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Growth selected temperature and CTM of young snapping turtles, Chelydra serpentina
Journal article   Peer reviewed

Growth selected temperature and CTM of young snapping turtles, Chelydra serpentina

Loren U. Williamson, James R. Spotila and Edward A. Standora
Journal of thermal biology, v 14(1), pp 33-39
1989

Abstract

acclimation temperature Chelyda serpentina critical thermal maximum CTM growth rate hatclings preferred body temperature reptile selected temperature snapping turtles thermal ecology thermo-regulation
1. 1.Snapping turtle hatchings raised at 25°C ate freely and grew from 7.4 to 50.7 g in 1 year, while those at 15°C ate little and did not grow. 2. 2.Selected body temperature in a terrestrial gradient were similar for 15 and 25°C in fall/winter and spring (if X ̄ =24.6° C ). In spring, turtles from 15 and 25°C had similar selected temperatures in an aquatic temperature gradient (if X ̄ =28.0° C ). 3. 3.The CTM of 25°C turtle was significantly higher ((if X ̄ =41.1° C ) than that of 15°C turtles (if X ̄ =39.1° C ). We transferred the 15°C turtles to 25°C and the 25°C to 15°C. After 1 week the CTMs were the same. When transferred for 3 weeks, 15–25°C turtles had a significant higher CTM (if X ̄ =41.4° C ) than 25-15°C turtles (if X ̄ =39.6° C ). 4. 4.Thus, the CTM is directly related to acclimation temperature but selected temperature is independent of acclimation temperature, growth rate and age.

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Collaboration types
Domestic collaboration
Web of Science research areas
Biology
Zoology
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