Seawater carbonate chemistry and gamete quality and window of fertilisation in Atlantic cod ...

• Main Authors: Dahlke, Flemming, Puvanendran, Velmurugu, Mortensen, Atle, Pörtner, Hans-Otto, Storch, Daniela
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Animalia; Chordata; Coast and continental shelf; Gadus morhua; Laboratory experiment; Mesocosm or benthocosm; Nekton; North Atlantic; Pelagos; Polar; Reproduction; FOS Medical biotechnology; Single species; Temperature; Type; Species, unique identification; Species, unique identification URI; Species, unique identification Semantic URI; Identification; Partial pressure of carbon dioxide water at sea surface temperature wet air; Temperature, water; Egg stages; pH; Eggs, diameter; Alkalinity, total; Salinity; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Carbon, inorganic, dissolved; Aragonite saturation state; Calcite saturation state; Experiment; Calculated using seacarb after Nisumaa et al. 2010; Ocean Acidification International Coordination Centre OA-ICC; atlantic cod; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.949249; https://doi.pangaea.de/10.1594/PANGAEA.949249

Impacts of global warming and CO2-related ocean acidification (OA) on fish reproduction may include chronic effects on gametogenesis and gamete quality, as well as acute effects on external fertilisation. Here, temperature thresholds and OA-sensitivity of gametogenesis and fertilisation were investigated in Atlantic cod, Gadus morhua. Three broodstock groups of farmed cod (FC 1-3) were exposed for three months to three maturation conditions (FC 1: Control, 6°C/400 μatm CO2; FC 2: Warming, 9.5°C/400 μatm; FC 3: Warming & OA, 9.5°C/1100 μatm). In addition, a broodstock group of wild cod (WC) was kept at control conditions to compare the acute temperature window of fertilisation with that of farmed cod (FC 1). Fertilisations were conducted in a temperature-gradient table at ten temperatures (between −1.5 and 12°C) and two CO2 levels (400/1100 μatm). In FC 1 and WC, fertilisation success was relatively high between 0.5°C and 11°C (TRange of ~10.5°C), indicating similar gamete quality in farmed and wild ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) 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 by seacarb is 2022-09-30. ...