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Title: European sea bass show behavioural resilience to near-future ocean acidification

Ocean acidification (OA)-caused by rising concentrations of carbon dioxide (CO 2)-is thought to be a major threat to marine ecosystems and has been shown to induce behavioural alterations in fish. Here we show behavioural resilience to near-future OA in a commercially important and migratory marine finfish, the Sea bass (Dicentrarchus labrax). Sea bass were raised from eggs at 19 °C in ambient or near-future OA (1000 μatm pCO 2) conditions and n = 270 fish were observed 59-68 days post-hatch using automated tracking from video. Fish reared under ambient conditions, OA conditions, and fish reared in ambient conditions but tested in OA water showed statistically similar movement patterns, and reacted to their environment and interacted with each other in comparable ways. Thus our findings indicate behavioural resilience to near-future OA in juvenile sea bass. Moreover, simulated agent-based models indicate that our analysis methods are sensitive to subtle changes in fish behaviour. Lastly, it is now important to determine whether the absences of any differences persist under more ecologically relevant circumstances and in contexts which have a more direct bearing on individual fitness.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [5] ; ORCiD logo [6]
  1. Swansea Univ., Singleton Park, Swansea (United Kingdom). College of Science, Dept. of Biosciences. College of Science, Dept. of Biosciences; Swansea Univ., Swansea (United Kingdom). College of Engineering
  2. Swansea Univ., Singleton Park (United Kingdom). College of Science, Dept. of Biosciences
  3. Spanish National Research Council (CSIC), Madrid (Spain). Inst. Cajal; Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Physics
  4. Spanish National Research Council (CSIC), Madrid (Spain). Inst. Cajal; Champalimaud Center for the Unknown, Lisbon (Portugal)
  5. Swansea Univ., Swansea (United Kingdom). College of Engineering
  6. Swansea Univ., Singleton Park, Swansea (United Kingdom). College of Science, Dept. of Biosciences
Publication Date:
Grant/Contract Number:
EP\M00061\1; NE/H016600/3; NE/H01750X/1; FU-985/1–1
Type:
Accepted Manuscript
Journal Name:
Royal Society Open Science
Additional Journal Information:
Journal Volume: 3; Journal Issue: 11; Journal ID: ISSN 2054-5703
Research Org:
Swansea Univ., Singleton Park, Swansea (United Kingdom)
Sponsoring Org:
United Kingdom Dept. of Energy and Climate Change (DECC)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; Dicentrarchus labrax; environmental change; fisheries; motion tracking; social behaviour
OSTI Identifier:
1376051