When spring becomes summer: global warming modifies seasonal patterns of thermoregulatory behaviour in a heliothermic lizard

In heliothermic lizards, thermoregulatory strategies differ seasonally: in spring, activity is shorter, with frequent shuttling between sun and shade; in summer, activity starts earlier, with more shade-seeking at midday. We hypothesized that elevated spring temperatures caused by global warming mig...

ver descrição completa

Detalhes bibliográficos
Autores: Díaz González-Serrano, José Augusto, Llanos Garrido, Alejandro
Formato: artículo
Fecha de publicación:2025
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/124928
Acesso em linha:https://hdl.handle.net/20.500.14352/124928
Access Level:acceso abierto
Palavra-chave:598.112
591.1
591,5
551.588.7
Activity
Climate change
Patch selection
Seasonality
Shuttling
Thermal preferences
Thermoregulatory accuracy
Zoología
Reptiles
Fisiología animal (Biología)
Ecología (Biología)
2401 Biología Animal (Zoología)
2401.16 Herpetología
2401.13 Fisiología Animal
2401.06 Ecología Animal
2502 Climatología
id ES_896711f7f829f1bc5cd826acb8e28e9c
oai_identifier_str oai:docta.ucm.es:20.500.14352/124928
network_acronym_str ES
network_name_str España
repository_id_str
spelling When spring becomes summer: global warming modifies seasonal patterns of thermoregulatory behaviour in a heliothermic lizardDíaz González-Serrano, José AugustoLlanos Garrido, Alejandro598.112591.1591,5551.588.7ActivityClimate changePatch selectionSeasonalityShuttlingThermal preferencesThermoregulatory accuracyZoologíaReptilesFisiología animal (Biología)Ecología (Biología)2401 Biología Animal (Zoología)2401.16 Herpetología2401.13 Fisiología Animal2401.06 Ecología Animal2502 ClimatologíaIn heliothermic lizards, thermoregulatory strategies differ seasonally: in spring, activity is shorter, with frequent shuttling between sun and shade; in summer, activity starts earlier, with more shade-seeking at midday. We hypothesized that elevated spring temperatures caused by global warming might elicit ‘summer-like’ behaviours earlier in the season. To test this hypothesis, we compared data collected for our model species, the lacertid lizard Psammodromus algirus, in May 2022 –a post-warming spring– with identical measurements from May and July 1997 in the same Mediterranean open forest. Preferred temperatures measured in a laboratory thermal gradient (Tsel) were higher in May 2022 than in May 1997, approaching July 1997 values. Field body temperatures in May 2022 were also higher, less variable (higher precision), and closer to Tsel (higher accuracy) than in May 1997; thermoregulatory effectiveness (the extent to which body temperatures are closer to Tsel than are operative temperatures) was likewise greater in May 2022. For all these variables, post-hoc tests revealed significant differences between May 2022 and May 1997, but not between May 2022 and July 1997. Activity began 1 h later in May 1997 compared to the other periods. Microhabitat use in May 2022 (full sun, filtered sun, full shade) closely resembled July 1997, but differed markedly from May 1997, when patch selection contributed least to thermoregulation. These findings suggest that hotter spring conditions under climate warming can enhance thermoregulatory accuracy, precision, and effectiveness to previously unsurpassed levels, provided that shaded microhabitats remain thermally suitable (i.e., below the upper limit of Tsel).ElsevierUniversidad Complutense de Madrid20252025-10-0120252025-10-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/124928reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)InglésengMinisterio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 Not available PID2023-148774NA-I00open accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/1249282026-06-02T12:44:21Z
dc.title.none.fl_str_mv When spring becomes summer: global warming modifies seasonal patterns of thermoregulatory behaviour in a heliothermic lizard
title When spring becomes summer: global warming modifies seasonal patterns of thermoregulatory behaviour in a heliothermic lizard
spellingShingle When spring becomes summer: global warming modifies seasonal patterns of thermoregulatory behaviour in a heliothermic lizard
