| Texto completo | |
| Autor(es): |
Camacho, Agustin
;
Brunes, Tuliana O.
;
Rodrigues, Miguel Trefaut
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PLoS One; v. 18, n. 11, p. 17-pg., 2023-11-01. |
| Resumo | |
High temperatures and low water availability often strike organisms concomitantly. Observing how organisms behaviorally thermohydroregulate may help us to better understand their climatic vulnerability. This is especially important for tropical forest lizards, species that are purportedly under greater climatic risk. Here, we observed the influence of hydration level on the Voluntary Thermal Maximum (VTmax) in two small Amazonian lizard species: Loxopholis ferreirai (semiaquatic and scansorial) and Loxopholis percarinatum (leaf litter parthenogenetic dweller), accounting for several potential confounding factors (handling, body mass, starting temperature and heating rate). Next, we used two modeling approaches (simple mapping of thermal margins and NicheMapR) to compare the effects of dehydration, decrease in precipitation, ability to burrow, and tree cover availability, on geographic models of climatic vulnerability. We found that VTmax decreased with dehydration, starting temperature, and heating rates in both species. The two modeling approaches showed that dehydration may alter the expected intensity, extent, and duration of perceived thermal risk across the Amazon basin for these forest lizards. Based on our results and previous studies, we identify new evidence needed to better understand thermohydroregulation and to model the geography of climatic risk using the VTmax. (AU) | |
| Processo FAPESP: | 11/50146-6 - Filogeografia comparada, filogenia, modelagem paleoclimática e taxonomia de répteis e anfíbios neotropicais |
| Beneficiário: | Miguel Trefaut Urbano Rodrigues |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa BIOTA - Temático |
| Processo FAPESP: | 16/03146-4 - Revelando relações geográficas, ecológicas e evolutivas de um complexo Neotropical de espécies de lagartos unissexuais do gênero Leposoma (Squamata: Gymnophthalmidae) por meio de Modelos de Nicho Ecológico |
| Beneficiário: | Tuliana Oliveira Brunes |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |