| geographic variation and acclimation effects on thermoregulation behavior in the widespread lizard liolaemus pictus. | populations at the warm range margins of the species distribution may be at the greatest risks of extinction from global warming unless they can tolerate extreme environmental conditions. yet, some studies suggest that the thermal behavior of some lizard species is evolutionarily rigid. during two successive years, we compared the thermal biology of two populations of liolaemus pictus living at the northern (warmer) and one population living at the southern (colder) range limits, thus spanning a ... | 2017 | 28010818 |
| vulnerability to climate warming of liolaemus pictus (squamata, liolaemidae), a lizard from the cold temperate climate in patagonia, argentina. | the vulnerability of populations and species to global warming depends not only on the environmental temperatures, but also on the behavioral and physiological abilities to respond to these changes. in this sense, the knowledge of an organism's sensitivity to temperature variation is essential to predict potential responses to climate warming. in particular, it is interesting to know how close species are to their thermal limits in nature and whether physiological plasticity is a potential short ... | 2016 | 26679700 |
| lizards on ice: evidence for multiple refugia in liolaemus pictus (liolaemidae) during the last glacial maximum in the southern andean beech forests. | historical climate changes and orogenesis are two important factors that have shaped intraspecific biodiversity patterns worldwide. although southern south america has experienced such complex events, there is a paucity of studies examining the effects on intraspecific diversification in this part of the world. liolaemus pictus is the southernmost distributed lizard in the chilean temperate forest, whose genetic structure has likely been influenced by pleistocene glaciations. we conducted a phyl ... | 2012 | 23209552 |
| stable isotopes document mainland-island divergence in resource use without concomitant physiological changes in the lizard liolaemus pictus. | shifts in feeding ecology are believed to promote island-mainland divergence. the lizard liolaemus pictus has several different subspecies on chilean islands and mainland. these subspecies inhabit contrastingly different habitats both in different islands and mainland, which suggests the potential for habitat related dietary variation. we investigated the dietary habits of l. pictus by both stomach content analyses and by nitrogen stable isotope analyses (delta(15)n), which we used as a proxy va ... | 2010 | 20172042 |
| microhabitat shifts of lizards under different contexts of sympatry: a case study with south american liolaemus. | the iguanid lizard liolaemus tenuis is shown to be a rock and trunk dweller (apparently preferring perches between 0-30 cm height) in a central chilean locality where it coexists with a single ground-dwelling congener. in its southern distributional ranges l. tenuis is sympatric with another tree-dweller, l. pictus. habitat shift is demonstrated in this latter case by l. tenuis concentrating on tree trunks, and at modal heights 30-60 cm. liolaemus pictus occupies lower (apparently more favorable ... | 1988 | 28312409 |