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1 December 2010 Distribution and Abundance of Invasive Red-Eared Sliders (Trachemys scripta elegans) in California's Sacramento River Basin and Possible Impacts on Native Western Pond Turtles (Emys marmorata)
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Abstract

We present baseline data on the distribution and abundance of invasive red-eared slider turtles (Trachemys scripta elegans) in the Sacramento River basin of northern California and discuss their possible impacts on the native western pond turtle, Emys [ =  Actinemys] marmorata. Although T. s. elegans may be able to spread throughout the drainage, our surveys suggest that it is currently concentrated near urban areas and relatively rare throughout most of the areas where large Emys marmorata populations persist. We also confirm 2 additional localities where extralimital breeding of T. s. elegans is occurring.

Robert C. Thomson, Phillip Q. Spinks, and H. Bradley Shaffer "Distribution and Abundance of Invasive Red-Eared Sliders (Trachemys scripta elegans) in California's Sacramento River Basin and Possible Impacts on Native Western Pond Turtles (Emys marmorata)," Chelonian Conservation and Biology 9(2), (1 December 2010). https://doi.org/10.2744/CCB-0820.1
Received: 3 December 2009; Accepted: 1 September 2010; Published: 1 December 2010
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