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HERPETOLOGICA VOL. 58 NO. 4DECEMBER 2002
 

Summary: 399
HERPETOLOGICA
VOL. 58 NO. 4DECEMBER 2002
Herpetologica, 58(4), 2002, 399407
2002 by The Herpetologists' League, Inc.
NEST-SITE SELECTION IN RELATION TO TEMPERATURE
AND MOISTURE BY THE LIZARD SCELOPORUS UNDULATUS
DANIEL A. WARNER1,2,3
AND ROBIN M. ANDREWS1
1
Department of Biology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
ABSTRACT: Development and survival of reptilian embryos are affected by the temperature and
moisture within the nest. Moreover, thermal and hydric conditions during incubation also affect
phenotypes of hatchlings. Thus, females should select nest sites that enhance hatching success and
produce hatchlings with phenotypes fit for the local environment. The objective of this study was
to determine the substrate temperature and moisture conditions selected by eastern fence lizards
(Sceloporus undulatus) for nesting. In the laboratory, gravid females were housed in a large enclo-
sure that provided suitable nesting substrate. Gradients of temperature and moisture within the
substrate were established to provide a wide range of conditions from which females could choose.
Fifteen (65%) females selected nest conditions within the moisture and temperature range that

  

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

 

Collections: Environmental Sciences and Ecology