Are lizards sensitive to anomalous seasonal temperatures? long-term thermobiological variability in a subtropical species
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/267167 |
Resumo: | Alterations in thermal niches have been widely associated with the Anthropocene erosion of reptiles’ diversity. They entail potential physiological constraints for organisms’ perfor- mance, which can lead to activity restrictions and impact fitness and demography. Reptiles are ectotherms which rely on seasonal periodicity to maximize the performance of biological functions. Despite it, the ecological implications of shifts in local temperatures are barely explored at the seasonal scale. This study aims to assess how changes in air temperature and substrate temperature affect the activity, body temperature (Tb) and thermoregulation patterns of the sand lizard, Liolaemus arambarensis (an endangered, microendemic spe- cies from southern Brazil), throughout a four-year period. Field surveys were conducted monthly on a restricted population in a sand-dune habitat. The annual fluctuations of the seasonal temperatures led to significant changes in the activity and Tb of L. arambarensis and shaped thermoregulation trends, suggesting biological plasticity as a key factor in the face of such variability. Lizards tended to maintain seasonal Tb in mild and harsh seasons through increased warming/cooling efforts. Anomalous winter conditions seemed especially critical for individual performance due to their apparent high impact favouring/constraining activity. Activity and thermoregulation were inhibited in frigid winters, probably due to a vul- nerable physiology to intense cold spells determined by higher preferred body temperatures than Tb. Our results warn of a complex sensitivity in lizards to anomalous seasonal tempera- tures, which are potentially enhanced by climate change. The current work highlights the importance of multiannual biomonitoring to disentangle long-term responses in the thermal biology of reptiles and, thereby, to integrate conservation needs in the scope of global change. |
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Liz, André VicenteSantos, Vinícius Inacio Monteiro dosRibeiro, Talita MengerRodrigues, Murilo GuimarãesVerrastro Viñas, Laura2023-11-17T03:23:43Z20191932-6203http://hdl.handle.net/10183/267167001175695Alterations in thermal niches have been widely associated with the Anthropocene erosion of reptiles’ diversity. They entail potential physiological constraints for organisms’ perfor- mance, which can lead to activity restrictions and impact fitness and demography. Reptiles are ectotherms which rely on seasonal periodicity to maximize the performance of biological functions. Despite it, the ecological implications of shifts in local temperatures are barely explored at the seasonal scale. This study aims to assess how changes in air temperature and substrate temperature affect the activity, body temperature (Tb) and thermoregulation patterns of the sand lizard, Liolaemus arambarensis (an endangered, microendemic spe- cies from southern Brazil), throughout a four-year period. Field surveys were conducted monthly on a restricted population in a sand-dune habitat. The annual fluctuations of the seasonal temperatures led to significant changes in the activity and Tb of L. arambarensis and shaped thermoregulation trends, suggesting biological plasticity as a key factor in the face of such variability. Lizards tended to maintain seasonal Tb in mild and harsh seasons through increased warming/cooling efforts. Anomalous winter conditions seemed especially critical for individual performance due to their apparent high impact favouring/constraining activity. Activity and thermoregulation were inhibited in frigid winters, probably due to a vul- nerable physiology to intense cold spells determined by higher preferred body temperatures than Tb. Our results warn of a complex sensitivity in lizards to anomalous seasonal tempera- tures, which are potentially enhanced by climate change. The current work highlights the importance of multiannual biomonitoring to disentangle long-term responses in the thermal biology of reptiles and, thereby, to integrate conservation needs in the scope of global change.application/pdfengPlos One. San Francisco. Vol. 14, no. 12 (Dec. 2019), e0226399, 16 p.RépteisTermorregulaçãoAre lizards sensitive to anomalous seasonal temperatures? long-term thermobiological variability in a subtropical speciesEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001175695.pdf.txt001175695.pdf.txtExtracted Texttext/plain58695http://www.lume.ufrgs.br/bitstream/10183/267167/2/001175695.pdf.txt6031de642ee3abafd25e4bf60bdf6357MD52ORIGINAL001175695.pdfTexto completo (inglês)application/pdf1768343http://www.lume.ufrgs.br/bitstream/10183/267167/1/001175695.pdfb6026dc1e2c12fb5bc3c82fd54b49ccbMD5110183/2671672023-11-18 04:25:54.05031oai:www.lume.ufrgs.br:10183/267167Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-11-18T06:25:54Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Are lizards sensitive to anomalous seasonal temperatures? long-term thermobiological variability in a subtropical species |
