Caractérisation de quelques activités enzymatiques digestives chez Mugil capito en relation avec la taille |
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Authors: | Joël Trellu Jocelyne Albertini-Berhaut Hubert J. Ceccaldi |
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Affiliation: | 1. Ecole Pratique des Hautes Etudes, Laboratoire de Biochimie et Ecologie des Invertébrés marins, Station Marine d''Endoume, 13007 Marseille, France;2. Station Marine d''Endoume et Centre d''Océanographie, 13007 Marseille, France |
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Abstract: | The activities of esterase 2C, esterase 14C, L-leucine aminopeptidase, α-glucosidase, alkaline and acid phosphatases of the stomach, the caeca and the gut of Mugil capito were examined by polyacrylamide gradient gel electrophoresis. Fishes of three sizes were compared: the smallest only showed esterase 2C and phosphatases activities. Zymograms for each size and each organ were examined and the molecular weights of the isozymes evaluated with an accuracy of 10,000 daltons. It was found that (a) the existence of some isozymes is dependent to the size and the organ; (b) some enzymes are found only in some parts of the digestive tract; (c) for any given organ, enzymatic activity differs from one isozyme to another; and (d) the digestive enzymatic activities differ for each organ considered and in different ways dependent on the size of the fish. |
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Keywords: | Mugilidae teleosts digestive tract zymograms growth |
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