Effects of CO<sub>2</sub>-driven ocean acidification on early life stages of marine medaka (<i>Oryzias melastigma</i>)
The potential effects of high CO<sub>2</sub> and associated ocean acidification (OA) in marine fishes and other non-calcified organisms are less well understood. In this study, we investigated the responses of early life stages (ELS) of marine medaka (<i>Oryzias melastigma</i>...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2015-06-01
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| Series: | Biogeosciences |
| Online Access: | http://www.biogeosciences.net/12/3861/2015/bg-12-3861-2015.pdf |
| _version_ | 1818482891071422464 |
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| author | J. Mu F. Jin J. Wang N. Zheng Y. Cong |
| author_facet | J. Mu F. Jin J. Wang N. Zheng Y. Cong |
| author_sort | J. Mu |
| collection | DOAJ |
| description | The potential effects of high CO<sub>2</sub> and associated ocean acidification
(OA) in marine fishes and other non-calcified organisms are less well
understood. In this study, we investigated the responses of early life stages
(ELS) of marine medaka (<i>Oryzias melastigma</i>) exposed to a series of
experimental manipulation of CO<sub>2</sub> levels. Results showed that
CO<sub>2</sub>-driven seawater acidification (pH 7.6 and pH 7.2) had no
detectable effect on hatching time, hatching rate, or heart rate of embryos.
However, the deformity rate of larvae in the pH 7.2 treatment was
significantly higher than that in the control treatment. There is no
significant difference between the left and right otolith areas in each
treatment. However, the average otolith area of larvae in the pH 7.6
treatment was significantly smaller than that in the control. Such
alterations in the developmental abnormalities and otolith size of marine
medaka larvae due to elevated-CO<sub>2</sub> levels suggests that this species will
be increasingly challenged by future OA. Further studies of the impacts of OA
on marine fish to assess whether or not the environmental influence in one
generation can affect the later life history and the phenotype of subsequent
generations are needed. |
| first_indexed | 2024-12-10T11:52:42Z |
| format | Article |
| id | doaj.art-a9fcaec49be94cfd930127292ad99c0c |
| institution | Directory Open Access Journal |
| issn | 1726-4170 1726-4189 |
| language | English |
| last_indexed | 2024-12-10T11:52:42Z |
| publishDate | 2015-06-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Biogeosciences |
| spelling | doaj.art-a9fcaec49be94cfd930127292ad99c0c2022-12-22T01:49:53ZengCopernicus PublicationsBiogeosciences1726-41701726-41892015-06-0112123861386810.5194/bg-12-3861-2015Effects of CO<sub>2</sub>-driven ocean acidification on early life stages of marine medaka (<i>Oryzias melastigma</i>)J. Mu0F. Jin1J. Wang2N. Zheng3Y. Cong4Division of Mar. Chem., National Marine Environmental Monitoring Center, Dalian 116023, ChinaDivision of Mar. Chem., National Marine Environmental Monitoring Center, Dalian 116023, ChinaDivision of Mar. Chem., National Marine Environmental Monitoring Center, Dalian 116023, ChinaDivision of Mar. Chem., National Marine Environmental Monitoring Center, Dalian 116023, ChinaDivision of Mar. Chem., National Marine Environmental Monitoring Center, Dalian 116023, ChinaThe potential effects of high CO<sub>2</sub> and associated ocean acidification (OA) in marine fishes and other non-calcified organisms are less well understood. In this study, we investigated the responses of early life stages (ELS) of marine medaka (<i>Oryzias melastigma</i>) exposed to a series of experimental manipulation of CO<sub>2</sub> levels. Results showed that CO<sub>2</sub>-driven seawater acidification (pH 7.6 and pH 7.2) had no detectable effect on hatching time, hatching rate, or heart rate of embryos. However, the deformity rate of larvae in the pH 7.2 treatment was significantly higher than that in the control treatment. There is no significant difference between the left and right otolith areas in each treatment. However, the average otolith area of larvae in the pH 7.6 treatment was significantly smaller than that in the control. Such alterations in the developmental abnormalities and otolith size of marine medaka larvae due to elevated-CO<sub>2</sub> levels suggests that this species will be increasingly challenged by future OA. Further studies of the impacts of OA on marine fish to assess whether or not the environmental influence in one generation can affect the later life history and the phenotype of subsequent generations are needed.http://www.biogeosciences.net/12/3861/2015/bg-12-3861-2015.pdf |
| spellingShingle | J. Mu F. Jin J. Wang N. Zheng Y. Cong Effects of CO<sub>2</sub>-driven ocean acidification on early life stages of marine medaka (<i>Oryzias melastigma</i>) Biogeosciences |
| title | Effects of CO<sub>2</sub>-driven ocean acidification on early life stages of marine medaka (<i>Oryzias melastigma</i>) |
| title_full | Effects of CO<sub>2</sub>-driven ocean acidification on early life stages of marine medaka (<i>Oryzias melastigma</i>) |
| title_fullStr | Effects of CO<sub>2</sub>-driven ocean acidification on early life stages of marine medaka (<i>Oryzias melastigma</i>) |
| title_full_unstemmed | Effects of CO<sub>2</sub>-driven ocean acidification on early life stages of marine medaka (<i>Oryzias melastigma</i>) |
| title_short | Effects of CO<sub>2</sub>-driven ocean acidification on early life stages of marine medaka (<i>Oryzias melastigma</i>) |
| title_sort | effects of co sub 2 sub driven ocean acidification on early life stages of marine medaka i oryzias melastigma i |
| url | http://www.biogeosciences.net/12/3861/2015/bg-12-3861-2015.pdf |
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