... exchange in an air-breathing teleost is partially regulated by acid–base status, and respiratory control of pH is more likely with increasing temperature. Gas exchange partitioning Air-breathing fish pH regulation The vast majority of ectothermic vertebrates reduce arterial pH (pHa) as body...

... within the brood chamber suggest maternal provisioning of ions for uptake by the embryos. Our data thus support roles for the nuchal organ in ionoregulation, pH regulation and nitrogenous waste excretion. * Author for correspondence ( odonnell@mcmaster.ca ) Competing interests The authors...

... stress. pH regulation Alkaline tide Alkalosis Metabolism ATPase Acidosis Triakis semifasciata Energy Acid–base regulation is crucial for all organisms because it prevents homeostatic alterations that would negatively affect essential physiological functions including metabolism...

... of locus coeruleus neurons excited or inhibited by CO 2 changes with changes in temperature. Chemosensitivity Brainstem CO 2 inhibition Ventilation Ectothermic vertebrates pH regulation Regulation of intracellular and extracellular pH is a fundamental homeostatic requirement...

... by examining oxygen, water and haemolymph pH regulation in the grasshopper Paracinema tricolor . Using a full-factorial design, grasshoppers were acclimated to hypoxic or hyperoxic (5% O 2 , 40% O 2 ) gas conditions, or dehydrated or hydrated, whereafter their CO 2 release was measured under a range of O 2...

... pH regulation,while detection within the rectum reveals a novel subset of cells in An. gambiae not described to date. Phylogenetic analysis of members of theα-CA family from the Homo sapiens , Drosophila melanogaster , Aedes aegypti and An. gambiae genomes shows a clustering of the novel CA with Homo...

... 4 2004 © The Company of Biologists Limited 2004 2004 mosquito larvae pH regulation pH acclimation life history Aedes aegypti Ochlerotatus taeniorhynchus Maintenance of body fluid ionic composition and pH is of critical importance in homeostasis. Because...

... uptake is via CO 2 diffusion or by mediated transport of bicarbonate, and investigating the relationship between extracellular pH regulation and inorganic carbon uptake. Inorganic carbon (C i ) uptake is problematic in the ocean because, although abundant in sea water, most C i is in the form...

... Street, Charlestown, MA 02129, USA (e-mail: brown@receptor.mgh.harvard.edu ). ©The Company of Biologists Limited 1997 epididymis vas deferens pH regulation immunocytochemistry bafilomycin Many transporting epithelia contain a subpopulation of specialized cells that contain high...

... levels using perfusions of the tracheal system via the metathoracic spiracle. There is a great deal of correlational data suggesting that the ventilatory system may participate in extracellular pH regulation in insects as it does in vertebrates. In grasshoppers, changes in ventilation rate during...

... by osmotic shrinkage, NHE-3 was inhibited. The possible physiological significance of the ATP-dependence and osmotic responsiveness of the antiporter isoforms is discussed. ©The Company of Biologists Limited 1994 antiporter Na + /H + exchange pH regulation volume regulation ATP dependence...

... unaffected by changes in collecting and holding protocols. 16 4 1993 © 1993 by Company of Biologists 1993 crayfish Austropotamobius pallipes pH regulation acid–base balance temperature moult cycle Although no data on seasonal variations in extracellular acid–base balance...

... and an accumulation of acidic groups, supports pH regulation in facultative anaerobes by minimizing the amount of accumulated protons. High levels of phosphagens mean high proton absorption during hydrolysis and an increase in the intracellular buffer value. Decarboxylation reactions in catabolic pathways...

... 1987 by Company of Biologists 1987 anaerobiosis anaerobic metabolism opines octopine strombine succinate propionate acetate protons acid-base pH regulation intracellular pH strong ions Sipunculus nudus The preceding paper ( Pörtner, 1987b ) led to several conclusions...

... ; Boutilier et al . 1979 ). pH regulation epithelial ion transport aldosterone corticosterone catecholamines respiratory acidosis © 1987 by Company of Biologists 1987 05 02 1987 ...