Isosmotic points and their ecological significance for juvenile Chinese sturgeon Acipenser sinensis. Issue 4 (23rd January 2015)

• Record Type: Journal Article
• Authors: Zhao, F.; Zhuang, P.; Zhang, T.; Wang, Y.; Hou, J.; Liu, J.; Zhang, L.
• Is Part Of: Journal of fish biology. Volume 86:Issue 4(2015)
• Page Start: 1416
• Page End: 1420
• Publication Date: 2015-01-23
• Subjects: Fishes -- Periodicals; Fishes -- Great Britain -- Periodicals; 597
• DOI: 10.1111/jfb.12609
• Languages: English
• ISSNs: 0022-1112

Abstract

<abstract abstract-type="main" id="jfb12609-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p id="jfb12609-para-0001">Serum osmolality and ion concentrations were measured in juvenile Chinese sturgeon <italic>Acipenser sinensis</italic> at different salinities to determine the isosmotic point. Isosmotic and isoionic concentrations were calculated from the regressions for serum and ambient osmolality, with Na⁺, Cl⁻ and K⁺ as salinities 9·19, 8·17, 7·89 and 9·70, respectively. These values were consistent with the salinity of the habitat where juvenile <italic>A. sinensis</italic> occur in the Yangtze Estuary, suggesting that an isosmotic salinity is an important factor driving their habitat choice.</p> </abstract>