Climatic stability, not average habitat temperature,determines thermal tolerance of subterranean beetles
The climatic variability hypothesis predicts the evolution of species with widethermal tolerance ranges in environments with variable temperatures, and theevolution of thermal specialists in thermally stable environments. In caves, theextent of spatial and temporal thermal variability experienced by taxadecreases with their degree of specialization to deep subterranean habitats. Weuse phylogenetic generalized least squares to model the relationship amongthermal tolerance (upper lethal limits), subterranean specialization (estimatedusing ecomorphological traits), and habitat temperature in 16 beetle species ofthe tribe Leptodirini (Leiodidae). We found a significant, negative relationshipbetween thermal tolerance and the degree of subterranean specialization. Con-versely, habitat temperature had only a marginal effect on lethal limits. Inagreement with the climatic variability hypothesis and under a climate changecontext, we show that the specialization process to live in deep subterraneanhabitats involves a reduction of upper lethal limits, but not an adjustment tohabitat temperature. Thermal variability seems to exert a higher evolutionarypressure than mean habitat temperature to configure the thermal niche of sub-terranean species. Our results provide novel insights on thermal physiology ofspecies with poor dispersal capabilities and on the evolutionary process ofadaptation to subterranean environments. We further emphasize that thepathways determining vulnerability of subterranean species to climate changegreatly depend on the degree of specialization to deep subterraneanenvironments.
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Format: | artículo biblioteca |
Language: | English |
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Ecological Society of America
2022-04
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Subjects: | Cave fauna, Climate change, Climatic variability hypothesis, Deep subterranean environment, Habitat temperature, Leiodidae, Mountain passes hypothesis, Thermal tolerance, |
Online Access: | http://hdl.handle.net/10261/266523 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100011033 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100004837 |
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dig-ibe-es-10261-2665232022-11-04T16:01:27Z Climatic stability, not average habitat temperature,determines thermal tolerance of subterranean beetles Colado, Raquel Pallarés, Susana Fresneda, Javier Mammola, Stefano Rizzo, Valeria Sánchez-Fernández, David Agencia Estatal de Investigación (España) Ministerio de Economía y Competitividad (España) Ministerio de Ciencia e Innovación (España) European Commission Cave fauna Climate change Climatic variability hypothesis Deep subterranean environment Habitat temperature Leiodidae Mountain passes hypothesis Thermal tolerance The climatic variability hypothesis predicts the evolution of species with widethermal tolerance ranges in environments with variable temperatures, and theevolution of thermal specialists in thermally stable environments. In caves, theextent of spatial and temporal thermal variability experienced by taxadecreases with their degree of specialization to deep subterranean habitats. Weuse phylogenetic generalized least squares to model the relationship amongthermal tolerance (upper lethal limits), subterranean specialization (estimatedusing ecomorphological traits), and habitat temperature in 16 beetle species ofthe tribe Leptodirini (Leiodidae). We found a significant, negative relationshipbetween thermal tolerance and the degree of subterranean specialization. Con-versely, habitat temperature had only a marginal effect on lethal limits. Inagreement with the climatic variability hypothesis and under a climate changecontext, we show that the specialization process to live in deep subterraneanhabitats involves a reduction of upper lethal limits, but not an adjustment tohabitat temperature. Thermal variability seems to exert a higher evolutionarypressure than mean habitat temperature to configure the thermal niche of sub-terranean species. Our results provide novel insights on thermal physiology ofspecies with poor dispersal capabilities and on the evolutionary process ofadaptation to subterranean environments. We further emphasize that thepathways determining vulnerability of subterranean species to climate changegreatly depend on the degree of specialization to deep subterraneanenvironments. This work was supported by the Agencia Estatal de Investigación (Spain), the Spanish Ministry of Economy and Innovation and the European Regional Development Fund (project CGL2016-76995-P). RC is funded by a predoctoral grant of the Spanish Ministry of Science and Innovation (FPI). SP and DS-F are funded by postdoctoral contracts from the Spanish Ministry of Science and Innovation (Juan de la Cierva-Formación FJC2018-035577-I and Ramón y Cajal [RYC2019-027446-I] programs, respectively). SM