Please use this identifier to cite or link to this item: https://doi.org/10.1007/BF01987612
Title: Osmoregulation in the mudskipper, Boleophthalmus boddaerti I. Responses of branchial cation activated and anion stimulated adenosine triphosphatases to changes in salinity
Authors: Ip, Y.K. 
Lee, C.G.L.
Low, W.P.
Lam, T.J. 
Keywords: Boleophthalmus boddaerti
carbonic anhydrase
Cl--ATPase
HCO3 -
K+-ATPase
mudskipper
Na+
osmoregulation
Issue Date: Mar-1991
Citation: Ip, Y.K., Lee, C.G.L., Low, W.P., Lam, T.J. (1991-03). Osmoregulation in the mudskipper, Boleophthalmus boddaerti I. Responses of branchial cation activated and anion stimulated adenosine triphosphatases to changes in salinity. Fish Physiology and Biochemistry 9 (1) : 63-68. ScholarBank@NUS Repository. https://doi.org/10.1007/BF01987612
Abstract: The mudskipper B. boddaerti, was able to survive in waters of intermediate salinities (4-27‰). Fish submerged in dechlorinated tap water suffered 60% mortality by the fifth day while 60% of those in 100% sea-water (sw) died after the third day of exposure. After being submerged in 50% or 80% sw for 7 days, the plasma osmolality, plasma Na+ and Cl- concentrations and the branchial Na+ and K+ activated adenosine triphosphatase (Na+,K+-ATPase) activity were significantly higher than those of fish submerged in 10% sw for the same period. However, the activities of the branchial HCO3 - and Cl- stimulated adenosine triphosphatase (HCO3 -,Cl--ATPase) and carbonic anhydrase of the latter fish were significantly greater than those of the former. Such correlation suggests that Na+,K+-ATPase is important for hyperosmotic adaptation in this fish while HCO3 --Cl--ATPase and carbonic anhydrase may be involved in hypoosmotic survival. © 1991 Kugler Publications, Amsterdam/Berkeley.
Source Title: Fish Physiology and Biochemistry
URI: http://scholarbank.nus.edu.sg/handle/10635/106860
ISSN: 09201742
DOI: 10.1007/BF01987612
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