Osmotic and Ionic Regulation in the Ghost Crab Ocypode'saratan in Hypoionic and HyperionicMedia and Following Desiccation in Air
A.H. AL-WASSIA and A.A. ESHKY
Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia

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  1. Abstract
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1.Sodium. potassium and magnesium ion concentrations in the blood of Ocypode were hypoionic (0 normal and concentrated sea water. 2. Over the entire salinity range tested calcium ion concentration was found to remain fairly constant and hyperionic to all media. 3. The changes in haemolymph sodium concentration reflect the changes in tQtal osmotic concentration. 4. Death from desiccation related directly to weight loss,indicatiogthaf wa~er loss probably as circulatin& ha~molymph volume was the critical factor, rather than ionic concentration.

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Published in : Journal of King Abdul Aziz University.
Science Journal .
Volume No : 3 , Issue 1 , 1991 .
DOI : 10.4197/sci.3-1.7 .
Pages 91 -100
© 2008 King Abdulaziz University - Scientific Publishing Center