Thermal Acclimation to the Highest Natural Ambient Temperature Compromises Physiological Performance in Tadpoles of a Stream-Breeding Savanna Tree Frog
Autor(a) principal: | |
---|---|
Data de Publicação: | 2021 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3389/fphys.2021.726440 http://hdl.handle.net/11449/233720 |
Resumo: | Amphibians may be more vulnerable to climate-driven habitat modification because of their complex life cycle dependence on land and water. Considering the current rate of global warming, it is critical to identify the vulnerability of a species by assessing its potential to acclimate to warming temperatures. In many species, thermal acclimation provides a reversible physiological adjustment in response to temperature changes, conferring resilience in a changing climate. Here, we investigate the effects of temperature acclimation on the physiological performance of tadpoles of a stream-breeding savanna tree frog (Bokermannohyla ibitiguara) in relation to the thermal conditions naturally experienced in their microhabitat (range: 18.8–24.6°C). We quantified performance measures such as routine and maximum metabolic rate at different test (15, 20, 25, 30, and 34°C) and acclimation temperatures (18 and 25°C). We also measured heart rate before and after autonomic blockade with atropine and sotalol at the respective acclimation temperatures. Further, we determined the critical thermal maximum and warming tolerance (critical thermal maximum minus maximum microhabitat temperature), which were not affected by acclimation. Mass-specific routine and mass-specific maximum metabolic rate, as well as heart rate, increased with increasing test temperatures; however, acclimation elevated mass-specific routine metabolic rate while not affecting mass-specific maximum metabolic rate. Heart rate before and after the pharmacological blockade was also unaffected by acclimation. Aerobic scope in animals acclimated to 25°C was substantially reduced, suggesting that physiological performance at the highest temperatures experienced in their natural habitat is compromised. In conclusion, the data suggest that the tadpoles of B. ibitiguara, living in a thermally stable environment, have a limited capacity to physiologically adjust to the highest temperatures found in their micro-habitat, making the species more vulnerable to future climate change. |
id |
UNSP_3cbd7aed4837e93939126934dcc32c02 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/233720 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Thermal Acclimation to the Highest Natural Ambient Temperature Compromises Physiological Performance in Tadpoles of a Stream-Breeding Savanna Tree Frogaclimatationaerobic scopeamphibianautonomic blockadeclimate changecritical thermal maximumheart rateoxygen consumptionAmphibians may be more vulnerable to climate-driven habitat modification because of their complex life cycle dependence on land and water. Considering the current rate of global warming, it is critical to identify the vulnerability of a species by assessing its potential to acclimate to warming temperatures. In many species, thermal acclimation provides a reversible physiological adjustment in response to temperature changes, conferring resilience in a changing climate. Here, we investigate the effects of temperature acclimation on the physiological performance of tadpoles of a stream-breeding savanna tree frog (Bokermannohyla ibitiguara) in relation to the thermal conditions naturally experienced in their microhabitat (range: 18.8–24.6°C). We quantified performance measures such as routine and maximum metabolic rate at different test (15, 20, 25, 30, and 34°C) and acclimation temperatures (18 and 25°C). We also measured heart rate before and after autonomic blockade with atropine and sotalol at the respective acclimation temperatures. Further, we determined the critical thermal maximum and warming tolerance (critical thermal maximum minus maximum microhabitat temperature), which were not affected by acclimation. Mass-specific routine and mass-specific maximum metabolic rate, as well as heart rate, increased with increasing test temperatures; however, acclimation elevated mass-specific routine metabolic rate while not affecting mass-specific maximum metabolic rate. Heart rate before and after the pharmacological blockade was also unaffected by acclimation. Aerobic scope in animals acclimated to 25°C was substantially reduced, suggesting that physiological performance at the highest temperatures experienced in their natural habitat is compromised. In conclusion, the data suggest that the tadpoles of B. ibitiguara, living in a thermally stable environment, have a limited capacity to physiologically adjust to the highest temperatures found in their micro-habitat, making the species more vulnerable to future climate change.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Departamento de Morfologia e Fisiologia Animal Universidade Estadual Paulista Júlio de Mesquita FilhoDepartment of Physiology Institute of Biosciences University of São PauloInstitute for Marine and Antarctic Studies University of TasmaniaDepartamento de Morfologia e Fisiologia Animal Universidade Estadual Paulista Júlio de Mesquita FilhoFAPESP: 2018/01899-0FAPESP: 2019/09469-8CNPq: 407490/2018-3Universidade Estadual Paulista (UNESP)Universidade de São Paulo (USP)University of TasmaniaLonghini, Leonardo S. [UNESP]Zena, Lucas A.Polymeropoulos, Elias T.Rocha, Aline C. G. [UNESP]da Silva Leandro, Gabriela [UNESP]Prado, Cynthia P. A. [UNESP]Bícego, Kênia C. [UNESP]Gargaglioni, Luciane H. [UNESP]2022-05-01T09:47:24Z2022-05-01T09:47:24Z2021-10-08info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.3389/fphys.2021.726440Frontiers in Physiology, v. 12.1664-042Xhttp://hdl.handle.net/11449/23372010.3389/fphys.2021.7264402-s2.0-85117588631Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengFrontiers in Physiologyinfo:eu-repo/semantics/openAccess2024-06-06T18:41:18Zoai:repositorio.unesp.br:11449/233720Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:00:36.717121Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Thermal Acclimation to the Highest Natural Ambient Temperature Compromises Physiological Performance in Tadpoles of a Stream-Breeding Savanna Tree Frog |
