Literaturdatenbank
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Moon, D., Owens, D. W., & MacKenzie, D. S. (1999). The effects of fasting and increased feeding on plasma thyroid hormones, glucose, and total protein in sea turtles. Zoological Science, 16(4), 579–586.
Added by: Admin (14 Aug 2008 22:46:51 UTC) |
| Resource type: Journal Article BibTeX citation key: Moon1999 View all bibliographic details  |
Categories: General Keywords: Blut = blood, Chelonia, Chelonia mydas, Cheloniidae, Ernährung = nutrition, Lepidochelys, Physiologie = physiology, Schildkröten = turtles + tortoises Creators: MacKenzie, Moon, Owens Collection: Zoological Science |
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| Abstract |
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The effects of 2 weeks of fasting and 2 weeks increased feeding on plasma thyroid hormones, glucose and total protein concentrations were investigated in 8 immature green (Chelonia mydas) and 8 Kemp's ridley (Lepidochelys kempi) sea turtles. Under constant temperature, nutritional status affected plasma thyroid hormones and glucose concentrations, but not protein level in both species. Plasma thyroxine (T4) in green turtles decreased with food deprivation, but did not do so in Kemp's ridley turtles. Increased feeding did not affect circulating concentrations of plasma T4 in either species. Plasma triiodothyronine (T3), in contrast, tended to decrease during fasting and increase with refeeding or increased feeding. Blood glucose concentration decreased with food deprivation, but remained constant during increased feeding. It is concluded that sea turtles may use glycogen or lipid during short-term fasting as in endothermic vertebrates
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