Synopsis
An experiment to identify the point of no return of fish alevins and larvae has been made using the proteolytic activity as an index. Larvae of Coregonus pollan and Salmo gairdneri were starved or fed with zooplankton as a control and proteolytic enzymes measured. The lowest value of the total proteolytic activity coincides with the point of no return expressed in degree-days based on survival trials.
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References cited
Balon, E. K. 1975. Terminology of intervals in fish development. J. Fish. Res. Board Can. 32: 1663–1670.
Bilton, H. T. & G. L. Robins. 1973. The effects of starvation and subsequent feeding on survival and growth of Fulton Channel sockeye salmon fry (Oncorhynchus nerca). J. Fish. Res. Board Can. 30: 1–5.
Blaxter, J. H. S. 1969. Development: eggs and larvae. pp. 177–252. In: W. S. Hoar & D. J. Randall (ed.) Fish Physiology, vol. 3, Academic Press, New York.
Blaxter, J. H. S. & K. F. Ehrilich. 1974. Changes in behaviour during starvation of herring and plaice larvae. pp. 575–588. In: J. H. S. Blaxter(ed.) The Early Life History of Fish, Springer-Verlag, Berlin.
Dbrowski, K. 1975. Point of no return in the early life of fishes. An energetical attempt to define the food minimum. Wiad. Ekol. 21: 277–293.
Dbrowski, K. 1976. An attempt to determine the survival time for starving fish larvae. Aquaculture 8: 189–193.
Dbrowski, K. 1978. Problems in the determination of nitrogen compounds when applied to fish feeding experiments. pp. 519–525 In: K. Tiews & J. E. Halver (ed.) Finfish Nutrition and Fishfeed Technology, vol. 2, Berlin.
Dbrowski, K. 1979. The role of proteolytic enzymes in fish digestion. pp. 107–126. In: E. Styczynska-Jurewicz, T. Backiel, E. Jaspers & G. Persoone(ed.) Cultivation of Fish Fry and Its Live Food, European Mariculture Society 4, Bredene.
Dbrowski, K. in press. The spawning and early life history of the pollan (Coregonus pollan Thompson) in Lough Neagh, Northern Ireland. Int. Revue ges. Hydrobiol.
Dbrowski, K. & J. Glogowski. 1977. Studies on the role of exogenous proteolytic enzymes in digestion processes in fish. Hydrobiologia 54: 129–134.
Ehrlich, K. F. 1974. Chemical changes during growht and starvation of larval Pleuronectes platessa. Mar. Biol. 24: 39–48.
Jančařik, A. 1964. Die Verdauung der Hauptnährstoffe beim Karpfen. Zeit.f. Fisherei Hilfswiss. 12: 601–684.
Kawai, S. & S. Ikeda. 1973. Studies on digestive enzymes of fishes- III. Development of the digestive enzymes of rainbow trout after hatching and the effect of dietary change on the activities of digestive enzymes in the juvenile stage. Bull. Japan. Soc. Sci. Fish. 39: 819–823.
Korzuev, P. A. & L. B. Sharkova. 1967. Peculiarity of Caspian sturgeon digestion. pp. 205–208. In: Metabolism and Biochemistry in Fish, Nauka, Moscow.
Matskasi, I. 1978. The effect of Bothriocephalus acheilognathi Yamaguti, 1934 infection on the protease activity in the gut of carp fry. Parasit. Hungariae 11: 51–56.
O'Connell, C. P. 1976. Histological criteria for diagnosing the starving condition in early post yolk sac larvae of the northern anchovy, Engraulis mordax Girard. J. Exp. Mar. Biol. Ecol. 25: 285–312.
Rice, S. D. & R. M. Stokes. 1974. Metabolism of nitrogenous wastes in the eggs and alevins of rainbow trout, Salmo gairdneri Richardson. pp. 325–338. In: J. H. S. Blaxter(ed.) The Early Life History of Fish, Springer-Verlag, Berlin.
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Dbrowski, K. Proteolytic enzyme activity decline in starving fish alevins and larvae. Environ Biol Fish 7, 73–76 (1982). https://doi.org/10.1007/BF00011827
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DOI: https://doi.org/10.1007/BF00011827