Abstract

Energy content interms of calories/ gram dry weight in the fillet as well as in the food as the dietary ratio of some economically important fishes from different habitat (Marine and freshwater) were determined by two methods; The Organic Carbon and The Karzinkin Tarkovaskaya. The energy value of the nutrients in the fillet/food was determined by these two methods which were highly significant (p<0.001) and in order [Rastrillegar kanagurta (988.50/8251.66 and 12088.28/8694.46 Joules gm-1); Lethrinus lentjan (7274.80/ 5544.50 and 9237.30/ 5978.26 Joules gm-1); Aphareus rutilans (6891.56/ 4813.56 and 9092 58/ 5136.78 Joules gm-1) and Chanos chanos (6681.50/ 5120.56 and 8841.48/ 5520.54 Joules gm-1)] in Marine water fishes. As compare to other environment of freshwater, the order was as such, Clarius gariepinus (7888.61/6613.83 and 8779.25/7290.40 Joules gm-1) Oreochromis niloticus (6103.00/4778.69 and 6896.20/5584.16 Joules gm-1); Cyprinus carpio (5639.38/4276.49 and 6370.41/4942.18 Joules gm-1) and Gara tibanica (4353. 22/3300.45 and 3882.73/2680.53 Joules gm-1) respectively. The moisture content and the ratio of energetic values of fillet/food were also determined and tabulated. Consistency of the results obtained indicate the reliability of the method used and to explain the validity of conversion factor from weight to energy which will be useful for general estimation of energy contents and energy flow in aquatic ecosystem.

Keywords:

Bioenergetics, fillet/food calorie ratio, marine and freshwater fishes,

References

1. Adron, J.W., A. Blair, C.B. Cowey and A.M. Shanks, 1976. Effect of dietary energy level and dietary source on growth, feed conversion and body copmosition of turbot (Scophthalmus maximus L.). Aquaculture, 7: 125-132.
   CrossRef    
2. Al-Akel, A.S. and M.J.K. Shamsi, 1995. Estimation of fillet/food calorie ratio as an index of energy assimilation in some of the marinewater fishes from Saudi Arabia. Arab Gulf J. Sci. Res., 13(2): 379-388.
   
3. Bowen, S.H., E.V. Lutz and M. Ahlgren, 1995. Dietary Protein and energy as determinants of food quality: Trophic strategies compared. Ecology, 76: 899-907.
   CrossRef    
4. Brett, J.R., J.E. Shelbourn and C.T. Shoop, 1969. Growth rate and body composition of fingerling sockeye salmon, Onchorhynchus nerka, in relation to temperature and ration size. J. Fish. Res. Board Can., 26: 2363-2394.
   CrossRef    
5. Brey, T., H. Rumohr and S. Ankar, 1988. Energy content of macro benthic invertebrates: General conversion factors from weight to energy. J. Exp. Mar. Biol. Ecol., 17: 271-278.
   CrossRef    
6. Driver, E.A., 1981. Calorific values of pond invertebrates eaten by ducks. Freshwater Biol., 11: 579-581.
   CrossRef    
7. Elliot, J.M., 1976A. Energy losses in the waste products of brown trout (Salmo trutta L.). J. Anim. Ecol., 45: 561-580.
   CrossRef    
8. Elliot, J.M., 1976B. The energetics of feeding, metabolism and growth of brown trout (Salmo trutta L.) in relation to body weight, water temperature and ration size. J. Anim. Ecol., 45: 923-948.
   CrossRef    
9. Foltz, J.W. and C.R. Norden, 1977. Seasonal changes in food consumption and energy content of smelt (Osmerus mordax) in Lake Michigan. T. Am. Fish. Soc., 106(3): 203-234.
   CrossRef    
10. Griffith, D., 1977. Calorific variation in crustacea and other animals. J. Anim. Ecol., 46: 593-605.
    CrossRef    
11. Hughes, R.N., 1969. Appraisal of the iodate-sulphuric acid wetoxidation procedure for the estimation of caloric content of marine sediments. J. Fish. Res. Board Can., 26: 1759-1764.
    CrossRef    
12. Jafri, A.K. and M.J.K. Shamsi, 1983. Fillet/food calorie ratio as an index of energy assimilation in some teleostean fish. Curr. Sci. India, 59(9): 431-432.
    
