TY - JOUR
T1 - Severe tissue damage in Atlantic cod larvae under increasing ocean acidification
AU - Frommel, Andrea Y.
AU - Maneja, Rommel
AU - Lowe, David
AU - Malzahn, Arne M.
AU - Geffen, Audrey J.
AU - Folkvord, Arild
AU - Piatkowski, Uwe
AU - Reusch, Thorsten B.H.
AU - Clemmesen, Catriona
N1 - Funding Information:
Funding was provided through the European Community’s Seventh Framework Programme (FP7/2007-2013) ‘European Project on Ocean Acidification’ (EPOCA, grant agreement N211384), the European Marie Curie Initial Training Network ‘Calcification of Marine Organisms’ (CalMarO) and the project by German Ministry for Education and Research (BMBF) ‘Biological Impacts of Ocean ACIDification’ (BIOACID). The experiments were conducted at the Norwegian National Mesocosm Centre, Espegrend, in cooperation with the University of Bergen. The authors are grateful to R. Bellerby and his lab for assistance with the carbonate chemistry and to H. Otteraa, V. Lokøy, F. Midtøy and C. Eizaguirre for various support.
PY - 2012/1
Y1 - 2012/1
N2 - Ocean acidification, caused by increasing atmospheric concentrations of CO 2 (refs.1-3), is one of the most critical anthropogenicthreats to marine life. Changes in seawater carbonate chemistry have the potential to disturb calcification, acid-base regulation, blood circulation and respiration, as well as the nervous system of marine organisms, leading to long-term effects such as reduced growth rates and reproduction. In teleost fishes, early life-history stages are particularly vulnerable as they lack specialized internal pH regulatory mechanisms. So far, impacts of relevant CO 2 concentrations on larval fish have been found in behaviour and otolith size, mainly in tropical, non-commercial species. Here we show detrimental effects of ocean acidification on the development of a mass-spawning fish species of high commercial importance. We reared Atlantic cod larvae at three levels of CO 2, (1) present day, (2) end of next century and (3) an extreme, coastal upwelling scenario, in a long-term (months) mesocosm experiment. Exposure to CO 2 resulted in severe to lethal tissue damage in many internal organs, with the degree of damage increasing with CO 2 concentration. As larval survival is the bottleneck to recruitment, ocean acidification has the potential to act as an additional source of natural mortality, affecting populations of already exploited fish stocks.
AB - Ocean acidification, caused by increasing atmospheric concentrations of CO 2 (refs.1-3), is one of the most critical anthropogenicthreats to marine life. Changes in seawater carbonate chemistry have the potential to disturb calcification, acid-base regulation, blood circulation and respiration, as well as the nervous system of marine organisms, leading to long-term effects such as reduced growth rates and reproduction. In teleost fishes, early life-history stages are particularly vulnerable as they lack specialized internal pH regulatory mechanisms. So far, impacts of relevant CO 2 concentrations on larval fish have been found in behaviour and otolith size, mainly in tropical, non-commercial species. Here we show detrimental effects of ocean acidification on the development of a mass-spawning fish species of high commercial importance. We reared Atlantic cod larvae at three levels of CO 2, (1) present day, (2) end of next century and (3) an extreme, coastal upwelling scenario, in a long-term (months) mesocosm experiment. Exposure to CO 2 resulted in severe to lethal tissue damage in many internal organs, with the degree of damage increasing with CO 2 concentration. As larval survival is the bottleneck to recruitment, ocean acidification has the potential to act as an additional source of natural mortality, affecting populations of already exploited fish stocks.
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U2 - 10.1038/nclimate1324
DO - 10.1038/nclimate1324
M3 - Article
AN - SCOPUS:84857496400
SN - 1758-678X
VL - 2
SP - 42
EP - 46
JO - Nature Climate Change
JF - Nature Climate Change
IS - 1
ER -