Sex determination in Cagle's map turtle: implications for evolution, development, and conservation

Academic Article


  • Graptemys caglei exhibits temperature-dependent sex determination, with high incubation temperatures producing only females and low temperatures producing only males. The estimated pivotal temperature (c 30.0°C) is higher than those reported for other species of Graptemys in North America, but interspecific variations in pivotal temperature are small (0.5-1.0°C). Alterations to a single river system could potentially impact the reproductive success of this species by changing nest temperatures and, thus, population sex ratio(s). -from Authors
  • Authors

    Published In

    Digital Object Identifier (doi)

    Author List

  • Wibbels T; Killebrew FC; Crews D
  • Start Page

  • 2693
  • End Page

  • 2696
  • Volume

  • 69
  • Issue

  • 10