Seawater carbonate chemistry and survival of Gnathia aureamaculosa

• Main Authors: Paula, José Ricardo, Otjacques, Eve, Hildebrandt, Courtney, Grutter, Alexandra S, Rosa, Rui
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: Alkalinity; total; Animalia; Aragonite saturation state; Arthropoda; 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; Coast and continental shelf; Duration; number of days; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gnathia aureamaculosa; Identification; Laboratory experiment; Lizard_Island; Lizard Island; northern Great Barrier Reef; Mortality/Survival; Number of dead; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; Potentiometric; Registration number of species; Salinity; Single species; South Pacific; Species; Stage; Temperature; water; Treatment; Tropical; Type; Uniform resource locator/link to reference; Width; Zooplankton; Ocean acidification
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.924918; https://doi.org/10.1594/PANGAEA.924918

The juveniles of gnathiid isopods are one of the most common fish ectoparasites in marine habitats and cause deleterious effects on fish by feeding on host blood and lymph. Reef fishes tend to engage in cooperative interactions with cleaning organisms to reduce their ectoparasite load. Ocean acidification (OA) pose multiple threats to marine life. Recently, OA was found to disrupt cleaner fish behaviour in mutualistic cleaning interactions. However, the potential effects of ocean acidification on this common ectoparasite remains unknown. Here, we test if exposure to an acidification scenario predicted by IPCC to the end of the century (RCP 8.5 – 980 μatm pCO2) affects gnathiid survival. Our results show that ocean acidification did not have any effects on gnathiid survival rate during all three juvenile life stages. Thus, we advocate that the need for cleaning interactions will persist in potentially acidified coral reefs. Nevertheless, to better understand gnathiid resilience to ocean acidification, future studies are needed to evaluate ocean acidification impacts on gnathiid reproduction and physiology as well as host-parasite interactions.