Díaz González-Serrano, José Augusto
598.112
591.1
591,5
551.588.7
Activity
Climate change
Patch selection
Seasonality
Shuttling
Thermal preferences
Thermoregulatory accuracy
Zoología
Reptiles
Fisiología animal (Biología)
Ecología (Biología)
2401 Biología Animal (Zoología)
2401.16 Herpetología
2401.13 Fisiología Animal
2401.06 Ecología Animal
2502 Climatología
title_short When spring becomes summer: global warming modifies seasonal patterns of thermoregulatory behaviour in a heliothermic lizard
title_full When spring becomes summer: global warming modifies seasonal patterns of thermoregulatory behaviour in a heliothermic lizard
title_fullStr When spring becomes summer: global warming modifies seasonal patterns of thermoregulatory behaviour in a heliothermic lizard
title_full_unstemmed When spring becomes summer: global warming modifies seasonal patterns of thermoregulatory behaviour in a heliothermic lizard
title_sort When spring becomes summer: global warming modifies seasonal patterns of thermoregulatory behaviour in a heliothermic lizard
dc.creator.none.fl_str_mv Díaz González-Serrano, José Augusto
Llanos Garrido, Alejandro
author Díaz González-Serrano, José Augusto
author_facet Díaz González-Serrano, José Augusto
Llanos Garrido, Alejandro
author_role author
author2 Llanos Garrido, Alejandro
author2_role author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 598.112
591.1
591,5
551.588.7
Activity
Climate change
Patch selection
Seasonality
Shuttling
Thermal preferences
Thermoregulatory accuracy
Zoología
Reptiles
Fisiología animal (Biología)
Ecología (Biología)
2401 Biología Animal (Zoología)
2401.16 Herpetología
2401.13 Fisiología Animal
2401.06 Ecología Animal
2502 Climatología
topic 598.112
591.1
591,5
551.588.7
Activity
Climate change
Patch selection
Seasonality
Shuttling
Thermal preferences
Thermoregulatory accuracy
Zoología
Reptiles
Fisiología animal (Biología)
Ecología (Biología)
2401 Biología Animal (Zoología)
2401.16 Herpetología
2401.13 Fisiología Animal
2401.06 Ecología Animal
2502 Climatología
description In heliothermic lizards, thermoregulatory strategies differ seasonally: in spring, activity is shorter, with frequent shuttling between sun and shade; in summer, activity starts earlier, with more shade-seeking at midday. We hypothesized that elevated spring temperatures caused by global warming might elicit ‘summer-like’ behaviours earlier in the season. To test this hypothesis, we compared data collected for our model species, the lacertid lizard Psammodromus algirus, in May 2022 –a post-warming spring– with identical measurements from May and July 1997 in the same Mediterranean open forest. Preferred temperatures measured in a laboratory thermal gradient (Tsel) were higher in May 2022 than in May 1997, approaching July 1997 values. Field body temperatures in May 2022 were also higher, less variable (higher precision), and closer to Tsel (higher accuracy) than in May 1997; thermoregulatory effectiveness (the extent to which body temperatures are closer to Tsel than are operative temperatures) was likewise greater in May 2022. For all these variables, post-hoc tests revealed significant differences between May 2022 and May 1997, but not between May 2022 and July 1997. Activity began 1 h later in May 1997 compared to the other periods. Microhabitat use in May 2022 (full sun, filtered sun, full shade) closely resembled July 1997, but differed markedly from May 1997, when patch selection contributed least to thermoregulation. These findings suggest that hotter spring conditions under climate warming can enhance thermoregulatory accuracy, precision, and effectiveness to previously unsurpassed levels, provided that shaded microhabitats remain thermally suitable (i.e., below the upper limit of Tsel).
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-10-01
2025
2025-10-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/124928
url https://hdl.handle.net/20.500.14352/124928
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 Not available PID2023-148774NA-I00
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869412623708061696
score 15.223283

Registos relacionados