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Effect of phenol on oxygen stress in muscle tissue of the siberian roach rutilus rutilus lacustris


Effect of phenol on oxygen stress in muscle tissue of the siberian roach rutilus rutilus lacustris



Voprosy Ichtiologii 19(3): 564-566



ISSN/ISBN: 0042-8752

A study was made of free O2 tension in the tissues of free-swimming R. r. lacustris weighing 100-200 g. The roaches were kept in a thermostatically controlled aquarium at 11-12.degree. C. A miniature O2 gauge was implanted in the dorsal muscles of the roach. PO2 measurement was accomplished amperometrically with the aid of a polarograph. Phenol intoxication induced changes in PO2 in the specimens' muscles which may be divided into 3 periods. Following the introduction of phenol into the water [10-15 min], PO2 in the muscles diminished. There was no correlation between extent of PO2 reduction and phenol concentration. The 2nd period was characterized by a sustained increase in PO2, which lasted in inverse proportion to the phenol concentration. In the 3rd period PO2 decreased and remained at this level throughout the remainder of the roach's exposure to the toxin. Fluctuations in PO2 observed in the experiment may have been induced by the change in amount of O2 delivered by the blood or by the change in the cells' O2 consumption level.

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Accession: 005260767

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