First Evidence of Muskrat (Ondatra zibethicus) in the Diet of the Blanding's Turtle (Emydoidea blandingii)

Joseph S. Cannizzaro IV; Sandra L. Koch; William H. Graser III

doi:10.1656/045.030.0306

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Joseph S. Cannizzaro IV,^1,* Sandra L. Koch,² William H. Graser III³

¹Department of Biological Sciences, University of Wisconsin-Milwaukee, Milwaukee, WI 53211.
²McCrone Associates, Westmont, IL 60559.
³Kane County Forest Preserve District, Geneva, IL 60134.

^*Corresponding author - canniz22@uwm.edu.

Abstract

We discovered mammalian hair in the feces of an adult female Emydoidea blandingii (Blanding's Turtle) in a palustrine marsh in northern Illinois on 28 April 2021. Comparison and analysis of guard-hair length, proximal shaft pattern, and cross section of the shield region revealed the hair to be that of an Ondatra zibethicus (Muskrat). This is the first recorded mammalian food item of a Blanding's Turtle and is the second time a novel prey item has been documented in the diet of a Blanding's Turtle at this site. In light of this discovery, we suggest a need for additional diet studies on this turtle.

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Joseph S. Cannizzaro IV, Sandra L. Koch, and William H. Graser III "First Evidence of Muskrat (Ondatra zibethicus) in the Diet of the Blanding's Turtle (Emydoidea blandingii)," Northeastern Naturalist 30(3), N31-N34, (31 August 2023). https://doi.org/10.1656/045.030.0306

Published: 31 August 2023

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