13. Jana, B.B. and G.P. Pal, 1980. Calorific value as functions of main body constituents in some freshwater teleosts. Indian J. Fish., 27: 269-272.
    
14. Jarre, A., 1990. Estimating the food consumption of fishes: One step in linking a species with its ecosystem. Naga, ICLARM Quart., 13(2): 3-4.
    
15. Karzinkin, G.S. and I. Tarkovaskaya, 1964. Determination of Caloric Value of Small Samples. In: Pavloyskii, E.N., (Ed.), Techniques for the Investigation of Fish Physiology. Israel Program for Scientific Translations, Oldbourne Press, London, pp: 122-124.
    
16. Marais, J.F.K. and G.W.M. Kissil, 1979. The influence of energy level on the feed intake, growth, food conversion and body composition of Sparus aurata. Aquaculture, 17: 203-219.
    CrossRef    
17. Mills, E.L. and J.L. Forney, 1901. Energetics, food consumption and growth of young yellow perch in Oneida Lake, New York. T. Am. Fish. Soc., 110: 479-488.
    CrossRef    
18. Niimi, A.J. and J.L. Beamish, 1974. Bioenergetics and growth of largemouth bass (Micropterus salmoides) in relation to body weight and temperature. Can. J. Zoolog., 52: 447-456.
    CrossRef    PMid:4832961    
19. Norrbin, F. and U. Bamstedt, 1984. Energy contents in benthic and planktonic invertebrates of Kosterfjorden, Sweden. A comparison of energetic strategies in marine organisms groups. Ophelia, 23: 47-64.
    CrossRef    
20. Odum, E.P., 1971. Fundamentals of Ecology. 3rd Edn., W. B. Saunders Co., Philadelphia and Pinnsylavania.
    
21. Page, J.W. and J.W. Andrews, 1973. Interactions of dietary levels of protein and energy on channel catfish (Ictalurus punctatus). J. Nutr., 103: 1339-1349.
    CrossRef    PMid:4725721    
22. Pandian, T.J. and R. Raghuraman, 1972. Effect of feeding rate on conversion efficiency and chemical composition of the fish Tilapia mossambica. Mar. Biol., 12: 129-136.
    CrossRef    
23. Papoutsoglou, S.E. and E.G. Papaparaskeva-Papoutsoglou, 1978. Comparative studies on body composition of rainbow trout (Salmo gairdneri R.) in relation to type of diet and growth rate. Aquaculture, 13: 235-243.
    CrossRef    
24. Pauly, D., 1986. A simple method for estimating the food consumption of fish population from growth data and food conversion experiments. Fish. Bull., 84(4): 827-840.
    
25. Qasim, S.Z. and P.G. Jacob, 1972. The estimation of organic carbon in the stomach contents of some marine fishes. Indian J. Fish., 19: 29-34.
    
26. Qasim, S.Z., S. Vijayaragha Van and D.C.V. Easterson, 1975. Caloric values of the ingested food of some fish and prawns. Indian J. Fish., 20(2): 318-325.
    
27. Sainsbury, K., 1986. Estimation of food consumption from field observations of fish feeding cycles. J. Fish Biol., 29: 26-36.
    CrossRef    
28. Salmon, D.J. and A.E. Bradfield, 1972. The energetics of feeding metabolism and growth of perch (Perca flavescens L.). J. Anim. Ecol., 4J: 699-718.
    CrossRef    
29. Vijayraghavan, S., M.V.M. Wafar, P.G. Jacob, T. Balasubrama Nian, M.D. Rajopal and L. Krishnakumari, 1975. Caloric values of estuarine and marine organisms from Goa. Mahasager, 8(1-2): 9-14.
    

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