Temperature-Dependent Sex Determination and Contemporary Climate Change

2010 ◽  
Vol 4 (1-2) ◽  
pp. 129-140 ◽  
Author(s):  
N.J. Mitchell ◽  
F.J. Janzen
Keyword(s):  
Climate Change ◽  
Sex Determination ◽  
Temperature Dependent ◽  
Contemporary Climate

scholarly journals Unexpected resilience of species with temperature-dependent sex determination at the Cretaceous–Palaeogene boundary

2010 ◽  
Vol 7 (2) ◽  
pp. 295-298 ◽  
Author(s):  
Sherman Silber ◽  
Jonathan H. Geisler ◽  
Minjin Bolortsetseg
Keyword(s):  
Climate Change ◽  
Sex Ratio ◽  
Sex Determination ◽  
Volcanic Eruptions ◽  
Egg Laying ◽  
Molecular Clocks ◽  
Temperature Dependent ◽  
Hell Creek Formation ◽  
Male Preponderance ◽  
Genotypic Sex Determination

It has been suggested that climate change at the Cretaceous–Palaeogene (K–Pg) boundary, initiated by a bolide impact or volcanic eruptions, caused species with temperature-dependent sex determination (TSD), including dinosaurs, to go extinct because of a skewed sex ratio towards all males. To test this hypothesis, the sex-determining mechanisms (SDMs) of Cretaceous tetrapods of the Hell Creek Formation (Montana, USA) were inferred using parsimony optimizations of SDMs on a tree, including Hell Creek species and their extant relatives. Although the SDMs of non-avian dinosaurs could not be inferred, we were able to determine the SDMs of 62 species; 46 had genotypic sex determination (GSD) and 16 had TSD. The TSD hypothesis for extinctions performed poorly, predicting between 32 and 34 per cent of survivals and extinctions. Most surprisingly, of the 16 species with TSD, 14 of them survived into the Early Palaeocene. In contrast, 61 per cent of species with GSD went extinct. Possible explanations include minimal climate change at the K–Pg, or if climate change did occur, TSD species that survived had egg-laying behaviour that prevented the skewing of sex ratios, or had a sex ratio skewed towards female rather than male preponderance. Application of molecular clocks may allow the SDMs of non-avian dinosaurs to be inferred, which would be an important test of the pattern discovered here.

scholarly journals Extreme thermal fluctuations from climate change unexpectedly accelerate demographic collapse of vertebrates with temperature-dependent sex determination

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Nicole Valenzuela ◽  
Robert Literman ◽  
Jennifer L. Neuwald ◽  
Beatriz Mizoguchi ◽  
John B. Iverson ◽  
...  
Keyword(s):  
Climate Change ◽  
Sex Determination ◽  
Thermal Fluctuations ◽  
Temperature Dependent

Will all species with temperature-dependent sex determination respond the same way to climate change? A reply to Kallimanis (2010)

Oikos ◽  
2011 ◽  
Vol 120 (5) ◽  
pp. 795-799 ◽  
Author(s):  
Armando H. Escobedo-Galván ◽  
Constantino González-Salazar ◽  
Saúl López-Alcaide ◽  
V. Baruch Arroyo-Peña ◽  
Enrique Martínez-Meyer
Keyword(s):  
Climate Change ◽  
Sex Determination ◽  
Temperature Dependent

scholarly journals Female-Bias in a Long-Term Study of a Species with Temperature-Dependent Sex Determination: Monitoring Sex Ratios for Climate Change Research

PLoS ONE ◽  
2016 ◽  
Vol 11 (8) ◽  
pp. e0160911 ◽  
Author(s):  
Joanne Braun McNeill ◽  
Larisa Avens ◽  
April Goodman Hall ◽  
Lisa R. Goshe ◽  
Craig A. Harms ◽  
...  
Keyword(s):  
Climate Change ◽  
Sex Determination ◽  
Sex Ratios ◽  
Temperature Dependent ◽  
Term Study ◽  
Climate Change Research ◽  
Long Term Study ◽  
Female Bias
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