title |
Thermal Acclimation to the Highest Natural Ambient Temperature Compromises Physiological Performance in Tadpoles of a Stream-Breeding Savanna Tree Frog |
spellingShingle |
Thermal Acclimation to the Highest Natural Ambient Temperature Compromises Physiological Performance in Tadpoles of a Stream-Breeding Savanna Tree Frog Longhini, Leonardo S. [UNESP] aclimatation aerobic scope amphibian autonomic blockade climate change critical thermal maximum heart rate oxygen consumption |
title_short |
Thermal Acclimation to the Highest Natural Ambient Temperature Compromises Physiological Performance in Tadpoles of a Stream-Breeding Savanna Tree Frog |
title_full |
Thermal Acclimation to the Highest Natural Ambient Temperature Compromises Physiological Performance in Tadpoles of a Stream-Breeding Savanna Tree Frog |
title_fullStr |
Thermal Acclimation to the Highest Natural Ambient Temperature Compromises Physiological Performance in Tadpoles of a Stream-Breeding Savanna Tree Frog |
title_full_unstemmed |
Thermal Acclimation to the Highest Natural Ambient Temperature Compromises Physiological Performance in Tadpoles of a Stream-Breeding Savanna Tree Frog |
title_sort |
Thermal Acclimation to the Highest Natural Ambient Temperature Compromises Physiological Performance in Tadpoles of a Stream-Breeding Savanna Tree Frog |
author |
Longhini, Leonardo S. [UNESP] |
author_facet |
Longhini, Leonardo S. [UNESP] Zena, Lucas A. Polymeropoulos, Elias T. Rocha, Aline C. G. [UNESP] da Silva Leandro, Gabriela [UNESP] Prado, Cynthia P. A. [UNESP] Bícego, Kênia C. [UNESP] Gargaglioni, Luciane H. [UNESP] |
author_role |
author |
author2 |
Zena, Lucas A. Polymeropoulos, Elias T. Rocha, Aline C. G. [UNESP] da Silva Leandro, Gabriela [UNESP] Prado, Cynthia P. A. [UNESP] Bícego, Kênia C. [UNESP] Gargaglioni, Luciane H. [UNESP] |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade de São Paulo (USP) University of Tasmania |
dc.contributor.author.fl_str_mv |
Longhini, Leonardo S. [UNESP] Zena, Lucas A. Polymeropoulos, Elias T. Rocha, Aline C. G. [UNESP] da Silva Leandro, Gabriela [UNESP] Prado, Cynthia P. A. [UNESP] Bícego, Kênia C. [UNESP] Gargaglioni, Luciane H. [UNESP] |
dc.subject.por.fl_str_mv |
aclimatation aerobic scope amphibian autonomic blockade climate change critical thermal maximum heart rate oxygen consumption |
topic |
aclimatation aerobic scope amphibian autonomic blockade climate change critical thermal maximum heart rate oxygen consumption |
description |
Amphibians may be more vulnerable to climate-driven habitat modification because of their complex life cycle dependence on land and water. Considering the current rate of global warming, it is critical to identify the vulnerability of a species by assessing its potential to acclimate to warming temperatures. In many species, thermal acclimation provides a reversible physiological adjustment in response to temperature changes, conferring resilience in a changing climate. Here, we investigate the effects of temperature acclimation on the physiological performance of tadpoles of a stream-breeding savanna tree frog (Bokermannohyla ibitiguara) in relation to the thermal conditions naturally experienced in their microhabitat (range: 18.8–24.6°C). We quantified performance measures such as routine and maximum metabolic rate at different test (15, 20, 25, 30, and 34°C) and acclimation temperatures (18 and 25°C). We also measured heart rate before and after autonomic blockade with atropine and sotalol at the respective acclimation temperatures. Further, we determined the critical thermal maximum and warming tolerance (critical thermal maximum minus maximum microhabitat temperature), which were not affected by acclimation. Mass-specific routine and mass-specific maximum metabolic rate, as well as heart rate, increased with increasing test temperatures; however, acclimation elevated mass-specific routine metabolic rate while not affecting mass-specific maximum metabolic rate. Heart rate before and after the pharmacological blockade was also unaffected by acclimation. Aerobic scope in animals acclimated to 25°C was substantially reduced, suggesting that physiological performance at the highest temperatures experienced in their natural habitat is compromised. In conclusion, the data suggest that the tadpoles of B. ibitiguara, living in a thermally stable environment, have a limited capacity to physiologically adjust to the highest temperatures found in their micro-habitat, making the species more vulnerable to future climate change. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-10-08 2022-05-01T09:47:24Z 2022-05-01T09:47:24Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.3389/fphys.2021.726440 Frontiers in Physiology, v. 12. 1664-042X http://hdl.handle.net/11449/233720 10.3389/fphys.2021.726440 2-s2.0-85117588631 |
url |
http://dx.doi.org/10.3389/fphys.2021.726440 http://hdl.handle.net/11449/233720 |
identifier_str_mv |
Frontiers in Physiology, v. 12. 1664-042X 10.3389/fphys.2021.726440 2-s2.0-85117588631 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Frontiers in Physiology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128445628022784 |