Impact of ocean acidification in the metabolism and swimming behavior of the dolphinfish (Coryphaena hippurus) early larvae

Since the industrial revolution, [CO2]atm has increased from 280 µatm to levels now exceeding 380 µatm and is expected to rise to 730-1,020 µatm by the end of this century. The consequent changes in the ocean's chemistry (e.g., lower pH and availability of the carbonate ions) are expected to po...

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Bibliographic Details
Main Authors: Pimentel, Marta, Pegado, Maria, Repolho, Tiago, Rosa, Rui
Format: Dataset
Language:English
Published: PANGAEA 2014
Subjects:
Alkalinity
total
standard deviation
Animalia
Aragonite saturation state
Behaviour
Bicarbonate ion
Bottles or small containers/Aquaria (<20 L)
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
Coryphaena hippurus
Fugacity of carbon dioxide (water) at sea surface temperature (wet air)
Laboratory experiment
Laboratory strains
Larvae
Nekton
Not applicable
OA-ICC
Ocean Acidification International Coordination Centre
Orientation frequency
Partial pressure of carbon dioxide
Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)
Pelagos
pH
Reproduction
Ocean acidification
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.836007
https://doi.org/10.1594/PANGAEA.836007
Description
Summary:Since the industrial revolution, [CO2]atm has increased from 280 µatm to levels now exceeding 380 µatm and is expected to rise to 730-1,020 µatm by the end of this century. The consequent changes in the ocean's chemistry (e.g., lower pH and availability of the carbonate ions) are expected to pose particular problems for marine organisms, especially in the more vulnerable early life stages. The aim of this study was to investigate how the future predictions of ocean acidification may compromise the metabolism and swimming capabilities of the recently hatched larvae of the tropical dolphinfish (Coryphaena hippurus). Here, we show that the future environmental hypercapnia (delta pH 0.5; 0.16 % CO2, ~1,600 µatm) significantly (p < 0.05) reduced oxygen consumption rate up to 17 %. Moreover, the swimming duration and orientation frequency also decreased with increasing pCO2 (50 and 62.5 %, respectively). We argue that these hypercapnia-driven metabolic and locomotory challenges may potentially influence recruitment, dispersal success, and the population dynamics of this circumtropical oceanic top predator.

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