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Influence of season, photoperiod and thermal acclimation on the panting threshold ofAmphibolurus muricatus

✍ Scribed by Heatwole, Harold ;Firth, Bruce T. ;Stoddart, Helen

Publisher
John Wiley and Sons
Year
1975
Tongue
English
Weight
646 KB
Volume
191
Category
Article
ISSN
0022-104X

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✦ Synopsis

Abstract

The panting threshold of Amphibolurus muricatus progressively elevates with increasing acclimation temperature. It is also elevated by long (16L:8D) photoperiod in comparison to values obtained under constant photic conditions or short photoperiods. There is a seasonal cycle (higher thresholds in the austral summer than in other seasons) which is independent of shortterm thermal acclimation or photoperiod. A fluctuating temperature regimen of eight hours at 6°C and 16 hours at 26°C under constant light resulted in a panting threshold intermediate between values for animals acclimated at constant 5°C and those acclimated at constant 26°C.

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