In support of hyperoxia representing a constraint, we found that lizards transplanted to the novel oxygen environment of low elevation exhibited decreased thermal preferences and that the thermal performance curve for sprint speed shifted, resulting in lower performance at high body temperatures. While the effects of hypoxia on thermal physiology are well-explored, few studies have examined the effects of hyperoxia in an ecological context. Our study suggests that high-elevation specialists may be hindered in such novel oxygen environments and thus constrained in their capacity for downslope migration.  Leer más.

In the common lizard (Zootoca vivipara), females exhibit three colour morphs: yellow (Y-females), orange (O-females) and mixed (mixture of yellow and orange, M-females). Zootoca vivipara is also infested with an ectoparasite (Ophionyssus mites).  Leer más.

This model posits that telomere dynamics should represent a critical and promising molecular biomarker of population extirpation as well as a way to test the in situ efficiency of conservation decisions. Leer más.

En els darrers quatre anys, els científics que estudien les tortugues marines en unes illes de Florida només han trobat femelles, ni un sol mascle. I la culpa és de les elevades temperatures. Leer más.