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Perch selection by post-breeding female collared lizards (Crotaphytus collaris)

Perch selection by post-breeding female collared lizards (Crotaphytus collaris) Perch selection by post-breeding female collared lizards ( Crotaphytus collaris ) Douglas Eifler 1 , Sean Fogarty 2 Lizards often respond to predators by fleeing to a refuge. Access to refuges and refuge char- acteristics are important in shaping their an- tipredator behavior. Refuge selection may be based on characteristics useful for avoiding predation (Cooper et al., 1999; Kerr et al., 2003; Martín and López, 2003), while deci- sions about when to use a refuge may depend on refuge proximity (Martín and López, 1995, 2000; Cooper, 1997, 2003a; Eifler, 2001) and other indices of predation risk (Stapley, 2003; Amo et al., 2004; Martín and López, 2005). Since successful escape often relies on refuge use, lizards could manage predation risk by con- centrating their activity in areas that allow for easy access to refuges. To determine whether lizards behave in this way, we studied perch choice by female collared lizards ( Crotaphytus collaris ), which have small areas of activity and easily identifiable potential refuges. The collared lizard is a rock-dwelling diur- nal lizard from western North America. Indi- viduals spend large amounts of time perched on exposed rocks, where they apparently survey for food, predators, and conspecifics. During the http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Amphibia-Reptilia Brill

Perch selection by post-breeding female collared lizards (Crotaphytus collaris)

Eifler, Douglas; Fogarty, Sean
Amphibia-Reptilia , Volume 27 (3): 3 – Jan 1, 2006
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Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0173-5373
eISSN
1568-5381
DOI
10.1163/156853806778190132
Publisher site
See Article on Publisher Site

Abstract

Perch selection by post-breeding female collared lizards ( Crotaphytus collaris ) Douglas Eifler 1 , Sean Fogarty 2 Lizards often respond to predators by fleeing to a refuge. Access to refuges and refuge char- acteristics are important in shaping their an- tipredator behavior. Refuge selection may be based on characteristics useful for avoiding predation (Cooper et al., 1999; Kerr et al., 2003; Martín and López, 2003), while deci- sions about when to use a refuge may depend on refuge proximity (Martín and López, 1995, 2000; Cooper, 1997, 2003a; Eifler, 2001) and other indices of predation risk (Stapley, 2003; Amo et al., 2004; Martín and López, 2005). Since successful escape often relies on refuge use, lizards could manage predation risk by con- centrating their activity in areas that allow for easy access to refuges. To determine whether lizards behave in this way, we studied perch choice by female collared lizards ( Crotaphytus collaris ), which have small areas of activity and easily identifiable potential refuges. The collared lizard is a rock-dwelling diur- nal lizard from western North America. Indi- viduals spend large amounts of time perched on exposed rocks, where they apparently survey for food, predators, and conspecifics. During the

Journal

Amphibia-Reptilia – Brill

Published: Jan 1, 2006

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