Juvenile Antarctic rockcod (Trematomus bernacchii) are physiologically robust to CO2-acidified seawater
To date, numerous studies have shown negative impacts of CO2-acidified seawater (i.e. ocean acidification, OA) on marine organisms, including calcifying invertebrates and fishes; however, limited research has been conducted on the physiological effects of OA on polar fishes and even less on the impa...
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ftcdlib:oai:escholarship.org:ark:/13030/qt1z94h6p7 2023-09-05T13:12:51+02:00 Juvenile Antarctic rockcod (Trematomus bernacchii) are physiologically robust to CO2-acidified seawater Davis, Brittany E Miller, Nathan A Flynn, Erin E Todgham, Anne E 1203 - 1213 2016-01-01 application/pdf https://escholarship.org/uc/item/1z94h6p7 unknown eScholarship, University of California qt1z94h6p7 https://escholarship.org/uc/item/1z94h6p7 public Journal of Experimental Biology, vol 219, iss 8 Cardiovascular Life Below Water Acids Aging Animals Antarctic Regions Basal Metabolism Carbon Dioxide Citrate (si)-Synthase Fishes Heart Muscles Oxygen Consumption Respiration Seawater Antarctica Cardiorespiratory physiology Early life stages Notothenioid Ocean acidification Biological Sciences Medical and Health Sciences Physiology article 2016 ftcdlib 2023-08-21T18:03:50Z To date, numerous studies have shown negative impacts of CO2-acidified seawater (i.e. ocean acidification, OA) on marine organisms, including calcifying invertebrates and fishes; however, limited research has been conducted on the physiological effects of OA on polar fishes and even less on the impact of OA on early developmental stages of polar fishes. We evaluated aspects of aerobic metabolism and cardiorespiratory physiology of juvenile emerald rockcod, ITALIC! Trematomus bernacchii, an abundant fish in the Ross Sea, Antarctica, to elevated partial pressure of carbon dioxide ( ITALIC! PCO2 ) [420 (ambient), 650 (moderate) and 1050 (high) μatm ITALIC! PCO2 ] over a 1month period. We examined cardiorespiratory physiology, including heart rate, stroke volume, cardiac output and ventilation rate, whole organism metabolism via oxygen consumption rate and sub-organismal aerobic capacity by citrate synthase enzyme activity. Juvenile fish showed an increase in ventilation rate under high ITALIC! PCO2compared with ambient ITALIC! PCO2 , whereas cardiac performance, oxygen consumption and citrate synthase activity were not significantly affected by elevated ITALIC! PCO2 Acclimation time had a significant effect on ventilation rate, stroke volume, cardiac output and citrate synthase activity, such that all metrics increased over the 4week exposure period. These results suggest that juvenile emerald rockcod are robust to near-future increases in OA and may have the capacity to adjust for future increases in ITALIC! PCO2 by increasing acid-base compensation through increased ventilation. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ocean acidification Ross Sea University of California: eScholarship Antarctic Ross Sea |
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Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Cardiovascular Life Below Water Acids Aging Animals Antarctic Regions Basal Metabolism Carbon Dioxide Citrate (si)-Synthase Fishes Heart Muscles Oxygen Consumption Respiration Seawater Antarctica Cardiorespiratory physiology Early life stages Notothenioid Ocean acidification Biological Sciences Medical and Health Sciences Physiology |
spellingShingle |
Cardiovascular Life Below Water Acids Aging Animals Antarctic Regions Basal Metabolism Carbon Dioxide Citrate (si)-Synthase Fishes Heart Muscles Oxygen Consumption Respiration Seawater Antarctica Cardiorespiratory physiology Early life stages Notothenioid Ocean acidification Biological Sciences Medical and Health Sciences Physiology Davis, Brittany E Miller, Nathan A Flynn, Erin E Todgham, Anne E Juvenile Antarctic rockcod (Trematomus bernacchii) are physiologically robust to CO2-acidified seawater |
topic_facet |
Cardiovascular Life Below Water Acids Aging Animals Antarctic Regions Basal Metabolism Carbon Dioxide Citrate (si)-Synthase Fishes Heart Muscles Oxygen Consumption Respiration Seawater Antarctica Cardiorespiratory physiology Early life stages Notothenioid Ocean acidification Biological Sciences Medical and Health Sciences Physiology |
description |
To date, numerous studies have shown negative impacts of CO2-acidified seawater (i.e. ocean acidification, OA) on marine organisms, including calcifying invertebrates and fishes; however, limited research has been conducted on the physiological effects of OA on polar fishes and even less on the impact of OA on early developmental stages of polar fishes. We evaluated aspects of aerobic metabolism and cardiorespiratory physiology of juvenile emerald rockcod, ITALIC! Trematomus bernacchii, an abundant fish in the Ross Sea, Antarctica, to elevated partial pressure of carbon dioxide ( ITALIC! PCO2 ) [420 (ambient), 650 (moderate) and 1050 (high) μatm ITALIC! PCO2 ] over a 1month period. We examined cardiorespiratory physiology, including heart rate, stroke volume, cardiac output and ventilation rate, whole organism metabolism via oxygen consumption rate and sub-organismal aerobic capacity by citrate synthase enzyme activity. Juvenile fish showed an increase in ventilation rate under high ITALIC! PCO2compared with ambient ITALIC! PCO2 , whereas cardiac performance, oxygen consumption and citrate synthase activity were not significantly affected by elevated ITALIC! PCO2 Acclimation time had a significant effect on ventilation rate, stroke volume, cardiac output and citrate synthase activity, such that all metrics increased over the 4week exposure period. These results suggest that juvenile emerald rockcod are robust to near-future increases in OA and may have the capacity to adjust for future increases in ITALIC! PCO2 by increasing acid-base compensation through increased ventilation. |
format |
Article in Journal/Newspaper |
author |
Davis, Brittany E Miller, Nathan A Flynn, Erin E Todgham, Anne E |
author_facet |
Davis, Brittany E Miller, Nathan A Flynn, Erin E Todgham, Anne E |
author_sort |
Davis, Brittany E |
title |
Juvenile Antarctic rockcod (Trematomus bernacchii) are physiologically robust to CO2-acidified seawater |
title_short |
Juvenile Antarctic rockcod (Trematomus bernacchii) are physiologically robust to CO2-acidified seawater |
title_full |
Juvenile Antarctic rockcod (Trematomus bernacchii) are physiologically robust to CO2-acidified seawater |
title_fullStr |
Juvenile Antarctic rockcod (Trematomus bernacchii) are physiologically robust to CO2-acidified seawater |
title_full_unstemmed |
Juvenile Antarctic rockcod (Trematomus bernacchii) are physiologically robust to CO2-acidified seawater |
title_sort |
juvenile antarctic rockcod (trematomus bernacchii) are physiologically robust to co2-acidified seawater |
publisher |
eScholarship, University of California |
publishDate |
2016 |
url |
https://escholarship.org/uc/item/1z94h6p7 |
op_coverage |
1203 - 1213 |
geographic |
Antarctic Ross Sea |
geographic_facet |
Antarctic Ross Sea |
genre |
Antarc* Antarctic Antarctica Ocean acidification Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ocean acidification Ross Sea |
op_source |
Journal of Experimental Biology, vol 219, iss 8 |
op_relation |
qt1z94h6p7 https://escholarship.org/uc/item/1z94h6p7 |
op_rights |
public |
_version_ |
1776202027521540096 |