Effects of ocean acidification on the larvae of a high-value pelagic fisheries species, mahi-mahi Coryphaena hippurus
Negative impacts of CO2-induced ocean acidification on marine organisms have proven to be variable both among and within taxa. For fishes, inconsistency confounds our ability to draw conclusions that apply across taxonomic groups and highlights the limitations of a nascent field with a narrow scope...
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ftdoajarticles:oai:doaj.org/article:c5fe7bb2b271404faf4ec2947dc1d619 2023-05-15T17:49:52+02:00 Effects of ocean acidification on the larvae of a high-value pelagic fisheries species, mahi-mahi Coryphaena hippurus S Bignami S Sponaugle RK Cowen 2014-10-01T00:00:00Z https://doi.org/10.3354/ab00598 https://doaj.org/article/c5fe7bb2b271404faf4ec2947dc1d619 EN eng Inter-Research https://www.int-res.com/abstracts/ab/v21/n3/p249-260/ https://doaj.org/toc/1864-7782 https://doaj.org/toc/1864-7790 1864-7782 1864-7790 doi:10.3354/ab00598 https://doaj.org/article/c5fe7bb2b271404faf4ec2947dc1d619 Aquatic Biology, Vol 21, Iss 3, Pp 249-260 (2014) Biology (General) QH301-705.5 Microbiology QR1-502 article 2014 ftdoajarticles https://doi.org/10.3354/ab00598 2022-12-31T05:19:12Z Negative impacts of CO2-induced ocean acidification on marine organisms have proven to be variable both among and within taxa. For fishes, inconsistency confounds our ability to draw conclusions that apply across taxonomic groups and highlights the limitations of a nascent field with a narrow scope of study species. Here, we present data from a series of 3 experiments on the larvae of mahi-mahi Coryphaena hippurus, a large pelagic tropical fish species of high economic value. Mahi-mahi larvae were raised for up to 21 d under either ambient seawater conditions (350 to 490 µatm pCO2) or projected scenarios of ocean acidification (770 to 2170 µatm pCO2). Evaluation of hatch rate, larval size, development, swimming activity, swimming ability (Ucrit), and otolith (ear stone) formation produced few significant effects. However, larvae unexpectedly exhibited significantly larger size-at-age and faster developmental rate during 1 out of 3 experiments, possibly driven by metabolic compensation to elevated pCO2 via a corresponding decrease in routine swimming velocity. Furthermore, larvae had significantly larger otoliths at 2170 µatm pCO2, and a similar but non-significant trend also occurred at 1200 µatm pCO2, suggesting potential implications for hearing sensitivity. The lack of effect on most variables measured in this study provides an optimistic indication that this large tropical species, which inhabits the offshore pelagic environment, may not be overly susceptible to ocean acidification. However, the presence of some treatment effects on growth, swimming activity, and otolith formation suggests the presence of subtle, but possibly widespread, effects of acidification on larval mahi-mahi, the cumulative consequences of which are still unknown. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Aquatic Biology 21 3 249 260 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Biology (General) QH301-705.5 Microbiology QR1-502 |
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Biology (General) QH301-705.5 Microbiology QR1-502 S Bignami S Sponaugle RK Cowen Effects of ocean acidification on the larvae of a high-value pelagic fisheries species, mahi-mahi Coryphaena hippurus |
topic_facet |
Biology (General) QH301-705.5 Microbiology QR1-502 |
description |
Negative impacts of CO2-induced ocean acidification on marine organisms have proven to be variable both among and within taxa. For fishes, inconsistency confounds our ability to draw conclusions that apply across taxonomic groups and highlights the limitations of a nascent field with a narrow scope of study species. Here, we present data from a series of 3 experiments on the larvae of mahi-mahi Coryphaena hippurus, a large pelagic tropical fish species of high economic value. Mahi-mahi larvae were raised for up to 21 d under either ambient seawater conditions (350 to 490 µatm pCO2) or projected scenarios of ocean acidification (770 to 2170 µatm pCO2). Evaluation of hatch rate, larval size, development, swimming activity, swimming ability (Ucrit), and otolith (ear stone) formation produced few significant effects. However, larvae unexpectedly exhibited significantly larger size-at-age and faster developmental rate during 1 out of 3 experiments, possibly driven by metabolic compensation to elevated pCO2 via a corresponding decrease in routine swimming velocity. Furthermore, larvae had significantly larger otoliths at 2170 µatm pCO2, and a similar but non-significant trend also occurred at 1200 µatm pCO2, suggesting potential implications for hearing sensitivity. The lack of effect on most variables measured in this study provides an optimistic indication that this large tropical species, which inhabits the offshore pelagic environment, may not be overly susceptible to ocean acidification. However, the presence of some treatment effects on growth, swimming activity, and otolith formation suggests the presence of subtle, but possibly widespread, effects of acidification on larval mahi-mahi, the cumulative consequences of which are still unknown. |
format |
Article in Journal/Newspaper |
author |
S Bignami S Sponaugle RK Cowen |
author_facet |
S Bignami S Sponaugle RK Cowen |
author_sort |
S Bignami |
title |
Effects of ocean acidification on the larvae of a high-value pelagic fisheries species, mahi-mahi Coryphaena hippurus |
title_short |
Effects of ocean acidification on the larvae of a high-value pelagic fisheries species, mahi-mahi Coryphaena hippurus |
title_full |
Effects of ocean acidification on the larvae of a high-value pelagic fisheries species, mahi-mahi Coryphaena hippurus |
title_fullStr |
Effects of ocean acidification on the larvae of a high-value pelagic fisheries species, mahi-mahi Coryphaena hippurus |
title_full_unstemmed |
Effects of ocean acidification on the larvae of a high-value pelagic fisheries species, mahi-mahi Coryphaena hippurus |
title_sort |
effects of ocean acidification on the larvae of a high-value pelagic fisheries species, mahi-mahi coryphaena hippurus |
publisher |
Inter-Research |
publishDate |
2014 |
url |
https://doi.org/10.3354/ab00598 https://doaj.org/article/c5fe7bb2b271404faf4ec2947dc1d619 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Aquatic Biology, Vol 21, Iss 3, Pp 249-260 (2014) |
op_relation |
https://www.int-res.com/abstracts/ab/v21/n3/p249-260/ https://doaj.org/toc/1864-7782 https://doaj.org/toc/1864-7790 1864-7782 1864-7790 doi:10.3354/ab00598 https://doaj.org/article/c5fe7bb2b271404faf4ec2947dc1d619 |
op_doi |
https://doi.org/10.3354/ab00598 |
container_title |
Aquatic Biology |
container_volume |
21 |
container_issue |
3 |
container_start_page |
249 |
op_container_end_page |
260 |
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