Effects of strenuous activity on intracellular and extracellular acid-base status and H super(+) exchange with the environment in the inactive, benthic starry flounder Platichthys stellatus

Exhaustive activity in starry flounder (Platichthys stellatus ) resulted in an acidosis in the whole-body extracellular fluid (ECF) and intracellular fluid (ICF) compartments. In the ECF, the acidosis consisted of a short-lived respiratory component (increase in CO sub(2) tension (Pco sub(2))) follo...

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Bibliographic Details
Published in:Physiological zoology 1987-01, Vol.60 (1), p.37-53
Main Authors: Milligan, CL, Wood, C M
Format: Article
Language:English
Subjects:
Marine
Platichthys stellatus
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Summary:Exhaustive activity in starry flounder (Platichthys stellatus ) resulted in an acidosis in the whole-body extracellular fluid (ECF) and intracellular fluid (ICF) compartments. In the ECF, the acidosis consisted of a short-lived respiratory component (increase in CO sub(2) tension (Pco sub(2))) followed by a longer-lived metabolic component (decrease in (HCO sub(3)u-)). The acid-base disturbance was corrected by 8-12 h. There was little lactate accumulation in the blood, with levels rarely greater than 1-2 mmol/liter, and at all times the blood metabolic acid load ( Delta H super(+) m) was in excess of the blood lactate load ( Delta La super(-)). Blood (glucose) increased by 50%. Whole-body extracellular fluid volume (ECFV) fell by 17% owing to a shift into the intercellular fluid volume (ICFV), causing a general hemoconcentration.
ISSN:0031-935X