Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.resp.2006.04.003
DC FieldValue
dc.titleAmmonia as a respiratory gas in water and air-breathing fishes
dc.contributor.authorRandall, D.J.
dc.contributor.authorIp, Y.K.
dc.date.accessioned2014-10-27T08:21:21Z
dc.date.available2014-10-27T08:21:21Z
dc.date.issued2006-11
dc.identifier.citationRandall, D.J., Ip, Y.K. (2006-11). Ammonia as a respiratory gas in water and air-breathing fishes. Respiratory Physiology and Neurobiology 154 (1-2) : 216-225. ScholarBank@NUS Repository. https://doi.org/10.1016/j.resp.2006.04.003
dc.identifier.issn15699048
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/100042
dc.description.abstractAmmonia is produced in the liver and excreted as NH3 by diffusion across the gills. Elevated ammonia results in an increase in gill ventilation, perhaps via stimulation of gill oxygen chemo-receptors. Acidification of the water around the fish by carbon dioxide and acid excretion enhances ammonia excretion and constitutes "environmental ammonia detoxification". Fish have difficulties in excreting ammonia in alkaline water or high concentrations of environmental ammonia, or when out of water. The mudskipper, Periphthalmodon schlosseri, is capable of active NH4 + transport, maintaining low internal levels of ammonia. To prevent a back flux of NH3, these air-breathing fish can increase gill acid excretion and reduce the membrane NH3 permeability by modifying the phospholipid and cholesterol compositions of their skin. Several air-breathing fish species can excrete ammonia into air through NH3 volatilization. Some fish detoxify ammonia to glutamine or urea. The brains of some fish can tolerate much higher levels of ammonia than other animals. Studies of these fish may offer insights into the nature of ammonia toxicity in general. © 2006.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.resp.2006.04.003
dc.sourceScopus
dc.subjectAcid excretion
dc.subjectAir-breathing
dc.subjectAmmonia
dc.subjectAmmonia excretion
dc.subjectGlutamine
dc.subjectNitrogen metabolism
dc.subjectUrea
dc.typeArticle
dc.contributor.departmentBIOLOGICAL SCIENCES
dc.description.doi10.1016/j.resp.2006.04.003
dc.description.sourcetitleRespiratory Physiology and Neurobiology
dc.description.volume154
dc.description.issue1-2
dc.description.page216-225
dc.description.codenRPNEA
dc.identifier.isiut000242695700017
Appears in Collections:Staff Publications

Show simple item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

41
checked on May 12, 2022

WEB OF SCIENCETM
Citations

36
checked on May 12, 2022

Page view(s)

167
checked on May 12, 2022

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.