The breathing pattern and the ventilatory response to aquatic and aerial hypoxia and hypercarbia in the frog Pipa carvalhoi
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.cbpa.2012.03.020 http://hdl.handle.net/11449/2823 |
Resumo: | Anuran amphibians are known to exhibit an intermittent pattern of pulmonary ventilation and to exhibit an increased ventilatory response to hypoxia and hypercarbia. However, only a few species have been studied to date. The aquatic frog Pipa carvalhoi inhabits lakes, ponds and marshes that are rich in nutrients but low in O-2. There are no studies of the respiratory pattern of this species and its ventilation during hypoxia or hypercarbia. Accordingly, the aim of the present study was to characterize the breathing pattern and the ventilatory response to aquatic and aerial hypoxia and hypercarbia in this species. With this purpose, pulmonary ventilation (V-1) was directly measured by the pneumotachograph method during normocapnic normoxia to determine the basal respiratory pattern and during aerial and aquatic hypercarbia (5% CO2) and hypoxia (5% O-2). Our data demonstrate that P. carvalhoi exhibits a periodic breathing pattern composed of single events (single breaths) of pulmonary ventilation separated by periods of apnea. The animals had an enhanced V-1 during aerial hypoxia, but not during aquatic hypoxia. This increase was strictly the result of an increase in the breathing frequency. A pronounced increase in V-1 was observed if the animals were simultaneously exposed to aerial and aquatic hypercarbia, whereas small or no ventilatory responses were observed during separately administered aerial or aquatic hypercarbia. P. carvalhoi primarily inhabits an aquatic environment. Nevertheless, it does not respond to low O-2 levels in water, although it does so in air. The observed ventilatory responses to hypercarbia may indicate that this species is similar to other anurans in possessing central chemoreceptors. (C) 2012 Elsevier B.V. All rights reserved. |
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The breathing pattern and the ventilatory response to aquatic and aerial hypoxia and hypercarbia in the frog Pipa carvalhoiPipidaeHypercarbiaPulmonary ventilationHypoxiaAmphibianAnuran amphibians are known to exhibit an intermittent pattern of pulmonary ventilation and to exhibit an increased ventilatory response to hypoxia and hypercarbia. However, only a few species have been studied to date. The aquatic frog Pipa carvalhoi inhabits lakes, ponds and marshes that are rich in nutrients but low in O-2. There are no studies of the respiratory pattern of this species and its ventilation during hypoxia or hypercarbia. Accordingly, the aim of the present study was to characterize the breathing pattern and the ventilatory response to aquatic and aerial hypoxia and hypercarbia in this species. With this purpose, pulmonary ventilation (V-1) was directly measured by the pneumotachograph method during normocapnic normoxia to determine the basal respiratory pattern and during aerial and aquatic hypercarbia (5% CO2) and hypoxia (5% O-2). Our data demonstrate that P. carvalhoi exhibits a periodic breathing pattern composed of single events (single breaths) of pulmonary ventilation separated by periods of apnea. The animals had an enhanced V-1 during aerial hypoxia, but not during aquatic hypoxia. This increase was strictly the result of an increase in the breathing frequency. A pronounced increase in V-1 was observed if the animals were simultaneously exposed to aerial and aquatic hypercarbia, whereas small or no ventilatory responses were observed during separately administered aerial or aquatic hypercarbia. P. carvalhoi primarily inhabits an aquatic environment. Nevertheless, it does not respond to low O-2 levels in water, although it does so in air. The observed ventilatory responses to hypercarbia may indicate that this species is similar to other anurans in possessing central chemoreceptors. (C) 2012 Elsevier B.V. All rights reserved.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)National Institute of Science and Technology in Comparative Physiology (INCT-FisComp)São Paulo State Univ UNESP FCAV, Dept Anim Morphol & Physiol, Jaboticabal, SP, BrazilUniv São Paulo, Sch Med, Dept Physiol, BR-14049 Ribeirao Preto, SP, BrazilFFCL, Fac Filosofia Ciencias & Letras Ituverava, Ituverava, BrazilSão Paulo State Univ UNESP FCAV, Dept Anim Morphol & Physiol, Jaboticabal, SP, BrazilFAPESP: 08/57522-0Elsevier B.V.Universidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)FFCLFonseca, Elisa M. [UNESP]da Silva, Glauber S. F.Fernandes, MarceloGiusti, HumbertoNoronha-de-Souza, Carolina R. [UNESP]Glass, Mogens L.Bicego, Kenia C. [UNESP]Gargaglioni, Luciane H. [UNESP]2014-05-20T13:15:47Z2014-05-20T13:15:47Z2012-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article281-287application/pdfhttp://dx.doi.org/10.1016/j.cbpa.2012.03.020Comparative Biochemistry and Physiology A-molecular & Integrative Physiology. New York: Elsevier B.V., v. 162, n. 3, p. 281-287, 2012.1095-6433http://hdl.handle.net/11449/282310.1016/j.cbpa.2012.03.020WOS:000304509800017WOS000304509800017.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengComparative Biochemistry and Physiology A-molecular & Integrative Physiology2.2580,836info:eu-repo/semantics/openAccess2024-06-06T18:41:14Zoai:repositorio.unesp.br:11449/2823Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:31:10.561658Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
