... 10% of the rate of CO 2 excretion ( Randall, 1990 ; Randall and Ip, 2006 ). ammonia NH 3 NH 4 + fish neuroepithelial cell chemoreceptors ventilation acclimation acid–base status © 2011. 2011 10 5 2011 * Author for correspondence ( [email protected] ) ...

...Basile Michaelidis; Artemis Pallidou; Paraskevi Vakouftsi ABSTRACT The aims of the present study were to describe a possible correlation between the regulation of the key glycolytic enzyme pyruvate kinase and the acid–base status in the haemolymph and in several other tissues of land snails during...

...R. A. Rose; J. L. Wilkens; R. L. Walker ABSTRACT American lobsters Homarus americanus were exercised on an underwater treadmill at speeds from 1.7 to 8 m min −1 to determine the effects of exercise on heart rate, ventilation rate and acid–base status. Heart and ventilation rates showed almost...

...Priscila L. Rocha; Luiz G. S. Branco ABSTRACT We assessed seasonal variations in the effects of temperature on hypoxia-induced alterations in the bullfrog Rana catesbeiana by measuring the heart rate, arterial blood pressure, breathing frequency, metabolic rate, blood gas levels, acid–base status...

... are discussed with reference to the role of circulating catecholamines in rapidly modifying blood O 2 and CO 2 transport in rainbow trout. 4 3 1993 © 1993 by Company of Biologists 1993 catecholamines blood gases acid–base status Na + /H + exchange hypercapnia trout Oncorhynchus...

... exhaustive exercise. Extracellular acid-base status, red blood cell intracellular pH (pHi), and plasma.metabolite and catecholamine levels were recorded simultaneously. Despite a post-exercise rise in plasma glucose level, glucose oxidation was depressed, at least partly because of a rise in plasma lactate...

... or the resultant acidosis may contribute to metabolic suppression during estivation by land snails. 12 04 1990 © 1990 by Company of Biologists 1990 estivation dormancy land snail calorimetry oxygen consumption carbon dioxide retention acid-base status Many terrestrial pulmonate...

... by Company of Biologists 1988 reptiles temperature respiratory exchange ratio carbon dioxide stores acid–base status blood gases lactate Beginning largely with the work by Robin (1962) on the turtle Pseudemys scripta (now Chrysemys scripta ), investigators have found that in vivo...

...Leona Mattsoff; Mikko Nikinmaa ABSTRACT We studied the effects of acute external acidification on the acid-base status and plasma and red cell ion concentrations of lampreys. Mortality was observed within 24 h at pH5 and especially at pH4. The main reason for the high sensitivity of lampreys...

... the muscles ( McDonald & Wood, 1981 ). Red cell pH in acid-Al tench increases despite the decrease in extracellular pH ( Fig. 4 ). This opposite response in acid-base status of the two blood compartments is the same as that observed in tench exposed to environmental hypoxia hypercapnia (Jensen...

... and for constant dissociation of imidazole. The changes of cerebrospinal fluid pH with temperature, calculated from the mean arterial values, were even smaller [ΔpH/Δt csf = −0·008). It is concluded that the observed temperature dependence of the acid-base status is not in agreement with the alphastat hypothesis...