208 : 948 – 949.
- Wybenga Donald R., 1971. Protocol for glucose estimation. Clin. Chem. Acta., 17, 891. DOI: https://doi.org/10.1093/clinchem/17.9.891
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References
Anantha Krishnan K.R. and Kutty M.N., 1979. Mortality and breathing rate at high ambient temperature in the cichlid fish Tilapia mossambica. Peters – Indian, J. Ex. Biol. 12, 55 – 59.
APHA. AWWA AND WPCF, 1975. Methods of examination of water and waste water. 14th , AM publ. HITH. ASSD., Washington.
Crocker C.L., 1967. Diacetylmonoxime method for urea estimation., AM. J. Med. Tech., 33, 361.
Dadzie S., 1969. Spermatogenesis and the stages of maturation in the male cichlid fish Tilapia mossambica”. J. Zool., 159 : 399 – 403. DOI: https://doi.org/10.1111/j.1469-7998.1969.tb08454.x
Dumas B.T., 1978. Biuret Method of protein estimation. Clin. Chem. Acta., 23, 663.
Fry F.E.J., 1970. Effect of environmental factors on the physiology of fish. In fish Physiology, Vol. 1, London, Academic press. DOI: https://doi.org/10.1016/S1546-5098(08)60146-6
Fry F.E.J., Brett I.R. and Clawson G.H., 1942. Lethal limits of temperature for young gold fish. Rev. Can Biological, (1) : 50 – 56.
Kulkarni, 1987. Effect of temperature acclimation on ionic changes in the snail Bellamya benghalensis. Environment and Ecology, Vol., 5. No. 3 : 35 – 37.
Lal Bechan, R. Mohan and T.P. Singh, 1987. Variation in different lipids and their relations to reproduction in the male cat fist Clarias batrachus”. Indian J. Fish Endocrinology, cent. Advance stuey, Zool. Banarus Hindu University, Varanasi., 25 (9) : 639 – 640.
Nagbhushnam R. and Sarojine R., 1969. Effect of temperature and salinity on heat tolerance in the hermitcrabs Dignosis bicirstimanus. Hydrobiologia, 34 : 22 – 29. DOI: https://doi.org/10.1007/BF00040328
Olivereau M., 1967. A observation s sur L’ hypophyse de L’ angullae femmelle, enparticular Lors de La maturation sexuelle. Z. Zellforsch, 80 : 264 – 285. DOI: https://doi.org/10.1007/BF00337462
Precht, 1973. Concepts of the temp. adaptation of an changing reaction system of cold blood animal. In C. L. Proser (ed) physiological adaptation : Anor physiol. Society, Washington D.C., 50 -77.
Shrivastav S.J. and S.K. Shrivastav, 1994. Seasonal changes in liver and serum proteins etc, in relation to vitellogenesis in a fresh water cat fish Heteropneustes fossilis. Annales of Endocrinologie , Dept. Of zoology, SMM town Post. Grad. Coll Ballia 277001, India, 55 (5), 197 – 202.
Vivian J.H. 1939. Role de I’ hypophyse dans Le determinise du cycle Genital femelle du’n teleosteen, Gobius paganellus. L. C. R. Acad. Sci., Paris. 208 : 948 – 949.
Wybenga Donald R., 1971. Protocol for glucose estimation. Clin. Chem. Acta., 17, 891. DOI: https://doi.org/10.1093/clinchem/17.9.891
Wybenga D.R. and Pilleggi V.J., 1979. Biochemical estimations of glucose and lipids., Clin. Chem. Acta., 16, 980.