The effects of acute oxygen changes on heart rate in the freshwater crab Poppiana dentata ()

ABSTRACT Heart rate is a key physiological feature that can be used to assess the response of organisms to changing environmental conditions in aquatic habitats, such as acute fluctuations in oxygen levels and hypoxic conditions. This experiment, therefore, investigated cardiac responses in a freshw...

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Autores principales:	Shivani Singh,Delezia, Alkins-Koo,Mary, Rostant,Luke Victor, Mohammed,Azad
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2020
Materias:	Poppiana dentata cardiac responses acute oxygen freshwater crab non-invasive Trinidad and Tobago
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000300480
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spelling	oai:scielo:S0718-560X20200003004802020-07-23The effects of acute oxygen changes on heart rate in the freshwater crab Poppiana dentata ()Shivani Singh,DeleziaAlkins-Koo,MaryRostant,Luke VictorMohammed,Azad Poppiana dentata cardiac responses acute oxygen freshwater crab non-invasive Trinidad and Tobago ABSTRACT Heart rate is a key physiological feature that can be used to assess the response of organisms to changing environmental conditions in aquatic habitats, such as acute fluctuations in oxygen levels and hypoxic conditions. This experiment, therefore, investigated cardiac responses in a freshwater brachyuran species, Poppiana dentata, exposed to low oxygen levels. Heart rate was derived from beats per minute (bpm) signals (n = 576) using an infrared, non-invasive technique over a 96 h period, under different dissolved oxygen (DO) conditions. These involved three regimes: normoxic (6.8 ± 0.1 mg L-1), decreasing DO to hypoxic levels (6.2 to 1.7 mg L-1), and recovery with normoxic levels (6.3 ± 0.1 mg L-1). Changes in heart rates among the three regimes were significant (P < 0.05); reflecting the shift in heart rate during different conditions of oxygen availability, normoxic (59 to 61 bpm), declining DO (54 to 62 bpm) and recovery DO (53 to 64 bpm). Additionally, the normal rhythmicity of heart rates under the normoxic condition was not maintained throughout most of the declining DO and recovery periods. P. dentata has demonstrated cardiac compensations in heart rate during low oxygen levels, providing insight into the species cardiac physiology.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.48 n.3 20202020-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000300480en10.3856/vol48-issue3-fulltext-2397
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Poppiana dentata cardiac responses acute oxygen freshwater crab non-invasive Trinidad and Tobago
spellingShingle	Poppiana dentata cardiac responses acute oxygen freshwater crab non-invasive Trinidad and Tobago Shivani Singh,Delezia Alkins-Koo,Mary Rostant,Luke Victor Mohammed,Azad The effects of acute oxygen changes on heart rate in the freshwater crab Poppiana dentata ()
description	ABSTRACT Heart rate is a key physiological feature that can be used to assess the response of organisms to changing environmental conditions in aquatic habitats, such as acute fluctuations in oxygen levels and hypoxic conditions. This experiment, therefore, investigated cardiac responses in a freshwater brachyuran species, Poppiana dentata, exposed to low oxygen levels. Heart rate was derived from beats per minute (bpm) signals (n = 576) using an infrared, non-invasive technique over a 96 h period, under different dissolved oxygen (DO) conditions. These involved three regimes: normoxic (6.8 ± 0.1 mg L-1), decreasing DO to hypoxic levels (6.2 to 1.7 mg L-1), and recovery with normoxic levels (6.3 ± 0.1 mg L-1). Changes in heart rates among the three regimes were significant (P < 0.05); reflecting the shift in heart rate during different conditions of oxygen availability, normoxic (59 to 61 bpm), declining DO (54 to 62 bpm) and recovery DO (53 to 64 bpm). Additionally, the normal rhythmicity of heart rates under the normoxic condition was not maintained throughout most of the declining DO and recovery periods. P. dentata has demonstrated cardiac compensations in heart rate during low oxygen levels, providing insight into the species cardiac physiology.
author	Shivani Singh,Delezia Alkins-Koo,Mary Rostant,Luke Victor Mohammed,Azad
author_facet	Shivani Singh,Delezia Alkins-Koo,Mary Rostant,Luke Victor Mohammed,Azad
author_sort	Shivani Singh,Delezia
title	The effects of acute oxygen changes on heart rate in the freshwater crab Poppiana dentata ()
title_short	The effects of acute oxygen changes on heart rate in the freshwater crab Poppiana dentata ()
title_full	The effects of acute oxygen changes on heart rate in the freshwater crab Poppiana dentata ()
title_fullStr	The effects of acute oxygen changes on heart rate in the freshwater crab Poppiana dentata ()
title_full_unstemmed	The effects of acute oxygen changes on heart rate in the freshwater crab Poppiana dentata ()
title_sort	effects of acute oxygen changes on heart rate in the freshwater crab poppiana dentata ()
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000300480
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The effects of acute oxygen changes on heart rate in the freshwater crab Poppiana dentata ()

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