Ocean acidification affects fish spawning but not paternity at CO2 seeps

6533b881fe1ef96bd12d8bac

RESEARCH PRODUCT

Ocean acidification affects fish spawning but not paternity at CO2 seeps

Marco Milazzo Carlo Cattano Suzanne H Alonzo A Foggo Michele Gristina Riccardo Rodolfo-metalpa Mauro Sinopoli Davide Spatafora Kelly A Stiver Jason M Hall-spencer

subject

Eggs standard error Ocean Acidification International Coordination Centre (OA-ICC)Temperate Registration number of species Identification Salinity Eggs inorganic Alkalinity Experiment Number standard error Dominant male paternity Temperature water Carbon inorganic dissolved Number of individuals Calculated using seacarb after Nisumaa et al 2010 Number of spawning events standard error Aragonite saturation state Fish standard length Chordata Alkalinity total Salinity standard error total CO2 vent Replicates Courtship standard error pH Pelagos Reproduction Symphodus ocellatus Temperature Number Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) standard error dissolved Carbonate ion Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)standard error Individuals standard error Earth System Research Field observation FOS: Medical biotechnology Uniform resource locator link to reference Potentiometric titration Calcite saturation state Location Potentiometric water Number of spawning events Age Uniform resource locator/link to reference Ocean Acidification International Coordination Centre OA ICC Mediterranean Sea Animalia Eggs area Behaviour Type Bicarbonate ion Nekton Eggs area standard error Temperature water standard error Calculated using seacarb after Nisumaa et al. (2010)Species pH standard error Wet mass Dominant male paternity standard error Calculated using CO2SYS Event label Individuals Courtship Carbonate system computation flag standard length Fugacity of carbon dioxide (water) at sea surface temperature (wet air)Carbon Treatment Partial pressure of carbon dioxide water at sea surface temperature wet air Fish Carbon dioxide Single species Fugacity of carbon dioxide water at sea surface temperature wet air Coast and continental shelf

description

Fish exhibit impaired sensory function and altered behaviour at levels of ocean acidification expected to occur owing to anthropogenic carbon dioxide emissions during this century. We provide the first evidence of the effects of ocean acidification on reproductive behaviour of fish in the wild. Satellite and sneaker male ocellated wrasse (Symphodus ocellatus) compete to fertilize eggs guarded by dominant nesting males. Key mating behaviours such as dominant male courtship and nest defence did not differ between sites with ambient versus elevated CO2 concentrations. Dominant males did, however, experience significantly lower rates of pair spawning at elevated CO2 levels. Despite the higher risk of sperm competition found at elevated CO2, we also found a trend of lower satellite and sneaker male paternity at elevated CO2. Given the importance of fish for food security and ecosystem stability, this study highlights the need for targeted research into the effects of rising CO2 levels on patterns of reproduction in wild fish.

year	journal	country	edition	language
2016-01-01

https://dx.doi.org/10.1594/pangaea.867446