The effects of dissolved organic carbon on the reflex ventilatory responses of the neotropical teleost (Colossoma macropomum) to hypoxia or hypercapnia
Autor(a) principal: | |
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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/10.1016/j.chemosphere.2021.130314 http://hdl.handle.net/11449/206126 |
Resumo: | The tambaqui (Colossoma macropomum), migrates annually between whitewater and blackwater rivers of the Amazon. Unlike the whitewater, blackwater is characterized by higher levels of dissolved organic carbon (DOC), including humic acids (HA). Because humic substances impair sensory processes, the current study tested the hypothesis that O2 and/or CO2 chemoreception is impeded in blackwater owing to the presence of HA. Thus, the ventilatory responses of tambaqui to hypoxia or hypercapnia were assessed in well water transported from Manaus, local blackwater, and in well water containing HA either extracted from Rio Negro water or obtained commercially (Sigma Aldrich; SA). In well water, tambaqui exhibited typical hyperventilatory responses to hypoxia or hypercapnia. These responses were prevented by simultaneously exposing fish to SA HA (20 mg l−1). The negative effects of SA HA on ventilation were prevented when natural DOC (30 mg l−1; extracted from Rio Negro water after first removing the endogenous HA fraction) was added concurrently, indicating a protective effect of this non-humic acid DOC fraction. The hyperventilatory responses were unaffected during acute exposure or after acclimation of fish to Rio Negro water. HA extracted from Rio Negro water did not impair the hyperventilatory responses to hypoxia or hypercapnia. This study, while demonstrating a negative effect of SA HA derived from peat (coal) on the control of breathing in tambaqui, failed to reveal any detrimental consequences of HA (derived from the decomposition of a variety of lignin-rich plants) naturally occurring in the blackwaters of the Rio Negro. |
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The effects of dissolved organic carbon on the reflex ventilatory responses of the neotropical teleost (Colossoma macropomum) to hypoxia or hypercapniaBlackwaterChemoreceptionControl of breathingFishHumic acidsTambaqui (cachama)The tambaqui (Colossoma macropomum), migrates annually between whitewater and blackwater rivers of the Amazon. Unlike the whitewater, blackwater is characterized by higher levels of dissolved organic carbon (DOC), including humic acids (HA). Because humic substances impair sensory processes, the current study tested the hypothesis that O2 and/or CO2 chemoreception is impeded in blackwater owing to the presence of HA. Thus, the ventilatory responses of tambaqui to hypoxia or hypercapnia were assessed in well water transported from Manaus, local blackwater, and in well water containing HA either extracted from Rio Negro water or obtained commercially (Sigma Aldrich; SA). In well water, tambaqui exhibited typical hyperventilatory responses to hypoxia or hypercapnia. These responses were prevented by simultaneously exposing fish to SA HA (20 mg l−1). The negative effects of SA HA on ventilation were prevented when natural DOC (30 mg l−1; extracted from Rio Negro water after first removing the endogenous HA fraction) was added concurrently, indicating a protective effect of this non-humic acid DOC fraction. The hyperventilatory responses were unaffected during acute exposure or after acclimation of fish to Rio Negro water. HA extracted from Rio Negro water did not impair the hyperventilatory responses to hypoxia or hypercapnia. This study, while demonstrating a negative effect of SA HA derived from peat (coal) on the control of breathing in tambaqui, failed to reveal any detrimental consequences of HA (derived from the decomposition of a variety of lignin-rich plants) naturally occurring in the blackwaters of the Rio Negro.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado do AmazonasConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Natural Sciences and Engineering Research Council of CanadaDepartment of Biology University of Ottawa, 30 Marie Curie DriveLaboratory of Ecophysiology and Molecular Evolution Instituto Nacional de Pesquisas da Amazônia (INPA)Department of Zoology University of British ColumbiaDepartment of Biology McMaster UniversityBiosciences Institute São Paulo State University - UNESP Coastal CampusBiosciences Institute São Paulo State University - UNESP Coastal CampusCAPES: 001Fundação de Amparo à Pesquisa do Estado do Amazonas: 062.01187/2017CNPq: 401303/2014–4CNPq: 465540/2014–7Natural Sciences and Engineering Research Council of Canada: RGPIN-2017-03843Natural Sciences and Engineering Research Council of Canada: RGPIN-2017-05487Natural Sciences and Engineering Research Council of Canada: RGPIN-217440-2012Natural Sciences and Engineering Research Council of Canada: RGPIN/473–2012University of OttawaInstituto Nacional de Pesquisas da Amazônia (INPA)University of British ColumbiaMcMaster UniversityUniversidade Estadual Paulista (Unesp)Perry, Steve F.Gilmour, Kathleen M.Duarte, Rafael M. [UNESP]Wood, Chris M.Almeida-Val, Vera M.F.Val, Adalberto L.2021-06-25T10:27:01Z2021-06-25T10:27:01Z2021-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.chemosphere.2021.130314Chemosphere, v. 277.1879-12980045-6535http://hdl.handle.net/11449/20612610.1016/j.chemosphere.2021.1303142-s2.0-85103429180Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengChemosphereinfo:eu-repo/semantics/openAccess2021-10-22T21:03:14Zoai:repositorio.unesp.br:11449/206126Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-22T21:03:14Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
