Oecologia

, Volume 160, Issue 3, pp 493–506

Temperature-dependent sex determination and global change: are some species at greater risk?

  • Vincent Hulin
  • Virginie Delmas
  • Marc Girondot
  • Matthew H. Godfrey
  • Jean-Michel Guillon
Population Ecology - Original Paper

DOI: 10.1007/s00442-009-1313-1

Cite this article as:
Hulin, V., Delmas, V., Girondot, M. et al. Oecologia (2009) 160: 493. doi:10.1007/s00442-009-1313-1

Abstract

In species with temperature-dependent sex determination (TSD), global climate change may result in a strong sex ratio bias that could lead to extinction. The relationship between sex ratio and egg incubation at constant temperature in TSD species is characterized by two parameters: the pivotal temperature (P) and the transitional range of temperature that produces both sexes (TRT). Here, we show that the proportion of nests producing both sexes is positively correlated to the width of the TRT by a correlative approach from sex ratio data collected in the literature and by simulations of TSD using a mechanistic model. From our analyses, we predict that species with a larger TRT should be more likely to evolve in response to new thermal conditions, thus putting them at lower risk to global change.

Keywords

Pivotal temperature Transitional range of temperature Global warming Sex ratio Turtles 

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Vincent Hulin
    • 1
    • 2
  • Virginie Delmas
    • 1
    • 2
    • 3
  • Marc Girondot
    • 1
    • 2
    • 4
  • Matthew H. Godfrey
    • 5
  • Jean-Michel Guillon
    • 1
    • 2
  1. 1.Laboratoire Ecologie, Systématique et Evolution (UMR8079), Faculté des Sciences d’OrsayUniversité Paris-SudOrsayFrance
  2. 2.AgroParisTechCNRSOrsayFrance
  3. 3.Centre d’Etudes Biologiques de ChizéCNRSBeauvoir-sur-NiortFrance
  4. 4.Département de Systématique et EvolutionMuséum National d’Histoire Naturelle de ParisParisFrance
  5. 5.North Carolina Wildlife Resources CommissionBeaufortUSA

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