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Osidasic profiles in the digestive tract of some omnivorous and herbivorous continental fishes of French Guiana

Published online by Cambridge University Press:  15 January 1988

René Lésel ,
Ricardo Rojas-Beltran ,
Jean-Marie Blanc ,
Michèle Rouel  and
Michèle Lésel
René Lésel
Affiliation:
INRA, Station d'Hydrobiologie, Laboratoire des Microorganismes BP 3, Saint-Pée-sur-Nivelle, 64310 Ascain, France
Ricardo Rojas-Beltran
Affiliation:
INRA, Institut de Limnologie, 75, avenue de Corzent, BP 11, 74203 Thonon-les-Bains cedex, France
Jean-Marie Blanc
Affiliation:
INRA, Station d'Hydrobiologie, Laboratoire de Nutrition des Poissons, BP 3, Saint-Pée-sur-Nivelle, 64310 Ascain, France
Michèle Rouel
Affiliation:
INRA, Station d'Hydrobiologie, Laboratoire des Microorganismes BP 3, Saint-Pée-sur-Nivelle, 64310 Ascain, France
Michèle Lésel
Affiliation:
INRA, Station d'Hydrobiologie, Laboratoire des Microorganismes BP 3, Saint-Pée-sur-Nivelle, 64310 Ascain, France
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Abstract

A study of the osidasic profile in the digestive tract of some herbivorous fish species living in tropical freshwaters of French Guiana has been undertaken. Osidase APY-ZYM plates allowing the study of the last stages of the polyosides lysis were used. The results show that Arius parkeri and Arius couma have low scores but without any staring enzymatic particularities; Myleus ternetzi gives similar results. Compared with the species. Leporinus granti and Hoplosternum thoracatum have more diversified and increasing scores; Hypostomus watwata exhibits a number of striking top performancesand general superiority over other species. These preliminary results are discussed according to the possible fish aptitude to digest complex glucids of the diet.

Keywords

Osidaseherbivorous fishesfreshwaterFrench GuianaOsidasepoissons herbivoreseau douceGuyane Française
Type
Research Article
Information
Aquatic Living Resources , Volume 1 , Issue 1 , January 1988 , pp. 53 - 57
Copyright
© IFREMER-Gauthier-Villars, 1988

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