Literaturdatenbank
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Williamson, L. U., Spotila, J. R., & Standora, E. A. (1991). Growth, selected temperature and ctm of young snapping turtles, chelydra serpentina. Journal of Thermal Biology, 14 (1)(1), 33–39.
Added by: Admin (24 Aug 2008 17:40:18 UTC) Last edited by: Beate Pfau (07 Feb 2009 08:44:20 UTC) |
| Resource type: Journal Article BibTeX citation key: Williamson1991a View all bibliographic details  |
Categories: General Keywords: Chelydra, Chelydra serpentina, Chelydridae, Haltung = husbandry, Physiologie = physiology, Schildkröten = turtles + tortoises Creators: Spotila, Standora, Williamson Collection: Journal of Thermal Biology |
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| Abstract |
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Snapping turtle (Chelydra serpentina ) hatchlings raised at 25 degree C ate freely and grew from 7.4 to 50.7 g in 1 year, while those at 15 degree C ate little and did not grow. Selected body temperature in a terrestrial gradient were similar for 15 and 25 degree C in fall/winter and spring (X = 24.6 degree C). In spring, turtles from 15 and 25 degree C had similar selected temperatures in an aquatic temperature gradient (X = 28.0 degree C). The CTM of 25 degree C turtles was significantly higher (X = 41.1 degree C) than that of 15 degree C turtles (X = 39.1 degree C). The 15 degree C turtles were transferred to 25 degree C and the 25 degree C turtles to 15 degree C. After 1 week the CTMs were the same. When transferred for 3 weeks, 15-25 degree C turtles had a significantly higher CTM (X = 41.4 degree C) than 25-15 degree C turtles (X = 39.6 degree C). Thus, the CTM is directly related to acclimation temperature but selected temperature is independent of acclimation temperature, growth rate and age.
Added by: Admin Last edited by: Beate Pfau |