acknowledges support from the European Commission through Horizon 2020 Marie Skłodowska-Curie Actions (MSCA) individual fellowships (Grant no. 882221). Peer reviewed 2022-04-07T08:10:27Z 2022-04-07T08:10:27Z 2022-04 artículo http://purl.org/coar/resource_type/c_6501 Ecology - Ecological Society of America 103(4): e3629 (2022) 0012-9658 http://hdl.handle.net/10261/266523 10.1002/ecy.3629 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100011033 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100004837 en #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO// CGL2016-76995-P info:eu-repo/grantAgreement/MICINN//FJC2018-035577-I info:eu-repo/grantAgreement/MICINN//RYC2019-027446-I info:eu-repo/grantAgreement/EC/H2020/882221 https://doi.org/10.1002/ecy.3629 Sí open Ecological Society of America |
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Cave fauna Climate change Climatic variability hypothesis Deep subterranean environment Habitat temperature Leiodidae Mountain passes hypothesis Thermal tolerance Cave fauna Climate change Climatic variability hypothesis Deep subterranean environment Habitat temperature Leiodidae Mountain passes hypothesis Thermal tolerance |
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Cave fauna Climate change Climatic variability hypothesis Deep subterranean environment Habitat temperature Leiodidae Mountain passes hypothesis Thermal tolerance Cave fauna Climate change Climatic variability hypothesis Deep subterranean environment Habitat temperature Leiodidae Mountain passes hypothesis Thermal tolerance Colado, Raquel Pallarés, Susana Fresneda, Javier Mammola, Stefano Rizzo, Valeria Sánchez-Fernández, David Climatic stability, not average habitat temperature,determines thermal tolerance of subterranean beetles |
description |
The climatic variability hypothesis predicts the evolution of species with widethermal tolerance ranges in environments with variable temperatures, and theevolution of thermal specialists in thermally stable environments. In caves, theextent of spatial and temporal thermal variability experienced by taxadecreases with their degree of specialization to deep subterranean habitats. Weuse phylogenetic generalized least squares to model the relationship amongthermal tolerance (upper lethal limits), subterranean specialization (estimatedusing ecomorphological traits), and habitat temperature in 16 beetle species ofthe tribe Leptodirini (Leiodidae). We found a significant, negative relationshipbetween thermal tolerance and the degree of subterranean specialization. Con-versely, habitat temperature had only a marginal effect on lethal limits. Inagreement with the climatic variability hypothesis and under a climate changecontext, we show that the specialization process to live in deep subterraneanhabitats involves a reduction of upper lethal limits, but not an adjustment tohabitat temperature. Thermal variability seems to exert a higher evolutionarypressure than mean habitat temperature to configure the thermal niche of sub-terranean species. Our results provide novel insights on thermal physiology ofspecies with poor dispersal capabilities and on the evolutionary process ofadaptation to subterranean environments. We further emphasize that thepathways determining vulnerability of subterranean species to climate changegreatly depend on the degree of specialization to deep subterraneanenvironments. |
author2 |
Agencia Estatal de Investigación (España) |
author_facet |
Agencia Estatal de Investigación (España) Colado, Raquel Pallarés, Susana Fresneda, Javier Mammola, Stefano Rizzo, Valeria Sánchez-Fernández, David |
format |
artículo |
topic_facet |
Cave fauna Climate change Climatic variability hypothesis Deep subterranean environment Habitat temperature Leiodidae Mountain passes hypothesis Thermal tolerance |
author |
Colado, Raquel Pallarés, Susana Fresneda, Javier Mammola, Stefano Rizzo, Valeria Sánchez-Fernández, David |
author_sort |
Colado, Raquel |
title |
Climatic stability, not average habitat temperature,determines thermal tolerance of subterranean beetles |
title_short |
Climatic stability, not average habitat temperature,determines thermal tolerance of subterranean beetles |
title_full |
Climatic stability, not average habitat temperature,determines thermal tolerance of subterranean beetles |
title_fullStr |
Climatic stability, not average habitat temperature,determines thermal tolerance of subterranean beetles |
title_full_unstemmed |
Climatic stability, not average habitat temperature,determines thermal tolerance of subterranean beetles |
title_sort |
climatic stability, not average habitat temperature,determines thermal tolerance of subterranean beetles |
publisher |
Ecological Society of America |
publishDate |
2022-04 |
url |
http://hdl.handle.net/10261/266523 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100011033 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100004837 |
work_keys_str_mv |
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1777668813474496512 |