The effects of dissolved organic carbon on the reflex ventilatory responses of the neotropical teleost (Colossoma macropomum) to hypoxia or hypercapnia |
title |
The effects of dissolved organic carbon on the reflex ventilatory responses of the neotropical teleost (Colossoma macropomum) to hypoxia or hypercapnia |
spellingShingle |
The effects of dissolved organic carbon on the reflex ventilatory responses of the neotropical teleost (Colossoma macropomum) to hypoxia or hypercapnia Perry, Steve F. Blackwater Chemoreception Control of breathing Fish Humic acids Tambaqui (cachama) |
title_short |
The effects of dissolved organic carbon on the reflex ventilatory responses of the neotropical teleost (Colossoma macropomum) to hypoxia or hypercapnia |
title_full |
The effects of dissolved organic carbon on the reflex ventilatory responses of the neotropical teleost (Colossoma macropomum) to hypoxia or hypercapnia |
title_fullStr |
The effects of dissolved organic carbon on the reflex ventilatory responses of the neotropical teleost (Colossoma macropomum) to hypoxia or hypercapnia |
title_full_unstemmed |
The effects of dissolved organic carbon on the reflex ventilatory responses of the neotropical teleost (Colossoma macropomum) to hypoxia or hypercapnia |
title_sort |
The effects of dissolved organic carbon on the reflex ventilatory responses of the neotropical teleost (Colossoma macropomum) to hypoxia or hypercapnia |
author |
Perry, Steve F. |
author_facet |
Perry, Steve F. Gilmour, Kathleen M. Duarte, Rafael M. [UNESP] Wood, Chris M. Almeida-Val, Vera M.F. Val, Adalberto L. |
author_role |
author |
author2 |
Gilmour, Kathleen M. Duarte, Rafael M. [UNESP] Wood, Chris M. Almeida-Val, Vera M.F. Val, Adalberto L. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
University of Ottawa Instituto Nacional de Pesquisas da Amazônia (INPA) University of British Columbia McMaster University Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Perry, Steve F. Gilmour, Kathleen M. Duarte, Rafael M. [UNESP] Wood, Chris M. Almeida-Val, Vera M.F. Val, Adalberto L. |
dc.subject.por.fl_str_mv |
Blackwater Chemoreception Control of breathing Fish Humic acids Tambaqui (cachama) |
topic |
Blackwater Chemoreception Control of breathing Fish Humic acids Tambaqui (cachama) |
description |
The tambaqui (Colossoma macropomum), migrates annually between whitewater and blackwater rivers of the Amazon. Unlike the whitewater, blackwater is characterized by higher levels of dissolved organic carbon (DOC), including humic acids (HA). Because humic substances impair sensory processes, the current study tested the hypothesis that O2 and/or CO2 chemoreception is impeded in blackwater owing to the presence of HA. Thus, the ventilatory responses of tambaqui to hypoxia or hypercapnia were assessed in well water transported from Manaus, local blackwater, and in well water containing HA either extracted from Rio Negro water or obtained commercially (Sigma Aldrich; SA). In well water, tambaqui exhibited typical hyperventilatory responses to hypoxia or hypercapnia. These responses were prevented by simultaneously exposing fish to SA HA (20 mg l−1). The negative effects of SA HA on ventilation were prevented when natural DOC (30 mg l−1; extracted from Rio Negro water after first removing the endogenous HA fraction) was added concurrently, indicating a protective effect of this non-humic acid DOC fraction. The hyperventilatory responses were unaffected during acute exposure or after acclimation of fish to Rio Negro water. HA extracted from Rio Negro water did not impair the hyperventilatory responses to hypoxia or hypercapnia. This study, while demonstrating a negative effect of SA HA derived from peat (coal) on the control of breathing in tambaqui, failed to reveal any detrimental consequences of HA (derived from the decomposition of a variety of lignin-rich plants) naturally occurring in the blackwaters of the Rio Negro. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T10:27:01Z 2021-06-25T10:27:01Z 2021-08-01 |
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.chemosphere.2021.130314 Chemosphere, v. 277. 1879-1298 0045-6535 http://hdl.handle.net/11449/206126 10.1016/j.chemosphere.2021.130314 2-s2.0-85103429180 |
url |
http://dx.doi.org/10.1016/j.chemosphere.2021.130314 http://hdl.handle.net/11449/206126 |
identifier_str_mv |
Chemosphere, v. 277. 1879-1298 0045-6535 10.1016/j.chemosphere.2021.130314 2-s2.0-85103429180 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Chemosphere |
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 |
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1799965262290616320 |