Electrophoretic variation of phosphoglucomutase, glucose-6-phosphate, hexose-6-phosphate and tetrazolium oxidase enzymes in some fishes from Khor Al-Zubair, Iraq and Kuwait

Al-Hassan L.A.J., Mahdi A.A., Ibrahim L.I.

Published date: April 1986
Volume: 10
Number: 2
Pagination: 177-185
Publisher: Société Française d'Ichtyologie
doi: https://doi.org/10.26028/cybium/1986-102-007
Abstract

Tissue extract of skeletal muscle and liver were electrophoretically examined for phosphoglucomutase (PGM; EC. 2.7.5.1), glucose-6-phosphate dehydrogenase (G6PD), hexose-6-phosphate dehydrogenase (H6PD) and tetrazolium oxidase (TO) activity in thirty-two species of teleostean fishes. One phosphoglucomutase, glucose-6-phosphate dehydrogenase, hexose-6-phosphate dehydrogenase and tetrazolium oxidase were found in all the teleost groups studied. In the fishes studied, tetrazolium oxidase appeared to be controlled by two codominant alleles, except in Therapon puta in which this enzyme appeared to be controlled by three alleles. TO, G6PD, and H6PD can be considered as good taxonomic criteria to differentiate Johnius aneus from the remaining fish species. On the other hand, PGM can me considered as a good taxonomic criterion to differentiate Lutjanus fulviflamma.

Keywords: Chemotaxonomy - Electrophoresis - Enzyme acyivity - ISW Kuwait - Teleostean
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