Oecologia

, Volume 160, Issue 3, pp 493–506

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

Authors

    • Laboratoire Ecologie, Systématique et Evolution (UMR8079), Faculté des Sciences d’OrsayUniversité Paris-Sud
    • AgroParisTechCNRS
  • Virginie Delmas
    • Laboratoire Ecologie, Systématique et Evolution (UMR8079), Faculté des Sciences d’OrsayUniversité Paris-Sud
    • AgroParisTechCNRS
    • Centre d’Etudes Biologiques de ChizéCNRS
  • Marc Girondot
    • Laboratoire Ecologie, Systématique et Evolution (UMR8079), Faculté des Sciences d’OrsayUniversité Paris-Sud
    • AgroParisTechCNRS
    • Département de Systématique et EvolutionMuséum National d’Histoire Naturelle de Paris
  • Matthew H. Godfrey
    • North Carolina Wildlife Resources Commission
  • Jean-Michel Guillon
    • Laboratoire Ecologie, Systématique et Evolution (UMR8079), Faculté des Sciences d’OrsayUniversité Paris-Sud
    • AgroParisTechCNRS
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 temperatureTransitional range of temperatureGlobal warmingSex ratioTurtles

Copyright information

© Springer-Verlag 2009