Literaturdatenbank
Literaturdatenbank |
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Hulin, V., Delmas, V., Girondot, M., Godfrey, M. H., & Guillon, J.-M. (2009). Temperature-dependent sex determination and global change: are some species at greater risk? Oecologia, 160, 493–506.
Added by: Sarina Wunderlich (30 Oct 2011 14:52:36 UTC) |
| Resource type: Journal Article BibTeX citation key: Hulin2009 View all bibliographic details  |
Categories: General Keywords: Chrysemys, Chrysemys picta, Clemmys, Clemmys guttata, Emydidae, Emys, Emys orbicularis, Gopherus, Gopherus polyphemus, Graptemys, Graptemys caglei, Graptemys geographica, Graptemys ouachitensis, Graptemys pseudogeographica, Malacochersus, Malacochersus tornieri, Podocnemididae, Podocnemis, Podocnemis expansa, Schildkröten = turtles + tortoises, Terrapene, Terrapene carolina, Testudinidae, Testudo, Testudo graeca, Testudo hermanni, Trachemys, Trachemys scripta, Zeitigung = incubation Creators: Delmas, Girondot, Godfrey, Guillon, Hulin Collection: Oecologia |
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| Abstract |
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Chrysemys picta Clemmys guttata Emys orbicularis Testudinidae Gopherus agassizi polyphemus Graptemys caglei ouachitensis pseudogeographica Malacochersus tornieri Podocnemis expansa unifiliis Terrapene carolina Testudo graeca hermanni Trachemys scripta 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.
Added by: Sarina Wunderlich |