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First published online May 24, 2004
Journal of Experimental Biology 207, 2313-2321 (2004)
Published by The Company of Biologists 2004
doi: 10.1242/jeb.01024
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Osmotic regulation in adult Drosophila melanogaster during dehydration and rehydration

Melissa A. Albers* and Timothy J. Bradley

Department of Ecology and Evolutionary Biology, University of California, Irvine, CA 92612, USA



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  		Fig. 1. Observed hemolymph osmolality ({blacksquare}) and theoretical hemolymph osmolality ({diamondsuit}) in C populations as a function of proportional dehydration of the hemolymph. Proportional dehydration of the hemolymph represents a decline of hemolymph as numbers increase. For example, at a value of 2, the flies lost 50% of their hemolymph, at 4 they lost 75%, etc. The solid and broken lines are the means of the slopes for the five observed and theoretical slopes, respectively.

 


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  		Fig. 2. Observed hemolymph osmolality (•) and theoretical hemolymph osmolality ({diamondsuit}) in D populations as a function of proportional dehydration of the hemolymph. The solid and broken lines are the means of the slopes for the five observed and five theoretical slopes, respectively.

 


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  		Fig. 3. Mean hemolymph volume of the C populations prior to desiccation, after 8 h of desiccation and after recovery from desiccation on distilled water (W), saline (S) or saline+sucrose (S+S). Broken-lined bars represent data published in a previous study (Folk and Bradley, 2003Go). Error bars represent S.E.M.

 


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  		Fig. 4. Mean hemolymph volume of the D populations prior to desiccation, after 24 h of desiccation and after recovery from desiccation on distilled water (W), saline (S) or saline+sucrose (S+S). Broken-lined bars represent data published in a previous study (Folk and Bradley, 2003Go). Error bars represent S.E.M.

 


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  		Fig. 5. Mean hemolymph osmolality of the C populations prior to desiccation, after 8 h desiccation and after recovery from desiccation on distilled water (W), saline (S) or saline+sucrose (S+S). Error bars represent S.E.M.

 


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  		Fig. 6. Mean hemolymph osmolality of the D populations prior to desiccation, after 24 h desiccation and after recovery from desiccation on distilled water (W), saline (S) or saline+sucrose (S+S). Error bars represent S.E.M.

 

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© The Company of Biologists Ltd 2004