Contrasting effects of constant and fluctuating pCO₂ conditions on the exercise physiology of coral reef fishes
Ocean acidification (OA) is predicted to affect the physiology of some fishes. To date, most studies have investigated this issue using stable pCO₂ levels based on open ocean projections. Yet, most shallow, nearshore systems experience temporal and spatial pCO₂ fluctuations. For example, pCO₂ on cor...
Published in: | Marine Environmental Research |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Elsevier
2021
|
Subjects: | |
Online Access: | https://researchonline.jcu.edu.au/66106/1/66106.pdf |
id |
ftjamescook:oai:researchonline.jcu.edu.au:66106 |
---|---|
record_format |
openpolar |
spelling |
ftjamescook:oai:researchonline.jcu.edu.au:66106 2024-02-11T10:07:33+01:00 Contrasting effects of constant and fluctuating pCO₂ conditions on the exercise physiology of coral reef fishes Hannan, Kelly D. McMahon, Shannon J. Munday, Philip L. Rummer, Jodie L. 2021 application/pdf https://researchonline.jcu.edu.au/66106/1/66106.pdf unknown Elsevier https://doi.org/10.1016/j.marenvres.2020.105224 https://researchonline.jcu.edu.au/66106/ https://researchonline.jcu.edu.au/66106/1/66106.pdf Hannan, Kelly D., McMahon, Shannon J., Munday, Philip L., and Rummer, Jodie L. (2021) Contrasting effects of constant and fluctuating pCO₂ conditions on the exercise physiology of coral reef fishes. Marine Environmental Research, 163. 105224. restricted Article PeerReviewed 2021 ftjamescook https://doi.org/10.1016/j.marenvres.2020.105224 2024-01-22T23:47:27Z Ocean acidification (OA) is predicted to affect the physiology of some fishes. To date, most studies have investigated this issue using stable pCO₂ levels based on open ocean projections. Yet, most shallow, nearshore systems experience temporal and spatial pCO₂ fluctuations. For example, pCO₂ on coral reefs is highest at night and lowest during the day, but as OA progresses, both the average pCO₂ and magnitude of fluctuations are expected to increase. We exposed four coral reef fishes - Lutjanus fulviflamma, Caesio cuning, Abudefduf whitleyi, and Cheilodipterus quinquelineatus - to ambient, stable elevated, or fluctuating elevated pCO₂ conditions for 9-11 days. Then, we measured swimming performance, oxygen uptake rates, and haematological parameters during the day and at night. When compared to ambient pCO₂ conditions, L. fulviflamma, C. cuning, and A. whitleyi exposed to fluctuating elevated pCO₂ increased swimming performance, maximum oxygen uptake rates, and aerobic scope, regardless of time of day; whereas, the only nocturnal species studied, C. quinquelineatus, decreased maximum oxygen uptake rates and aerobic scope. Our findings suggest that exposure to fluctuating or stable elevated pCO₂ can physiologically benefit some coral reef fishes; however, other species, such as the cardinalfish examined here, may be more sensitive to future OA conditions. Article in Journal/Newspaper Ocean acidification James Cook University, Australia: ResearchOnline@JCU Marine Environmental Research 163 105224 |
institution |
Open Polar |
collection |
James Cook University, Australia: ResearchOnline@JCU |
op_collection_id |
ftjamescook |
language |
unknown |
description |
Ocean acidification (OA) is predicted to affect the physiology of some fishes. To date, most studies have investigated this issue using stable pCO₂ levels based on open ocean projections. Yet, most shallow, nearshore systems experience temporal and spatial pCO₂ fluctuations. For example, pCO₂ on coral reefs is highest at night and lowest during the day, but as OA progresses, both the average pCO₂ and magnitude of fluctuations are expected to increase. We exposed four coral reef fishes - Lutjanus fulviflamma, Caesio cuning, Abudefduf whitleyi, and Cheilodipterus quinquelineatus - to ambient, stable elevated, or fluctuating elevated pCO₂ conditions for 9-11 days. Then, we measured swimming performance, oxygen uptake rates, and haematological parameters during the day and at night. When compared to ambient pCO₂ conditions, L. fulviflamma, C. cuning, and A. whitleyi exposed to fluctuating elevated pCO₂ increased swimming performance, maximum oxygen uptake rates, and aerobic scope, regardless of time of day; whereas, the only nocturnal species studied, C. quinquelineatus, decreased maximum oxygen uptake rates and aerobic scope. Our findings suggest that exposure to fluctuating or stable elevated pCO₂ can physiologically benefit some coral reef fishes; however, other species, such as the cardinalfish examined here, may be more sensitive to future OA conditions. |
format |
Article in Journal/Newspaper |
author |
Hannan, Kelly D. McMahon, Shannon J. Munday, Philip L. Rummer, Jodie L. |
spellingShingle |
Hannan, Kelly D. McMahon, Shannon J. Munday, Philip L. Rummer, Jodie L. Contrasting effects of constant and fluctuating pCO₂ conditions on the exercise physiology of coral reef fishes |
author_facet |
Hannan, Kelly D. McMahon, Shannon J. Munday, Philip L. Rummer, Jodie L. |
author_sort |
Hannan, Kelly D. |
title |
Contrasting effects of constant and fluctuating pCO₂ conditions on the exercise physiology of coral reef fishes |
title_short |
Contrasting effects of constant and fluctuating pCO₂ conditions on the exercise physiology of coral reef fishes |
title_full |
Contrasting effects of constant and fluctuating pCO₂ conditions on the exercise physiology of coral reef fishes |
title_fullStr |
Contrasting effects of constant and fluctuating pCO₂ conditions on the exercise physiology of coral reef fishes |
title_full_unstemmed |
Contrasting effects of constant and fluctuating pCO₂ conditions on the exercise physiology of coral reef fishes |
title_sort |
contrasting effects of constant and fluctuating pco₂ conditions on the exercise physiology of coral reef fishes |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://researchonline.jcu.edu.au/66106/1/66106.pdf |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://doi.org/10.1016/j.marenvres.2020.105224 https://researchonline.jcu.edu.au/66106/ https://researchonline.jcu.edu.au/66106/1/66106.pdf Hannan, Kelly D., McMahon, Shannon J., Munday, Philip L., and Rummer, Jodie L. (2021) Contrasting effects of constant and fluctuating pCO₂ conditions on the exercise physiology of coral reef fishes. Marine Environmental Research, 163. 105224. |
op_rights |
restricted |
op_doi |
https://doi.org/10.1016/j.marenvres.2020.105224 |
container_title |
Marine Environmental Research |
container_volume |
163 |
container_start_page |
105224 |
_version_ |
1790606165515698176 |