Preferential Intracellular pH Regulation is a Common Trait Amongst Fishes Exposed to High Environmental CO2

April 16, 2020 | Biology

This week, Lab.Equipment has curated a new Bio article published from Journal of Experimental Biology:

R. B. Shartau, D. W. Baker, T. S. Harter, D. L. Aboagye, P. J. Allen, A. L. Val, D. A. Crossley, Z. F. Kohl, M. S. Hedrick, C. Damsgaard, and C. J. Brauner

Acute (<96 h) exposure to elevated environmental CO2 (hypercarbia) induces a pH disturbance in fishes that is often compensated by concurrent recovery of intracellular and extracellular pH (pHi and pHe, respectively; coupled pH regulation). However, coupled pH regulation may be limited at CO2 partial pressure (PCO2) tensions far below levels that some fishes naturally encounter. Previously, four hypercarbia-tolerant fishes had been shown to completely and rapidly regulate heart, brain, liver and white muscle pHi during acute exposure to >4 kPa PCO2 (preferential pHi regulation) before pHe compensation was observed. Here, we test the hypothesis that preferential pHi reg... View the whole article at the Journal of Experimental Biology (JEB) Blog.

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