[Blood acid-base changes produced by variations of water oxygenation in the crab Carcinus maenas (author's transl)].
10 Blood acid-base changes were studied at 17 degrees C in immersed crabs (Carcinus maenas) exposed to hypoxic and hyperoxic conditions, by measuring the pH and the CO2 partial pressure, PbCO2, and by calculating the bicarbonate concentration. 20 Hyperoxia first induces a marked respiratory acidosis with a rise of PbCO2. This acidosis is compensated thereafter by a non-ventilatory increase of the blood buffer base concentration. These results are discussed in relation to the general problems concerning the control of the blood acid-base balance in aquatic animals.
D000136:Acid-Base Equilibrium / Q000187:drug effects*; D000818:Animals; D001639:Bicarbonates / Q000097:blood; D001769:Blood; D003386:Brachyura / Q000502:physiology*; D002245:Carbon Dioxide / Q000097:blood*; D006863:Hydrogen-Ion Concentration; D000860:Hypoxia / Q000097:blood; D008297:Male; D010100:Oxygen / Q000032:analysis / Q000494:pharmacology*; D012119:Respiration; D012623:Seawater / Q000032:analysis
D001639:Bicarbonates; D002245:Carbon Dioxide; D010100:Oxygen
Changements de létat acide-base du sang en fonction de l'oxygénation de l'eau chez le crabe, Carcinus maenas L.