Distribution of the Enzyme Activity in the Intestine
of Beluga Huso huso and Russian Sturgeon
Acipenser gueldenstaedtii (Acipenseridae)
A. N. Nevalenny* and D. A. Bednyakov
Translated by N. Ruban
Astrakhan State Technical University (ASTU), Astrakhan, 414040 Russia
Correspondence to: *e-mail: nevalennyy@rambler.ru
Received 8 July, 2015
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.
Keywords: beluga Huso huso, Russian sturgeon Acipenser gueldenstaedtii, proximodistal gradient, intestinal mucosa, α-amylase, maltase, alkaline phosphatase, casein lytic proteinases
DOI: 10.1134/S0032945216050088