Literaturdatenbank
Literaturdatenbank |
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Gilles-Baillien, M. (1973). Isosmotic regulation in various tissues of the diamondback terrapin malaclemys centrata centrata (latreille). Journal of Experimental Biology, 59(1), 39–43.
Added by: Admin (25 Aug 2008 22:06:38 UTC) |
| Resource type: Journal Article BibTeX citation key: GillesBaillien1973a View all bibliographic details  |
Categories: General Keywords: Blut = blood, chemische Untersuchung = chemical analysis, Emydidae, Malaclemys, Malaclemys terrapin, Physiologie = physiology, Schildkröten = turtles + tortoises Creators: Gilles-Baillien Collection: Journal of Experimental Biology |
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| Abstract |
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Malaclemys terrapin centrata 1. Osmotic adjustment is achieved by blood and intracellular fluids in the diamond-back terrapin when acclimatized either to fresh water or to sea water. 2. The muscle adjusts its composition to a higher blood osmotic pressure by greater concentrations in ammonia, in taurine and in urea and to a lesser extent in all amino acids (aspartate excepted). The inorganic ion content is not affected. 3. In the bladder mucosa ammonia, taurine and all amino acids are more concentrated in sea-water animals. But essentially urea is responsible for the higher osmotic pressure. Of the inorganic ions only potassium shows a (slight) increase in sea-water animals. 4. In the colon mucosa there is a slight increase in the total amino acid content, in the concentrations of sodium and chloride, and a larger increase in urea. 5. In the jejunum mucosa the concentrations of amino acids, urea and K are much higher in sea-water animals. 6. The results are discussed within the framework of isosmotic regulation of intracellular fluids.
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