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Seasonal variation in the thermal acclimation of critical thermal maxima (CTMax) and minima (CTMin) in the salamanderEurycea bislineata

Authors
Journal
Journal of Thermal Biology
0306-4565
Publisher
Elsevier
Publication Date
Volume
7
Issue
1
Identifiers
DOI: 10.1016/0306-4565(82)90016-x
Keywords
  • Thermal Acclimation
  • Temperature Tolerance
  • Seasonal Variation
  • Critical Thermal Maxima
  • Critical Thermal Minima
  • Salamanders
  • Eurycea Bislineata
Disciplines
  • Biology

Abstract

Abstract 1. 1.|The time courses of CTMax and CTmin acclimation were determined in spring (April) and summer (August) collected Eurycea bislineata. 2. 2.|Spring collected salamanders showed a very rapid overshoot pattern of CTMax acclimation. The response pattern of summer animals was slower and hyperbolic, but with a somewhat greater magnitude of change. 3. 3.|Both CTMin time courses were hyperbolic, but summer animals showed a greater rate and lesser magnitude of acclimation. 4. 4.|Acclimation of CTMax and CTMin thus varies seasonally, and these separate responses have a degree of physiological independence. This may have adaptive value for salamanders exposed to seasonal vacillations of temperature.

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