title |
Are lizards sensitive to anomalous seasonal temperatures? long-term thermobiological variability in a subtropical species |
spellingShingle |
Are lizards sensitive to anomalous seasonal temperatures? long-term thermobiological variability in a subtropical species Liz, André Vicente Répteis Termorregulação |
title_short |
Are lizards sensitive to anomalous seasonal temperatures? long-term thermobiological variability in a subtropical species |
title_full |
Are lizards sensitive to anomalous seasonal temperatures? long-term thermobiological variability in a subtropical species |
title_fullStr |
Are lizards sensitive to anomalous seasonal temperatures? long-term thermobiological variability in a subtropical species |
title_full_unstemmed |
Are lizards sensitive to anomalous seasonal temperatures? long-term thermobiological variability in a subtropical species |
title_sort |
Are lizards sensitive to anomalous seasonal temperatures? long-term thermobiological variability in a subtropical species |
author |
Liz, André Vicente |
author_facet |
Liz, André Vicente Santos, Vinícius Inacio Monteiro dos Ribeiro, Talita Menger Rodrigues, Murilo Guimarães Verrastro Viñas, Laura |
author_role |
author |
author2 |
Santos, Vinícius Inacio Monteiro dos Ribeiro, Talita Menger Rodrigues, Murilo Guimarães Verrastro Viñas, Laura |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Liz, André Vicente Santos, Vinícius Inacio Monteiro dos Ribeiro, Talita Menger Rodrigues, Murilo Guimarães Verrastro Viñas, Laura |
dc.subject.por.fl_str_mv |
Répteis Termorregulação |
topic |
Répteis Termorregulação |
description |
Alterations in thermal niches have been widely associated with the Anthropocene erosion of reptiles’ diversity. They entail potential physiological constraints for organisms’ perfor- mance, which can lead to activity restrictions and impact fitness and demography. Reptiles are ectotherms which rely on seasonal periodicity to maximize the performance of biological functions. Despite it, the ecological implications of shifts in local temperatures are barely explored at the seasonal scale. This study aims to assess how changes in air temperature and substrate temperature affect the activity, body temperature (Tb) and thermoregulation patterns of the sand lizard, Liolaemus arambarensis (an endangered, microendemic spe- cies from southern Brazil), throughout a four-year period. Field surveys were conducted monthly on a restricted population in a sand-dune habitat. The annual fluctuations of the seasonal temperatures led to significant changes in the activity and Tb of L. arambarensis and shaped thermoregulation trends, suggesting biological plasticity as a key factor in the face of such variability. Lizards tended to maintain seasonal Tb in mild and harsh seasons through increased warming/cooling efforts. Anomalous winter conditions seemed especially critical for individual performance due to their apparent high impact favouring/constraining activity. Activity and thermoregulation were inhibited in frigid winters, probably due to a vul- nerable physiology to intense cold spells determined by higher preferred body temperatures than Tb. Our results warn of a complex sensitivity in lizards to anomalous seasonal tempera- tures, which are potentially enhanced by climate change. The current work highlights the importance of multiannual biomonitoring to disentangle long-term responses in the thermal biology of reptiles and, thereby, to integrate conservation needs in the scope of global change. |
publishDate |
2019 |
dc.date.issued.fl_str_mv |
2019 |
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2023-11-17T03:23:43Z |
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http://hdl.handle.net/10183/267167 |
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eng |
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Plos One. San Francisco. Vol. 14, no. 12 (Dec. 2019), e0226399, 16 p. |
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