| Brooks, R. J., Krawchuk, M. A., Stevens, C., & Koper, N. (1997). Testing the precision and accuracy of age estimation using lines in scutes of chelydra serpentina and chrysemys picta. Journal of Herpetology, 31(4), 521–529. |
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| Added by: Admin 17 Aug 2008 18:54:42 UTC |
Pop. 2.75%
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| Krawchuk, M. A., & Brooks, R. J. (1998). Basking behavior as a measure of reproductive cost and energy allocation in the painted turtle, chrysemys picta. Herpetologica, 54(1), 112–121. |
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| Added by: Admin 14 Aug 2008 20:40:43 UTC |
Pop. 1.75%
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| Krawchuk, M. A., Koper, N., & Brooks, R. J. (1997). Observations of a possible cleaning symbiosis between painted turtles, chrysemys picta, and snapping turtles, chelydra serpentina, in central ontario. Canadian Field Naturalist, 111(2), 315–317. |
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| Added by: Sarina Wunderlich 24 May 2009 21:32:28 UTC |
Pop. 2.25%
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