20.500.12556/DiRROS-19253 Functional responses in a lizard along a 3.5-km altitudinal gradient Aim: Physiological and metabolic performance are key mediators of the functional response of species to environmental change. Few environments offer such a multifaceted array of stressors as high-altitude habitats, which differ markedly in temperature, water availability, UV radiation and oxygen pressure compared to low-altitude habitats. Species that inhabit large altitudinal gradients are thus excellent models to study how organisms respond to environmental variation. Location: Tenerife island, Canary Islands archipelago (Spain). Taxon: Tenerife lizard (Gallotia galloti, Lacertidae). Methods: We integrated data on age structure, thermal and hydric regulatory behaviour and four metabolic and stress-related biomarkers for an insular lizard that inhabits an extreme altitudinal range (sea level to 3700 m a.s.l.), to understand how an ectotherms' age, ecophysiology and metabolism can be affected by extreme environmental variation. Results: We found marked differences in metabolic stress markers associated with altitude (particularly in the abundance of carbonyl metabolites and relative telomere length), but without a linear pattern along the altitudinal cline. Contrary to expectations, longer telomeres and lower carbonyl content were detected at the highest altitude, suggesting reduced stress in these populations. Evaporative water loss differed between populations but did not follow a linear altitudinal gradient. Lizard age structure or thermal physiological performance did not markedly change across different altitudes. Mixed signals in life-history and thermal ecology across populations and altitude suggest complex responses to variable conditions across altitude in this species. Main Conclusions: Our integrative study of multiple functional traits demonstrated that adaptation to highly divergent environmental conditions in this lizard is potentially linked to an interplay between plasticity and local adaptation variably associated with different functional traits. ecophysiology evaporative water loss metabolic activity oxidative stress preferred temperatures relative telomere length skeletochronology lizard ekofiziologija izguba vode metabolna aktivnost oksidativni stres preferenčna temperatura relativna dolžina telomer skeletokronologija kuščarji true false true Angleški jezik Slovenski jezik Neznano 2024-07-12 03:37:57 2024-07-12 11:42:32 2024-07-13 03:49:21 0000-00-00 00:00:00 2023 0 0 Soavtorji: Rodrigo Megía-Palma, Tatjana Simčič, Miha Krofel, Fabio Maria Guarino, Catarina Pinho, Anamarija Žagar, Miguel A. Carretero; Nasl. z nasl. zaslona; Opis vira z dne 10. 11. 2023; str. 2042-2056 iss. 12 Vol. 50 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2023-09-09 59 1365-2699 10.1111/jbi.14711 164393731 https://repozitorij.uni-lj.si/IzpisGradiva.php?id=150469 1 5e018c2c-3fef-11ef-b487-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=26512 https://onlinelibrary.wiley.com/doi/10.1111/jbi.14711 1 5e0681bc-3fef-11ef-b487-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=26513 https://doi.org/10.1111/jbi.14711 1 5dfd05ff-3fef-11ef-b487-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=26511 RAZ_Guerra_Seren_Nina_2023.pdf RAZ_Guerra_Seren_Nina_2023.pdf 1 E00793542EA0CF14A2415644017816FA 0f23b9fcb00ba76b853e70b2df7e5acb77af0c33ab5089dfc431a91ae770c8a4 a8385c83-4034-11ef-b487-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=26580 Nacionalni inštitut za biologijo 0 0 0