Abstract
Data on distribution of digestive enzymes along the intestinal tract of mature specimens of the beluga Huso huso and Russian sturgeon Acipenser gueldenstaedtii are presented. The absence of a distinct proximo-distal gradient of the enzyme activity can be explained by short length of the intestine of sturgeons. Considerable differences are found in the distribution pattern of enzymes along the intestinal tract of beluga and Russian sturgeon. The effect of the method of calculation of the enzyme activity on the data on the proximo- distal gradient is considered.
This is a preview of subscription content, log in via an institution to check access.
References
Anson, M., The estimation of pepsin, trypsin, papain, and cathepsin with hemoglobin, J. Gen. Physiol., 1938, vol. 224, pp. 79–83.
Dahlqvist, A., Method for assay of intestinal disaccharidases, Anal. Biochem., 1964, vol. 7, pp. 18–25.
Kushak, R.I., Pishchevaritel’no-transportnaya sistema enterotsitov (Digestive-Transport System of Enterocytes), Riga: Zinatne, 1983.
Kuz’mina, V.V., Distribution of a-amylase activity along intestine in freshwater teleosts, Vopr. Ikhtiol., 1979, vol. 19, no. 4 (117), pp. 698–709.
Kuz’mina, V.V., Distribution of activity of disaccharidases along intestine in freshwater teleosts, Vopr. Ikhtiol., 1984, vol. 24, no. 6, pp. 1014–1019.
Kuz’mina, V.V., Fiziologo-biokhimicheskie osnovy ekzotrofii ryb (Physiological-Biochemical Principles of Fish Exotrophy), Moscow: Nauka, 2005.
Nevalennyi, A.N., Bednyakov, D.A., and Dzerzhinskaya, I.S., Enzimologiya (Enzymology), Astrakhan: Astrakh. Gos. Tekh. Univ., 2005.
Nevalennyi, A.N., Tuktarov, A.V., and Bednyakov, D.A., Funktsional’naya organizatsiya i adaptivnaya regulyatsiya protsessov pishchevareniya u ryb (Functional Organization and Adaptive Regulation of Digestion in Fishes), Astrakhan: Astrakh. Gos. Tekh. Univ., 2003.
Smyth, B.W. and Roe, J.H., Photometric methods for determination of a-amylase, J. Biol. Chem., 1949, vol. 179, p. 53.
Ugolev, A.M. and Kuz’mina, V.V., Pishchevaritel’nye protsessy i adaptatsii u ryb (Digestive Processes and Adaptation in Fishes), St. Petersburg: Gidrometeoizdat, 1993.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.N. Nevalenny, D.A. Bednyakov, 2017, published in Voprosy Ikhtiologii, 2017, Vol. 57, No. 1, pp. 123–128.
Rights and permissions
About this article
Cite this article
Nevalenny, A.N., Bednyakov, D.A. Distribution of the enzyme activity in the intestine of beluga Huso huso and Russian sturgeon Acipenser gueldenstaedtii (Acipenseridae). J. Ichthyol. 57, 164–169 (2017). https://doi.org/10.1134/S0032945216050088
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0032945216050088