Temperature, field activity and post-feeding metabolic response in the Asian house gecko, Hemidactylus frenatus

Lei, Juan and Booth, David T. (2014) Temperature, field activity and post-feeding metabolic response in the Asian house gecko, Hemidactylus frenatus. Journal of Thermal Biology, 45 175-180. doi:10.1016/j.jtherbio.2014.09.006


Author Lei, Juan
Booth, David T.
Title Temperature, field activity and post-feeding metabolic response in the Asian house gecko, Hemidactylus frenatus
Formatted title
Temperature, field activity and post-feeding metabolic response in the Asian house gecko, Hemidactylus frenatus
Journal name Journal of Thermal Biology   Check publisher's open access policy
ISSN 1879-0992
0306-4565
Publication date 2014-10-01
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.jtherbio.2014.09.006
Open Access Status
Volume 45
Start page 175
End page 180
Total pages 6
Place of publication Kidlington, Oxford, London
Publisher Pergamon Press
Collection year 2015
Language eng
Formatted abstract
Temperature has significant effects on physiological activities and geographical distribution of ectotherms. The Asian house gecko Hemidactylus frenatus has become one of the most widely distributed reptiles in the world and is an invasive species in Australia. Since being introduced into northern Australia, Asian house geckos have spread rapidly and expanded into south-east Queensland and northern New South Wales. Despite their rapid spread, there have been few studies that address thermal adaptability of this species. In order to understand how temperature might limit the distribution and feeding behavior of H. frenatus we observed gecko foraging activities in the wild over the winter period, measured the temperature at which voluntary feeding ceases, and assessed the effect of temperature (30, 25, 20, and 18 °C) on post-feeding metabolic rate. Resting metabolic rate and post-feeding peak in metabolic rate decreased with low temperature, while the duration of elevated metabolic rate after feeding increased at lower temperature. The SDA coefficient (a ratio of the energy expended due to the post-feeding rise in metabolic rate to the energy contained within the meal) did not change systematically with ambient temperature. Field observations and voluntary feeding experiments showed that H. frenatus stop feeding when ambient temperature drops below 17 °C, so that persistent night time temperatures below 17 °C may be limiting the distribution of this species.
Keyword Temperature
Feeding
Specific dynamic action
Reptile
Asian house gecko
Hemidactylus frenatus
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Biological Sciences Publications
 
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