Abstract
The presence of amylase and maltase in the stomach, intestine and pyloric caeca of Heterotis niloticus is demonstrated. Amylase activity was highest in the fore-gut, followed by the pyloric caeca, while the lowest activity was in the hind-gut. Optimum pH for intestinal amylase was 8.45. Sucrase, lactase and cellulase were not detected.
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References
Adubifa, E. O., 1976. Studies on the hepatopancreatic amylase activity in the cichlid fish Tilapia nilotica (L). M. Phil. Thesis, University of Ibadan, 190 pp.
Akintunde, E. A., 1983. Digestive enzymes in the gut of Sarotherodon galilaeus (Syn. Tilapia galilaea) (Fam. Cichlidae) of Kainji Lake, Nigeria. Nig. J. Sci. 18: 22–25.
Al-Hussaini, A. H. & A. A. Kholy, 1953. On the functional morphology of the alimentary tract of some omnivorous teleost fish. Proc. Egypt. acad. Sci. 4: 17–39.
Bowen, S. H., 1976. A mechanism for digestion of detrital bacteria by the cichlid fish, Sarotherodon mossambicus (Peters). Nature 260: 137–138.
Clark, J., 1983. A preliminary investigation of the digestive enzymes of the dover sole (Solea solea L.). Heriot-Watt University, Edingburgh, 30 pp.
Clark, J., J. E. McNaughton & J. R. Shark, 1984. Metabolism in Marine Flatfish — I. Carbohydrate digestion in dover sole (Solea solea L.) Comp. Biochem. Physiol. 77B: 821–827.
Fagade, S. O., 1983. The food and feeding habits of the fishes of lower River Benue (Nigeria). Bull de l'I.F.A.N. 45: 316–341.
Fish, G. R., 1960. The comparative activity of some digestive enzymes in the alimentary canal of Tilapia and perch. Hydrobiologia 56: 161–178.
Imevbore, A. M. A. & O. Bakare, 1970. The food and feeding habits of non-cichlid fishes of the River Niger in the Kainji Reservoir area. In: Viser, S. A. (ed.), Kainji Lake Studies I. (Ecology). Published for NISER by the Ibadan University Press: 87–98.
Kawai, S. & S. Ikeda, 1971. Studies on digestive enzymes of fishes. I. Carbohydrases in digestive organs of several fishes. Bull. Jap. Soc. Scient. Fish. 37: 333–337.
Keddis, M. N., 1957. On the intestinal enzymes of Tilapia nilotica. Bull. Proc. Egypt. Acad. Sci. 12: 12–37.
Kenyon, W. A., 1925. Digestive enzymes in poikilothermal vertebrates. An investigation of enzymes in fishes with comparative studies on those of amphibians, reptiles and mammals. U.S. Bur. Fish Bull. 41: 181–200.
Kuzmina, V. V., 1980. Seasonal and age-related changes in α-amylase activity in the bream, Abramis brama. J. Ichthyol. 20: 105–110.
Lauzanne, L., 1976. Regimes alimentaire et relations trophiques des poissons du lac Tchad. Cah. ORSTOM. Ser. Hydrobiol. 10: 267–310.
Lowry, O. H., N. J. Rosebrough, A. L. Farr & R. J. Randall, 1951. Protein measurement with the Folin phenol reagent. J. Biol. Chem. 193: 265–275.
Miller, G. L., 1959. Protein determination for large numbers of samples. Analyt. Chem. 31: 964.
Moriarty, D. J. W., 1973. The physiology of digestion of bluegreen algae in T. nilotica. J. Zool. Lond. 171: 25–39.
Nagase, G., 1964. Contribution and physiology of digestion in T. mossambica. Peters: Digestive enzymes and effect of diets on their activity. Z. vergl. physiol. 49: 270–284.
Nikolsky, G. V., 1963. The Ecology of fishes. Academic Press London and New York, 352 pp.
Olatunde, A. A. & O. A. Ogunbiyi, 1977. Digestive enzymes in the alimentary tracts of three tropical catfish. Hydrobiologia 56: 21–24.
Partidge, M. S., 1948. Filter paper partition chromatography of sugars. I. General description and application to the qualitative analysis of sugars in apple juice, egg and foetal blood of sheep. Biochem. J. 42: 238–250.
Petr, T., 1967. Food preference of the commercial fishes of the Volta Lake. University of Ghana Volta Basin Research Project Technical Report, 10: 1–8.
Philips, A.M., 1969. Nutrition and energy utilization. In: Hoar & Randall (eds), Fish physiology, Vol. 1. & Academic Press, London: 391–432.
Sarbahi, D. S., 1951. Digestive enzymes in goldfish. Biol. Bull. 100: 244–257.
Smith, I., 1958. Chromatographic techniques. William Heineman Medical Books Ltd., London: 57–110.
Somogyi, M., 1952. Notes on sugar determination. J. Biol. Chem. 195: 19–23.
Tobor, J. G., 1972. The food and feeding habits of some Lake Chad commercial fishes. Bull. I.F.A.N. Ser. A, 34: 179–212.
Ufodike, E. B. C. & A. J. Matty, 1983. Effect of dietary dextrin on some aspects of carbohydrate metabolism in fish. I. Rainbow trout. Nig. J. Biotech. 1: 78–102.
Ugwumba, A. A. A., 1990. Food and feeding ecology of Oreochromis niloticus, Sarotherodon melanotheron and Heterotis niloticus (Pisces: Osteichthyes) in Awba Reservoir, Ibadan. Ph.D. Thesis, University of lbadan, 395 pp.
Ushiyama, H., L. Fujimori, T. Shibata & K. Yashimura, 1965. Studies on the carbohydrases in the pyloric caeca of the salmon. Bull. Fac. Fish Hokkaido Univ. 16: 183–188.
Yasunuga, Y., 1972. Studies on the digestive function of enzymes: proteases and amylase of some flatfish species. Bull. Tokai Reg. Fish Res. Lab. 71: 169–175.
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Ugwumba, A.A.A. Carbohydrases in the digestive tract of the African bony-tongue Heterotis niloticus (Pisces: Osteoglossidae). Hydrobiologia 257, 95–100 (1993). https://doi.org/10.1007/BF00005949
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DOI: https://doi.org/10.1007/BF00005949