Ocean acidification affects fish spawning but not paternity at CO2 seeps

DOI

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.

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2015) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation is 2016-10-31.

Supplement to: Milazzo, Marco; Cattano, Carlo; Alonzo, Suzanne H; Foggo, A; Gristina, Michele; Rodolfo-Metalpa, Riccardo; Sinopoli, Mauro; Spatafora, Davide; Stiver, Kelly A; Hall-Spencer, Jason M (2016): Ocean acidification affects fish spawning but not paternity at CO2 seeps. Proceedings of the Royal Society B-Biological Sciences, 283(1835), 20161021

Identifier
DOI https://doi.org/10.1594/PANGAEA.867446
Related Identifier https://doi.org/10.1098/rspb.2016.1021
Related Identifier https://cran.r-project.org/package=seacarb
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.867446
Provenance
Creator Milazzo, Marco; Cattano, Carlo ORCID logo; Alonzo, Suzanne H ORCID logo; Foggo, A; Gristina, Michele; Rodolfo-Metalpa, Riccardo; Sinopoli, Mauro ORCID logo; Spatafora, Davide ORCID logo; Stiver, Kelly A ORCID logo; Hall-Spencer, Jason M ORCID logo
Publisher PANGAEA
Contributor Yang, Yan
Publication Year 2016
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 749 data points
Discipline Earth System Research
Spatial Coverage (13.258W, 38.206S, 14.964E, 38.421N)