Divergent responses of Atlantic cod to ocean acidification and food limitation

© 2018 John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 25(2019), 3 vom: 18. März, Seite 839-849
1. Verfasser: Stiasny, Martina H (VerfasserIn)
Weitere Verfasser: Sswat, Michael, Mittermayer, Felix H, Falk-Petersen, Inger-Britt, Schnell, Nalani K, Puvanendran, Velmurugu, Mortensen, Atle, Reusch, Thorsten B H, Clemmesen, Catriona
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Gadus morhua RNA/DNA ratios early life stages energy limitation food regimes gill development histology laboratory experiment mehr... lipid content ossification Carbon Dioxide 142M471B3J
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520 |a In order to understand the effect of global change on marine fishes, it is imperative to quantify the effects on fundamental parameters such as survival and growth. Larval survival and recruitment of the Atlantic cod (Gadus morhua) were found to be heavily impaired by end-of-century levels of ocean acidification. Here, we analysed larval growth among 35-36 days old surviving larvae, along with organ development and ossification of the skeleton. We combined CO2 treatments (ambient: 503 µatm, elevated: 1,179 µatm) with food availability in order to evaluate the effect of energy limitation in addition to the ocean acidification stressor. As expected, larval size (as a proxy for growth) and skeletogenesis were positively affected by high food availability. We found significant interactions between acidification and food availability. Larvae fed ad libitum showed little difference in growth and skeletogenesis due to the CO2 treatment. Larvae under energy limitation were significantly larger and had further developed skeletal structures in the elevated CO2 treatment compared to the ambient CO2 treatment. However, the elevated CO2 group revealed impairments in critically important organs, such as the liver, and had comparatively smaller functional gills indicating a mismatch between size and function. It is therefore likely that individual larvae that had survived acidification treatments will suffer from impairments later during ontogeny. Our study highlights important allocation trade-off between growth and organ development, which is critically important to interpret acidification effects on early life stages of fish 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Gadus morhua 
650 4 |a RNA/DNA ratios 
650 4 |a early life stages 
650 4 |a energy limitation 
650 4 |a food regimes 
650 4 |a gill development 
650 4 |a histology 
650 4 |a laboratory experiment 
650 4 |a lipid content 
650 4 |a ossification 
650 7 |a Carbon Dioxide  |2 NLM 
650 7 |a 142M471B3J  |2 NLM 
700 1 |a Sswat, Michael  |e verfasserin  |4 aut 
700 1 |a Mittermayer, Felix H  |e verfasserin  |4 aut 
700 1 |a Falk-Petersen, Inger-Britt  |e verfasserin  |4 aut 
700 1 |a Schnell, Nalani K  |e verfasserin  |4 aut 
700 1 |a Puvanendran, Velmurugu  |e verfasserin  |4 aut 
700 1 |a Mortensen, Atle  |e verfasserin  |4 aut 
700 1 |a Reusch, Thorsten B H  |e verfasserin  |4 aut 
700 1 |a Clemmesen, Catriona  |e verfasserin  |4 aut 
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773 1 8 |g volume:25  |g year:2019  |g number:3  |g day:18  |g month:03  |g pages:839-849 
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