Effects of vagotomy and pharmacological blocking on heart rate of the toad <i>Rhinella arenarum</i> (Anura: Bufonidae) during forced submersion
- Autores
- Cervino, Claudio; Rodríguez, Enrique M.
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Toads of Rhinella (=Bufo) arenarum were subjected to a condition of forced submersion duringa 40-minute period, to deepen the understanding of the mechanisms involved in the control ofboth submersion and emersion. Animals previously submitted to a first control measurementseries, were then injected with atropine or propranolol, or were vagotomized. In animals eitherinjected with atropine or vagotomized, a higher heart rate (HR) than in the control group wasobserved, before, during and after the forced submersion. These animals were able to decreaseHR, although in a lesser extent than controls, suggesting that other mechanisms in addition tovagal activity are also producing and maintaining bradycardia during the submersion period.In those animals injected with propranolol (a β-adrenergic blocker), a HR lower than that ofcontrols were observed only at the beginning of the submersion and during the emersion phase.The low HR caused by propranolol during emersion with buccal pumping shows the importanceof the sympathetic system in increasing HR during emersion.
Asociación Herpetológica Argentina (AHA) - Materia
-
Ciencias Naturales
herpetología
anfibios - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc/2.5/ar/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/62735
Ver los metadatos del registro completo
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Effects of vagotomy and pharmacological blocking on heart rate of the toad <i>Rhinella arenarum</i> (Anura: Bufonidae) during forced submersionCervino, ClaudioRodríguez, Enrique M.Ciencias NaturalesherpetologíaanfibiosToads of Rhinella (=Bufo) arenarum were subjected to a condition of forced submersion duringa 40-minute period, to deepen the understanding of the mechanisms involved in the control ofboth submersion and emersion. Animals previously submitted to a first control measurementseries, were then injected with atropine or propranolol, or were vagotomized. In animals eitherinjected with atropine or vagotomized, a higher heart rate (HR) than in the control group wasobserved, before, during and after the forced submersion. These animals were able to decreaseHR, although in a lesser extent than controls, suggesting that other mechanisms in addition tovagal activity are also producing and maintaining bradycardia during the submersion period.In those animals injected with propranolol (a β-adrenergic blocker), a HR lower than that ofcontrols were observed only at the beginning of the submersion and during the emersion phase.The low HR caused by propranolol during emersion with buccal pumping shows the importanceof the sympathetic system in increasing HR during emersion.Asociación Herpetológica Argentina (AHA)2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf75-82http://sedici.unlp.edu.ar/handle/10915/62735enginfo:eu-repo/semantics/altIdentifier/url/http://ppct.caicyt.gov.ar/index.php/cuadherpetol/article/view/10256info:eu-repo/semantics/altIdentifier/issn/1852-5768info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc/2.5/ar/Creative Commons Attribution-NonCommercial 2.5 Argentina (CC BY-NC 2.5)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:08:10Zoai:sedici.unlp.edu.ar:10915/62735Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:08:10.386SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Effects of vagotomy and pharmacological blocking on heart rate of the toad <i>Rhinella arenarum</i> (Anura: Bufonidae) during forced submersion |
title |
Effects of vagotomy and pharmacological blocking on heart rate of the toad <i>Rhinella arenarum</i> (Anura: Bufonidae) during forced submersion |
spellingShingle |
Effects of vagotomy and pharmacological blocking on heart rate of the toad <i>Rhinella arenarum</i> (Anura: Bufonidae) during forced submersion Cervino, Claudio Ciencias Naturales herpetología anfibios |
title_short |
Effects of vagotomy and pharmacological blocking on heart rate of the toad <i>Rhinella arenarum</i> (Anura: Bufonidae) during forced submersion |
title_full |
Effects of vagotomy and pharmacological blocking on heart rate of the toad <i>Rhinella arenarum</i> (Anura: Bufonidae) during forced submersion |
title_fullStr |
Effects of vagotomy and pharmacological blocking on heart rate of the toad <i>Rhinella arenarum</i> (Anura: Bufonidae) during forced submersion |
title_full_unstemmed |
Effects of vagotomy and pharmacological blocking on heart rate of the toad <i>Rhinella arenarum</i> (Anura: Bufonidae) during forced submersion |
title_sort |
Effects of vagotomy and pharmacological blocking on heart rate of the toad <i>Rhinella arenarum</i> (Anura: Bufonidae) during forced submersion |
dc.creator.none.fl_str_mv |
Cervino, Claudio Rodríguez, Enrique M. |
author |
Cervino, Claudio |
author_facet |
Cervino, Claudio Rodríguez, Enrique M. |
author_role |
author |
author2 |
Rodríguez, Enrique M. |
author2_role |
author |
dc.subject.none.fl_str_mv |
Ciencias Naturales herpetología anfibios |
topic |
Ciencias Naturales herpetología anfibios |
dc.description.none.fl_txt_mv |
Toads of Rhinella (=Bufo) arenarum were subjected to a condition of forced submersion duringa 40-minute period, to deepen the understanding of the mechanisms involved in the control ofboth submersion and emersion. Animals previously submitted to a first control measurementseries, were then injected with atropine or propranolol, or were vagotomized. In animals eitherinjected with atropine or vagotomized, a higher heart rate (HR) than in the control group wasobserved, before, during and after the forced submersion. These animals were able to decreaseHR, although in a lesser extent than controls, suggesting that other mechanisms in addition tovagal activity are also producing and maintaining bradycardia during the submersion period.In those animals injected with propranolol (a β-adrenergic blocker), a HR lower than that ofcontrols were observed only at the beginning of the submersion and during the emersion phase.The low HR caused by propranolol during emersion with buccal pumping shows the importanceof the sympathetic system in increasing HR during emersion. Asociación Herpetológica Argentina (AHA) |
description |
Toads of Rhinella (=Bufo) arenarum were subjected to a condition of forced submersion duringa 40-minute period, to deepen the understanding of the mechanisms involved in the control ofboth submersion and emersion. Animals previously submitted to a first control measurementseries, were then injected with atropine or propranolol, or were vagotomized. In animals eitherinjected with atropine or vagotomized, a higher heart rate (HR) than in the control group wasobserved, before, during and after the forced submersion. These animals were able to decreaseHR, although in a lesser extent than controls, suggesting that other mechanisms in addition tovagal activity are also producing and maintaining bradycardia during the submersion period.In those animals injected with propranolol (a β-adrenergic blocker), a HR lower than that ofcontrols were observed only at the beginning of the submersion and during the emersion phase.The low HR caused by propranolol during emersion with buccal pumping shows the importanceof the sympathetic system in increasing HR during emersion. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/62735 |
url |
http://sedici.unlp.edu.ar/handle/10915/62735 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://ppct.caicyt.gov.ar/index.php/cuadherpetol/article/view/10256 info:eu-repo/semantics/altIdentifier/issn/1852-5768 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc/2.5/ar/ Creative Commons Attribution-NonCommercial 2.5 Argentina (CC BY-NC 2.5) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc/2.5/ar/ Creative Commons Attribution-NonCommercial 2.5 Argentina (CC BY-NC 2.5) |
dc.format.none.fl_str_mv |
application/pdf 75-82 |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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