Preliminary report on effect of bullfrogs in wetland herpetofaunas in southeastern Arizona

C. R. Schwalbe, P. C. Rosen

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

Ranid frogs (Rana catesbeiana, R. chiricahuensis, R. yavapaiensis), garter snakes (Thamnophis eques, T. marcianus) and Sonoran mud turtles (Kinosternon sonoriense) were surveyed. Distribution of the introduced bullfrog R. catesbeiana was negatively correlated with distributions of the 2 leopard frogs and garter snakes. The hypothesis that bullfrog predation caused decline of a native wetland herpetofauna is supported by data on bullfrog diet, on garter snake, leopard frog and mud turtle population structure, and natural history observations on the snakes. Experimental removal of bullfrogs has been initiated at the San Bernardino National Wildlife Refuge. -from Authors

Original languageEnglish (US)
Pages (from-to)166-173
Number of pages8
JournalGeneral Technical Report - US Department of Agriculture, Forest Service
Issue numberRM-166
StatePublished - Jan 1 1988
Externally publishedYes

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

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