Lizards are vertebrate ectotherms, which like other animals maintain their body temperature (Tb) within a relatively narrow range in order to carry out crucial physiological processes during their life cycle. The preferred body temperature (Ts) that a lizard voluntarily selects in a laboratory thermal gradient provides a reasonable estimate of what a lizard would attain in the wild with a minimum of associate costs in absence of constraints for thermoregulation. In this study we evaluated accuracy of modified iButtons to estimate Tb and Ts of three lizard species (Sceloporus poinsettii and Sceloporus jarrovii in northeastern Durango, and Ctenosaura oaxacana in southern Oaxaca, Mexico). We used linear regression models to obtain equations for predicting Tb and Ts of these species from iButtons. Results from regression models showed that TiButton is a good indicator of Tb for S. jarrovii and S. poinsettii during calibration process. In the same way, TiButton is a good indicator of Ts for S. poinsettii, S. jarrovii and C. oaxacana through experimental gradient. Thus, external measurements using modified iButtons provided an accurate measurement of Tb for S. jarrovii and S. poinsettii and Ts for three species of lizards in this study. In laboratory, body temperature (Tb), and preferred temperature (Ts) obtained from S. jarrovii and S. poinsettii fell within the range of Tbs of other lizards in the family Phrynosomatidae. Ts measured for S. jarrovii, S. poinsettii, and C. oaxacana are within the range observed for lizards. Therefore, thermal preferences appear more phylogenetic that certain environmental factors present in each population of lizards of this group.
Keywords:
Published on: Dec 22, 2018 Pages: 1-4
Full Text PDF
Full Text HTML
DOI: 10.17352/gje.000007
CrossMark
Publons
Harvard Library HOLLIS
Search IT
Semantic Scholar
Get Citation
Base Search
Scilit
OAI-PMH
ResearchGate
Academic Microsoft
GrowKudos
Universite de Paris
UW Libraries
SJSU King Library
SJSU King Library
NUS Library
McGill
DET KGL BIBLiOTEK
JCU Discovery
Universidad De Lima
WorldCat
VU on WorldCat
PTZ: We're glad you're here. Please click "create a new query" if you are a new visitor to our website and need further information from us.
If you are already a member of our network and need to keep track of any developments regarding a question you have already submitted, click "take me to my Query."