The breathing pattern and the ventilatory response to aquatic and aerial hypoxia and hypercarbia in the frog Pipa carvalhoi |
title |
The breathing pattern and the ventilatory response to aquatic and aerial hypoxia and hypercarbia in the frog Pipa carvalhoi |
spellingShingle |
The breathing pattern and the ventilatory response to aquatic and aerial hypoxia and hypercarbia in the frog Pipa carvalhoi Fonseca, Elisa M. [UNESP] Pipidae Hypercarbia Pulmonary ventilation Hypoxia Amphibian |
title_short |
The breathing pattern and the ventilatory response to aquatic and aerial hypoxia and hypercarbia in the frog Pipa carvalhoi |
title_full |
The breathing pattern and the ventilatory response to aquatic and aerial hypoxia and hypercarbia in the frog Pipa carvalhoi |
title_fullStr |
The breathing pattern and the ventilatory response to aquatic and aerial hypoxia and hypercarbia in the frog Pipa carvalhoi |
title_full_unstemmed |
The breathing pattern and the ventilatory response to aquatic and aerial hypoxia and hypercarbia in the frog Pipa carvalhoi |
title_sort |
The breathing pattern and the ventilatory response to aquatic and aerial hypoxia and hypercarbia in the frog Pipa carvalhoi |
author |
Fonseca, Elisa M. [UNESP] |
author_facet |
Fonseca, Elisa M. [UNESP] da Silva, Glauber S. F. Fernandes, Marcelo Giusti, Humberto Noronha-de-Souza, Carolina R. [UNESP] Glass, Mogens L. Bicego, Kenia C. [UNESP] Gargaglioni, Luciane H. [UNESP] |
author_role |
author |
author2 |
da Silva, Glauber S. F. Fernandes, Marcelo Giusti, Humberto Noronha-de-Souza, Carolina R. [UNESP] Glass, Mogens L. Bicego, Kenia 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) FFCL |
dc.contributor.author.fl_str_mv |
Fonseca, Elisa M. [UNESP] da Silva, Glauber S. F. Fernandes, Marcelo Giusti, Humberto Noronha-de-Souza, Carolina R. [UNESP] Glass, Mogens L. Bicego, Kenia C. [UNESP] Gargaglioni, Luciane H. [UNESP] |
dc.subject.por.fl_str_mv |
Pipidae Hypercarbia Pulmonary ventilation Hypoxia Amphibian |
topic |
Pipidae Hypercarbia Pulmonary ventilation Hypoxia Amphibian |
description |
Anuran amphibians are known to exhibit an intermittent pattern of pulmonary ventilation and to exhibit an increased ventilatory response to hypoxia and hypercarbia. However, only a few species have been studied to date. The aquatic frog Pipa carvalhoi inhabits lakes, ponds and marshes that are rich in nutrients but low in O-2. There are no studies of the respiratory pattern of this species and its ventilation during hypoxia or hypercarbia. Accordingly, the aim of the present study was to characterize the breathing pattern and the ventilatory response to aquatic and aerial hypoxia and hypercarbia in this species. With this purpose, pulmonary ventilation (V-1) was directly measured by the pneumotachograph method during normocapnic normoxia to determine the basal respiratory pattern and during aerial and aquatic hypercarbia (5% CO2) and hypoxia (5% O-2). Our data demonstrate that P. carvalhoi exhibits a periodic breathing pattern composed of single events (single breaths) of pulmonary ventilation separated by periods of apnea. The animals had an enhanced V-1 during aerial hypoxia, but not during aquatic hypoxia. This increase was strictly the result of an increase in the breathing frequency. A pronounced increase in V-1 was observed if the animals were simultaneously exposed to aerial and aquatic hypercarbia, whereas small or no ventilatory responses were observed during separately administered aerial or aquatic hypercarbia. P. carvalhoi primarily inhabits an aquatic environment. Nevertheless, it does not respond to low O-2 levels in water, although it does so in air. The observed ventilatory responses to hypercarbia may indicate that this species is similar to other anurans in possessing central chemoreceptors. (C) 2012 Elsevier B.V. All rights reserved. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-07-01 2014-05-20T13:15:47Z 2014-05-20T13:15:47Z |
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/10.1016/j.cbpa.2012.03.020 Comparative Biochemistry and Physiology A-molecular & Integrative Physiology. New York: Elsevier B.V., v. 162, n. 3, p. 281-287, 2012. 1095-6433 http://hdl.handle.net/11449/2823 10.1016/j.cbpa.2012.03.020 WOS:000304509800017 WOS000304509800017.pdf |
url |
http://dx.doi.org/10.1016/j.cbpa.2012.03.020 http://hdl.handle.net/11449/2823 |
identifier_str_mv |
Comparative Biochemistry and Physiology A-molecular & Integrative Physiology. New York: Elsevier B.V., v. 162, n. 3, p. 281-287, 2012. 1095-6433 10.1016/j.cbpa.2012.03.020 WOS:000304509800017 WOS000304509800017.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Comparative Biochemistry and Physiology A-molecular & Integrative Physiology 2.258 0,836 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
281-287 application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier B.V. |
publisher.none.fl_str_mv |
Elsevier B.V. |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1808128372835876864 |