Seawater carbonate chemistry and reproduction of a coral reef fish in a laboratory experiment
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| Format: | Dataset Open Access |
| Language: | en |
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2013
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| _version_ | 1867170038931259392 |
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| author | Miller, Garielle M Watson, Sue-Ann McCormick, Mark I Munday, Philip L |
| author_facet | Miller, Garielle M Watson, Sue-Ann McCormick, Mark I Munday, Philip L |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Ocean acidification is predicted to negatively impact the reproduction of many marine species, either by reducing fertilization success or diverting energy from reproductive effort. While recent studies have demonstrated how ocean acidification will affect larval and juvenile fishes, little is known about how increasing partial pressure of carbon dioxide (pCO2) and decreasing pH might affect reproduction in adult fishes. We investigated the effects of near-future levels of pCO2 on the reproductive performance of the cinnamon anemonefish, Amphiprion melanopus, from the Great Barrier Reef, Australia. Breeding pairs were held under three CO2 treatments [Current-day Control (430 µatm), Moderate (584 µatm) and High (1032 µatm)] for a 9-month period that included the summer breeding season. Unexpectedly, increased CO2 dramatically stimulated breeding activity in this species of fish. Over twice as many pairs bred in the Moderate (67% of pairs) and High (55%) compared to the Control (27%) CO2 treatment. Pairs in the High CO2 group produced double the number of clutches per pair and 67% more eggs per clutch compared to the Moderate and Control groups. As a result, reproductive output in the High group was 82% higher than that in the Control group and 50% higher than that in the Moderate group. Despite the increase in reproductive activity, there was no difference in adult body condition among the three treatment groups. There was no significant difference in hatchling length between the treatment groups, but larvae from the High CO2 group had smaller yolks than Controls. This study provides the first evidence of the potential effects of ocean acidification on key reproductive attributes of marine fishes and, contrary to expectations, demonstrates an initially stimulatory (hormetic) effect in response to increased pCO2. However, any long-term consequences of increased reproductive effort on individuals or populations remain to be determined. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_826455 |
| institution | PANGAEA |
| language | en |
| publishDate | 2013 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Seawater carbonate chemistry and reproduction of a coral reef fish in a laboratory experiment Miller, Garielle M Watson, Sue-Ann McCormick, Mark I Munday, Philip L Alkalinity, total; Alkalinity, total, standard deviation; Amphiprion melanopus; Animalia; Aragonite saturation state; Bicarbonate ion; Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chordata; Clutches per month; Clutches per pair; Clutches per pair, standard error; Coast and continental shelf; Eggs, area; Eggs area, standard error; Eggs per clutch; Eggs per clutch, standard error; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Hatchling length; Hatchling length, standard error; Identification; Laboratory experiment; Mesocosm or benthocosm; Month; Nekton; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH, NBS scale; pH, standard deviation; pH, total scale; Potentiometric titration; Reproduction; Reproductive output per clutch; Reproductive output per clutch, standard error; Salinity; Single species; South Pacific; Species; Temperature, standard deviation; Temperature, water; Treatment; Tropical; Yolk area; Yolk area, standard error Ocean acidification is predicted to negatively impact the reproduction of many marine species, either by reducing fertilization success or diverting energy from reproductive effort. While recent studies have demonstrated how ocean acidification will affect larval and juvenile fishes, little is known about how increasing partial pressure of carbon dioxide (pCO2) and decreasing pH might affect reproduction in adult fishes. We investigated the effects of near-future levels of pCO2 on the reproductive performance of the cinnamon anemonefish, Amphiprion melanopus, from the Great Barrier Reef, Australia. Breeding pairs were held under three CO2 treatments [Current-day Control (430 µatm), Moderate (584 µatm) and High (1032 µatm)] for a 9-month period that included the summer breeding season. Unexpectedly, increased CO2 dramatically stimulated breeding activity in this species of fish. Over twice as many pairs bred in the Moderate (67% of pairs) and High (55%) compared to the Control (27%) CO2 treatment. Pairs in the High CO2 group produced double the number of clutches per pair and 67% more eggs per clutch compared to the Moderate and Control groups. As a result, reproductive output in the High group was 82% higher than that in the Control group and 50% higher than that in the Moderate group. Despite the increase in reproductive activity, there was no difference in adult body condition among the three treatment groups. There was no significant difference in hatchling length between the treatment groups, but larvae from the High CO2 group had smaller yolks than Controls. This study provides the first evidence of the potential effects of ocean acidification on key reproductive attributes of marine fishes and, contrary to expectations, demonstrates an initially stimulatory (hormetic) effect in response to increased pCO2. However, any long-term consequences of increased reproductive effort on individuals or populations remain to be determined. |
| title | Seawater carbonate chemistry and reproduction of a coral reef fish in a laboratory experiment |
| topic | Alkalinity, total; Alkalinity, total, standard deviation; Amphiprion melanopus; Animalia; Aragonite saturation state; Bicarbonate ion; Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chordata; Clutches per month; Clutches per pair; Clutches per pair, standard error; Coast and continental shelf; Eggs, area; Eggs area, standard error; Eggs per clutch; Eggs per clutch, standard error; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Hatchling length; Hatchling length, standard error; Identification; Laboratory experiment; Mesocosm or benthocosm; Month; Nekton; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH, NBS scale; pH, standard deviation; pH, total scale; Potentiometric titration; Reproduction; Reproductive output per clutch; Reproductive output per clutch, standard error; Salinity; Single species; South Pacific; Species; Temperature, standard deviation; Temperature, water; Treatment; Tropical; Yolk area; Yolk area, standard error |
| url | https://doi.org/10.1594/PANGAEA.826455 |