Longevity Estimates of Ornate Box Turtles (Terrapene ornata) in Iowa

Neil P. Bernstein; S. Andy McCollum; Terry J. VanDeWalle; Robert W. Black; Richard R. Rhodes II; Daniel F. Hughes

doi:10.2744/CCB-1578.1

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Neil P. Bernstein,^1,2,* S. Andy McCollum,^3,4 Terry J. VanDeWalle,⁵ Robert W. Black,^3,** Richard R. Rhodes II,^6,** Daniel F. Hughes⁷

¹Department of Natural and Applied Sciences, Mount Mercy University, Cedar Rapids, Iowa 52402 USA []
²Department of Earth and Environmental Sciences, University of Iowa, Iowa City, Iowa 52242 USA
³Departments of Biology and Mathematics, Cornell College, Mount Vernon, Iowa 52314 USA []
⁴The Tangled Bank, 1122 Ivanhoe Road, Mount Vernon, Iowa 52314 USA
⁵Stantec Consulting Services Inc, 2300 Swan Lake Boulevard, Independence, Iowa 50644 USA []
⁶Iowa City, Iowa 52242 USA
⁷Department of Biology, Coe College, Cedar Rapids, Iowa 52402 USA []

^*Corresponding author
^**Deceased

Abstract

Most studies on wild ornate box turtles (Terrapene ornata) estimate maximum age in the 30s with some data suggesting that individuals may live beyond 50. We present data from a 29-yr study of 374 marked turtles in which at least 44% lived into their 30s and at least 3.5% survived into their 40s. Females may survive longer than males. Older turtles can affect reproductive potential of the population; therefore, conservation and management for this state-threatened species should account for longer lifespans than previously assumed.

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Neil P. Bernstein, S. Andy McCollum, Terry J. VanDeWalle, Robert W. Black, Richard R. Rhodes II, and Daniel F. Hughes "Longevity Estimates of Ornate Box Turtles (Terrapene ornata) in Iowa," Chelonian Conservation and Biology 22(2), 220-224, (17 January 2024). https://doi.org/10.2744/CCB-1578.1

Received: 28 January 2023; Accepted: 28 June 2023; Published: 17 January 2024

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