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GEOGRAPHIC VARIATION IN FIELD BODY TEMPERATURE OF SCELOPORUS LIZARDS
 

Summary: GEOGRAPHIC VARIATION IN FIELD BODY
TEMPERATURE OF SCELOPORUS LIZARDS
ROBIN M. ANDREWS{1
1
Department of Biology, Virginia Polytechnic Institute and State University, Blacksburg,
VA 24061-0406, USA
(Received 29 January 1998; accepted in revised form 4 May 1998)
AbstractŠ1. Using data from the literature, I assessed how broad climatic patterns aected ®eld body
temperatures (Tb's) of lizards in the genus Sceloporus.
2. Sceloporus at temperate latitudes had mean Tb's of 358C throughout their elevational range. This
pattern is associated with ``tropical'' temperatures that extend into high north latitudes during the sum-
mer and the relatively low elevations occupied by the lizards.
3. At tropical latitudes, mean Tb declined from 358C at low elevations to 318C at high elevations.
This pattern is associated with low seasonal variation in temperature at tropical latitudes and the rela-
tively high elevations occupied by the lizards. # 1998 Elsevier Science Ltd. All rights reserved
Key Word Index: Sceloporus; thermoregulation; selected body temperature; lizard
INTRODUCTION
The lizard genus Sceloporus has long been considered
to be thermally conservative. For example, ®eld body
temperatures measured during the normal activity

  

Source: Andrews, Robin - Department of Biological Sciences, Virginia Tech

 

Collections: Environmental Sciences and Ecology