Effect of ocean acidification on otolith development in larvae of a tropical marine fish
Calcification in many invertebrate species is predicted to decline due to ocean acidification. The potential effects of elevated CO 2 and reduced carbonate saturation state on other species, such as fish, are less well understood. Fish otoliths (earbones) are composed of aragonite, and thus, might b...
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ftdoajarticles:oai:doaj.org/article:5d8e496ddc994fa3800643d2d60a28ce 2023-05-15T17:50:12+02:00 Effect of ocean acidification on otolith development in larvae of a tropical marine fish P. L. Munday V. Hernaman D. L. Dixson S. R. Thorrold 2011-06-01T00:00:00Z https://doi.org/10.5194/bg-8-1631-2011 https://doaj.org/article/5d8e496ddc994fa3800643d2d60a28ce EN eng Copernicus Publications http://www.biogeosciences.net/8/1631/2011/bg-8-1631-2011.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-8-1631-2011 1726-4170 1726-4189 https://doaj.org/article/5d8e496ddc994fa3800643d2d60a28ce Biogeosciences, Vol 8, Iss 6, Pp 1631-1641 (2011) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2011 ftdoajarticles https://doi.org/10.5194/bg-8-1631-2011 2022-12-31T03:40:04Z Calcification in many invertebrate species is predicted to decline due to ocean acidification. The potential effects of elevated CO 2 and reduced carbonate saturation state on other species, such as fish, are less well understood. Fish otoliths (earbones) are composed of aragonite, and thus, might be susceptible to either the reduced availability of carbonate ions in seawater at low pH, or to changes in extracellular concentrations of bicarbonate and carbonate ions caused by acid-base regulation in fish exposed to high p CO 2 . We reared larvae of the clownfish Amphiprion percula from hatching to settlement at three pH NBS and p CO 2 levels (control: ~pH 8.15 and 404 μatm CO 2 intermediate: pH 7.8 and 1050 μatm CO 2 extreme: pH 7.6 and 1721 μatm CO 2 ) to test the possible effects of ocean acidification on otolith development. There was no effect of the intermediate treatment (pH 7.8 and 1050 μatm CO 2 ) on otolith size, shape, symmetry between left and right otoliths, or otolith elemental chemistry, compared with controls. However, in the more extreme treatment (pH 7.6 and 1721 μatm CO 2 ) otolith area and maximum length were larger than controls, although no other traits were significantly affected. Our results support the hypothesis that pH regulation in the otolith endolymph can lead to increased precipitation of CaCO 3 in otoliths of larval fish exposed to elevated CO 2 , as proposed by an earlier study, however, our results also show that sensitivity varies considerably among species. Importantly, our results suggest that otolith development in clownfishes is robust to even the more pessimistic changes in ocean chemistry predicted to occur by 2100. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Biogeosciences 8 6 1631 1641 |
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Directory of Open Access Journals: DOAJ Articles |
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Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
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Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 P. L. Munday V. Hernaman D. L. Dixson S. R. Thorrold Effect of ocean acidification on otolith development in larvae of a tropical marine fish |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Calcification in many invertebrate species is predicted to decline due to ocean acidification. The potential effects of elevated CO 2 and reduced carbonate saturation state on other species, such as fish, are less well understood. Fish otoliths (earbones) are composed of aragonite, and thus, might be susceptible to either the reduced availability of carbonate ions in seawater at low pH, or to changes in extracellular concentrations of bicarbonate and carbonate ions caused by acid-base regulation in fish exposed to high p CO 2 . We reared larvae of the clownfish Amphiprion percula from hatching to settlement at three pH NBS and p CO 2 levels (control: ~pH 8.15 and 404 μatm CO 2 intermediate: pH 7.8 and 1050 μatm CO 2 extreme: pH 7.6 and 1721 μatm CO 2 ) to test the possible effects of ocean acidification on otolith development. There was no effect of the intermediate treatment (pH 7.8 and 1050 μatm CO 2 ) on otolith size, shape, symmetry between left and right otoliths, or otolith elemental chemistry, compared with controls. However, in the more extreme treatment (pH 7.6 and 1721 μatm CO 2 ) otolith area and maximum length were larger than controls, although no other traits were significantly affected. Our results support the hypothesis that pH regulation in the otolith endolymph can lead to increased precipitation of CaCO 3 in otoliths of larval fish exposed to elevated CO 2 , as proposed by an earlier study, however, our results also show that sensitivity varies considerably among species. Importantly, our results suggest that otolith development in clownfishes is robust to even the more pessimistic changes in ocean chemistry predicted to occur by 2100. |
format |
Article in Journal/Newspaper |
author |
P. L. Munday V. Hernaman D. L. Dixson S. R. Thorrold |
author_facet |
P. L. Munday V. Hernaman D. L. Dixson S. R. Thorrold |
author_sort |
P. L. Munday |
title |
Effect of ocean acidification on otolith development in larvae of a tropical marine fish |
title_short |
Effect of ocean acidification on otolith development in larvae of a tropical marine fish |
title_full |
Effect of ocean acidification on otolith development in larvae of a tropical marine fish |
title_fullStr |
Effect of ocean acidification on otolith development in larvae of a tropical marine fish |
title_full_unstemmed |
Effect of ocean acidification on otolith development in larvae of a tropical marine fish |
title_sort |
effect of ocean acidification on otolith development in larvae of a tropical marine fish |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://doi.org/10.5194/bg-8-1631-2011 https://doaj.org/article/5d8e496ddc994fa3800643d2d60a28ce |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Biogeosciences, Vol 8, Iss 6, Pp 1631-1641 (2011) |
op_relation |
http://www.biogeosciences.net/8/1631/2011/bg-8-1631-2011.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-8-1631-2011 1726-4170 1726-4189 https://doaj.org/article/5d8e496ddc994fa3800643d2d60a28ce |
op_doi |
https://doi.org/10.5194/bg-8-1631-2011 |
container_title |
Biogeosciences |
container_volume |
8 |
container_issue |
6 |
container_start_page |
1631 |
op_container_end_page |
1641 |
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1766156848713433088 |