TITLE

Mass-transfer, utilization, and diffusion of oxygen in skeletal muscles of the stenohaline goby Gobius cobitus pallas under conditions of hypoosmotic medium

AUTHOR(S)
Soldatov, A.
PUB. DATE
March 2013
SOURCE
Journal of Evolutionary Biochemistry & Physiology;Mar2013, Vol. 49 Issue 2, p215
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Effect of hypoosmotic conditions of medium on oxygen regime of skeletal muscles of the stenohalin goby Gobius cobitus Pallas was studied under conditions of experiment. The control fish group was maintained at 12-14‰, the experimental one-at 4.8-5.6‰. Duration of the experiment-44-45 days, water temperature-15 ± 1°C, photoperiod-12 day/12 night. It was established that under conditions of external hypoosmia there occurred hydration of the goby skeletal muscles and a decrease of their diffusion capability with respect to oxygen. The latter was accompanied by the tissue {ie215-1} decrease, which is indicated by low values of {ie215-2} in the venous blood outflowing from muscles. For the first 14-16 days of adaptation to the hypoosmotic medium there were restricted processes of mass transfer and oxygen utilization, which was associated with a decrease of the voluminous tissue blood flow and the blood oxygen concentration. These changes occurred on the background of the blood plasma hydration and a decrease of the number of circulated erythrocytes, and then they were completely compensated.
ACCESSION #
88060398

 

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