Rattlesnake Preference for Envenomated Prey: Species Specificity

David Chiszar; Adam Walters; Hobart M. Smith

doi:10.1670/148-03R.1

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David Chiszar,^1,* Adam Walters,¹ Hobart M. Smith²

¹1Department of Psychology, Campus Box 345, University of Colorado, Boulder, Colorado 80309 USA
²3Department of E. E. Biology, Campus Box 334, University of Colorado, Boulder, Colorado 80309 USA

^*Corresponding Author. E-mail: chiszar@colorado.edu

Abstract

Ten Prairie Rattlesnakes (Crotalus viridis viridis) and 10 Western Diamondback Rattlesnakes (Crotalus atrox) were offered choices between envenomated (E) and nonenvenomated (NE) mice. Both species preferred E over NE mice when envenomation was accomplished by a conspecific but not when envenomation was accomplished by the other species. However, when envenomation was accomplished by Crotalus oreganus oreganus, E mice were preferred by C. v. viridis but not by C. atrox. Accordingly, we conclude that rattlesnakes of closely related species recognize each other's E prey, whereas rattlesnakes of distantly related species do not.

Citation Download Citation

David Chiszar, Adam Walters, and Hobart M. Smith "Rattlesnake Preference for Envenomated Prey: Species Specificity," Journal of Herpetology 42(4), 764-767, (1 December 2008). https://doi.org/10.1670/148-03R.1

Accepted: 1 March 2008; Published: 1 December 2008

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