Literaturdatenbank
Literaturdatenbank |
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Balletto, E., Cherchi, M. A., Melodia, F., & Mensi, P. (1979). Temperature-dependent thyroid hormone biosynthesis in testudo horsfieldi gray. General and Comparative Endocrinology, 39(4), 548–551.
Added by: Admin (06 Jan 2014 18:24:01 UTC) |
| Resource type: Journal Article DOI: http://dx.doi.org/10.1016/0016-6480(79)90244-2 BibTeX citation key: Balletto1979 View all bibliographic details  |
Categories: General Keywords: Physiologie - physiology, Schildkröten - turtles + tortoises Creators: Balletto, Cherchi, Melodia, Mensi Collection: General and Comparative Endocrinology |
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| Abstract |
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Testudinidae In the tortoise Testudo horsfieldi Gray the plasma concentrations of thyroxine and triiodothyronine are strongly temperature dependent, the levels of both hormones being lowest within a seasonal normal activity range (23–33° cloacal) and highest outside such a thermic interval. Anoxia-induced high levels of T3 and T4 are consistent with those found in speciments under thermal stress. A new hypothesis on the phylogeny of physiological thermoregulation is put forward.
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