Tribute to R. G. Boutilier: Acid-base transfer across fish gills

D. J. Randall; T. K.N. Tsui

doi:10.1242/jeb.02100

Tribute to R. G. Boutilier: Acid-base transfer across fish gills

D. J. Randall
, T. K.N. Tsui

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

18 Citations (Scopus)

Abstract

The gills are the major site of acid-base regulation in most fish. Acid-base transfer across fish gills is dominated by carbon dioxide and ammonia excretion, especially the former. Bicarbonate buffering in the blood is less than that found in mammals; regulation of ventilation has little effect on CO₂ levels in the blood and control of ventilation is not used to regulate body pH in fish. Proton ATPase (freshwater fish), Na⁺/H ⁺ exchangers (marine fish) and anion exchangers (marine and freshwater fish) are located in the gills. These transporters contribute to the regulation of internal pH, but little is known about how this is done in fish. Fish kept in confined water volumes acidify their environment, largely due to CO₂. This acidification augments ammonia excretion and reduces ammonia toxicity. The possible involvement of ammonia recycling in acid excretion is also discussed.

Original language	English
Pages (from-to)	1179-1184
Journal	Journal of Experimental Biology
Volume	209
Issue number	7
DOIs	https://doi.org/10.1242/jeb.02100
Publication status	Published - Apr 2006

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

The work described in this paper was supported by a grant from the University Grants Committee of Hong Kong Special Administration Region, China (Project No. AoE/P-04/04). We acknowledge the help and guidance by Dr Y. K. Ip, Department of Biological Science, the National University of Singapore.

Research Keywords

Acid-base
Ammonia
Carbon dioxide
Fish
Gills

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10.1242/jeb.02100

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title = "Tribute to R. G. Boutilier: Acid-base transfer across fish gills",

abstract = "The gills are the major site of acid-base regulation in most fish. Acid-base transfer across fish gills is dominated by carbon dioxide and ammonia excretion, especially the former. Bicarbonate buffering in the blood is less than that found in mammals; regulation of ventilation has little effect on CO2 levels in the blood and control of ventilation is not used to regulate body pH in fish. Proton ATPase (freshwater fish), Na+/H + exchangers (marine fish) and anion exchangers (marine and freshwater fish) are located in the gills. These transporters contribute to the regulation of internal pH, but little is known about how this is done in fish. Fish kept in confined water volumes acidify their environment, largely due to CO2. This acidification augments ammonia excretion and reduces ammonia toxicity. The possible involvement of ammonia recycling in acid excretion is also discussed.",

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AU - Tsui, T. K.N.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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N2 - The gills are the major site of acid-base regulation in most fish. Acid-base transfer across fish gills is dominated by carbon dioxide and ammonia excretion, especially the former. Bicarbonate buffering in the blood is less than that found in mammals; regulation of ventilation has little effect on CO2 levels in the blood and control of ventilation is not used to regulate body pH in fish. Proton ATPase (freshwater fish), Na+/H + exchangers (marine fish) and anion exchangers (marine and freshwater fish) are located in the gills. These transporters contribute to the regulation of internal pH, but little is known about how this is done in fish. Fish kept in confined water volumes acidify their environment, largely due to CO2. This acidification augments ammonia excretion and reduces ammonia toxicity. The possible involvement of ammonia recycling in acid excretion is also discussed.

AB - The gills are the major site of acid-base regulation in most fish. Acid-base transfer across fish gills is dominated by carbon dioxide and ammonia excretion, especially the former. Bicarbonate buffering in the blood is less than that found in mammals; regulation of ventilation has little effect on CO2 levels in the blood and control of ventilation is not used to regulate body pH in fish. Proton ATPase (freshwater fish), Na+/H + exchangers (marine fish) and anion exchangers (marine and freshwater fish) are located in the gills. These transporters contribute to the regulation of internal pH, but little is known about how this is done in fish. Fish kept in confined water volumes acidify their environment, largely due to CO2. This acidification augments ammonia excretion and reduces ammonia toxicity. The possible involvement of ammonia recycling in acid excretion is also discussed.

KW - Acid-base

KW - Ammonia

KW - Carbon dioxide

KW - Fish

KW - Gills

UR - https://www.scopus.com/pages/publications/33646396198

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DO - 10.1242/jeb.02100

M3 - RGC 21 - Publication in refereed journal

C2 - 16547290

SN - 0022-0949

VL - 209

SP - 1179

EP - 1184

JO - Journal of Experimental Biology

JF - Journal of Experimental Biology

IS - 7

ER -

Tribute to R. G. Boutilier: Acid-base transfer across fish gills

Abstract

Bibliographical note

Funding

Research Keywords

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AoE(CityU): CityU AoE sustained funding sub-project under Prof Nora Tam

AoE(CityU): CityU AoE sustained funding sub-project under Dr Paul Shin (1)

AoE(CityU): CityU AoE sustained funding sub-project under Prof Michael Yang

Cite this

Tribute to R. G. Boutilier: Acid-base transfer across fish gills

Abstract

Bibliographical note

Funding

Research Keywords

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Projects

AoE(CityU): CityU AoE sustained funding sub-project under Prof Nora Tam

AoE(CityU): CityU AoE sustained funding sub-project under Dr Paul Shin (1)

AoE(CityU): CityU AoE sustained funding sub-project under Prof Michael Yang

Cite this