Experimental conditions, respiration rates of permeabilized heart fibres and biometrical data of European seabass Dicentrarchus labrax ...

• Main Authors: Howald, Sarah, Cominassi, Louise, LeBayon, Nicolas, Claireaux, Guy, Mark, Felix Christopher
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2020
• Subjects: Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.925193; https://doi.pangaea.de/10.1594/PANGAEA.925193

The world's oceans are acidifying and warming as a result of increasing atmospheric CO2 concentrations. The thermal tolerance of fish greatly depends on the cardiovascular ability to supply the tissues with oxygen. The highly oxygen-dependent heart mitochondria thus might play a key role in shaping an organism's tolerance to temperature. The present study aimed to investigate the effects of acute and chronic warming on the respiratory capacity of European sea bass (Dicentrarchus labrax L.) heart mitochondria.Broodstock fish were caught in the Gulf of Morbihan, France. Larvae were raised at the aquaculture facility Aquastream (Ploemeur-Lorient, France) and obtained at 2 dph (20 January 2016). European sea bass were reared in the laboratory in six ocean acidification and warming (OAW) conditions: two temperatures (warm and cold life condition) and three PCO2 conditions (control, Δ500 and Δ1000). Conditions were chosen to follow the predictions of the IPCC for the next 130 years: ΔT = 5°C and ΔPCO2 = 500 and ...