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Osmotic constituents of the blood plasma and abdominal muscle of the stomatopod,Squilla mantis

Authors
Journal
Comparative Biochemistry and Physiology Part A Physiology
0300-9629
Publisher
Elsevier
Publication Date
Volume
94
Issue
3
Identifiers
DOI: 10.1016/0300-9629(89)90127-8

Abstract

Abstract 1. 1. The principal osmotic constituents of plasma and muscle have been determined. 2. 2. Compared with sea-water, plasma shows increases in sodium and calcium, with reductions in potassium, magnesium, chloride and sulphate. Plasma is isosmotic with sea-water. 3. 3. Ions form about 47% of the constituents analysed in muscle, amino acids 33%, trimethylamine oxide 6.9% and betaine 12%. 4. 4. Calculated osmolalities of sea-water and plasma using osmotic coefficients agree reasonably well with determined osmolalities.

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