... with changes in seawater pH. Summary: Na + /H + exchangers contribute differentially to sodium and pH regulation in the midgut fluids of the sea urchin larva. Acid–base regulation Alkaline midgut Ion-selective microelectrodes NHE Ocean acidification Sodium/hydrogen exchanger...

..., has an established role in potassium and acid–base regulation in mammals and is well known for its role in gastric acidification. However, the role of HKA in extra-gastric organs such as the gill and kidney is less clear, especially in fishes. In the present study in Nile tilapia, Oreochromis...

... regulation among fish by measuring pH i regulation in 10 different fish species that are broadly phylogenetically separated, spanning six orders, eight families and 10 genera. Contrary to previous views, we show that preferential pH i regulation is the most common strategy for acid–base regulation within...

... polychaete occurs via dentrically branched and well-vascularized branchiae, which exhibit a high abundance of three ammonia transporters and a Rhesus-like protein. AMTs Gill morphology V-ATPase cAMP Acid–base regulation HEA Ammonia (in this study NH 3 refers to gaseous ammonia, NH 4...

... regulation has been identified in several adult fish species and an aquatic amphibian, but never in adult amniotes. Recently, common snapping turtles were observed to preferentially regulate pH i during development; the pattern of acid–base regulation in these species shifts from preferential pH i regulation...

... disturbances. This pattern of acid–base regulation has never been observed before in amniotes. Acid–base regulation Development Reptile Preferential pH i regulation Hypercarbia Amniotes Physiology CO 2 The nests of many reptiles naturally experience changes in CO 2 levels, often...

... in mouse cultured spinal neurones . J. Physiol.   385 , 243 - 286 . 10.1113/jphysiol.1987.sp016493 Brauner , C. J. and Baker , D. W. ( 2009 ). Patterns of Acid-base Regulation During Exposure to Hypercarbia in Fishes. Cardio-respiratory Control in Vertebrates , pp. 43 - 63 . Berlin...

.... and J.M.W. revised the manuscript. Competing interests The authors declare no competing financial interests. 21 10 2013 20 5 2014 © 2014. Published by The Company of Biologists Ltd 2014 Carp Cyprinus carpio Kidney Acid–base regulation Ion regulation Renal...

... in marine invertebrates. Our pH e measurements suggest that A. filiformis is a weak acid–base regulator, similar to other echinoderms, which cannot fully compensate for an extracellular acidosis during environmental hypercapnia. However, in accordance to other echinoderms (see Stumpp et al., 2012...

.... P. , Sakmann   B. ( 1987 ). Mechanism of anion permeation through channels gated by glycine and gamma-aminobutyric acid in mouse cultured spinal neurones . J. Physiol.   385 , 243 - 286 . Brauner   C. J. , Baker   D. W. ( 2009 ). Patterns of acid-base regulation during...

... that serotonin is involved in hemolymph acid–base balance is discussed. * Author for correspondence( [email protected] ) 20 8 2009 2009 Aedes aegypti serotonin hemolymph acid–base regulation SSRI Disruption of endocrine regulation of developmental programs is a useful insect...

...K. M. Gilmour; S. F. Perry SUMMARY Carbonic anhydrase (CA) is the zinc metalloenzyme that catalyses the reversible reactions of CO 2 with water. CA plays a crucial role in systemic acid–base regulation in fish by providing acid–base equivalents for exchange with the environment. Unlike air...

... physiological evidence in other species. e-mail: [email protected] 21 1 2009 2009 mitochondria-rich cells embryo ion regulation acid–base regulation Homeostasis of body fluids is vital for vertebrates including fish. Compared with terrestrial vertebrates, fish face...

... Ursachen. Deut. Arch. Klin. Med. 117 , 497 -516. Evans, D. H., Piermarini, P. M. and Choe, K. P. ( 2005 ). The multifunctional fish gill: dominant site of gas exchange, osmoregulation, acid-base regulation, and excretion of nitrogenous waste. Physiol. Rev. 85 , 97 -177. Finke, M. D...

... The Company of Biologists Limited 2006 2006 Na + /H + -exchanger 2 (NHE2) Na + /K + -ATPase V-H + -ATPase acid-base regulation Myoxocephalus octodecemspinosus longhorn sculpin teleost fish Long-term compensation of pH changes due to the breakdown of carbohydrates,fats and proteins...

...Martin Tresguerres; Fumi Katoh; Heather Fenton; Edyta Jasinska; Greg G. Goss SUMMARY To study the mechanisms of branchial acid-base regulation, Pacific spiny dogfish were infused intravenously for 24 h with either HCl (495± 79μmol kg -1 h -1 ) or NaHCO 3 (981±235μmol kg -1 h -1 ). Infusion of HCl...

... and degree of pH recovery during hypercapnia. Waters of the Amazon are characteristically dilute in ions, which may have consequences for acid-base regulation during environmental hypercapnia in endemic fishes. The armoured catfish Liposarcus pardalis , from the Amazon, was exposed to a water P CO 2 of 7, 14...

...-mail: [email protected] 30 09 1999 29 11 1999 © 1999 by Company of Biologists 1999 global warming heat exposure heat death temperature-induced anaerobiosis succinate oxygen consumption Arrhenius activation energy free energy change of ATP hydrolysis acid–base regulation...

...-bremerhaven.de † Present address: Institut für Tierphysiologie, Freie Universität Berlin, Grunewaldstrasse 34, D-12165, Berlin, Germany 9 10 1997 9 12 1997 © The Company of Biologists Limited 1988 acid–base regulation ammonia excretion buffer value CO2 partial pressure...

... that occurs during metamorphosis. * Author for correspondence (e-mail: [email protected] ). 17 07 1997 ©The Company of Biologists Limited 1997 acid–base regulation hypercapnia pH compensation fixed buffer resources transfer of acid–base equivalents Rana catesbeiana...