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Juvenile Atlantic cod behavior appears robust to near-future CO2 levels
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- Jutfelt, Fredrik, 1975 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences
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- Hedgärde, Maria, 1986 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences
- (creator_code:org_t)
- 2015-05-23
- 2015
- English.
- In: Frontiers in Zoology. - : Springer Science and Business Media LLC. - 1742-9994. ; 12:11
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Background: Ocean acidification caused by the anthropogenic release of CO2 is considered a major threat to marine ecosystems. One unexpected impact of elevated water CO2 levels is that behavioral alterations may occur in tropical reef fish and certain temperate fish species. These effects appear to alter many different types of sensory and cognitive functions; if widespread and persistent, they have the potential to cause ecosystem changes. Methods: We investigated whether economically and ecologically important Atlantic cod also display behavioral abnormalities by exposing 52 juvenile cod to control conditions (500 mu atm, duplicate tanks) or an end-of-the-century ocean acidification scenario (1000 mu atm, duplicate tanks) for one month, during which time the fish were examined for a range of behaviors that have been reported to be affected by elevated CO2 in other fish. The behaviors were swimming activity, as measured by number of lines crossed per minute, the emergence from shelter, determined by how long it took the fish to exit a shelter after a disturbance, relative lateralization (a measure of behavioral turning side preference), and absolute lateralization (the strength of behavioral symmetry). Results: We found no effect of CO2 treatment on any of the four behaviors tested: activity (F = 1.61, p = 0.33), emergence from shelter (F = 0.13, p = 0.76), relative lateralization (F = 2.82, p = 0.50), and absolute lateralization (F = 0.80, p = 0.26). Conclusion: Our results indicate that the behavior of Atlantic cod could be resilient to the impacts of near-future levels of water CO2.
Subject headings
- NATURVETENSKAP -- Biologi -- Zoologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Zoology (hsv//eng)
Keyword
- Carbon dioxide
- Teleost
- Climate change
- Boldness
- Teleost
- Lateralization
- Behavior
- Gadus morhua
- ELEVATED CARBON-DIOXIDE
- OCEAN ACIDIFICATION
- GADUS-MORHUA
- CLIMATE-CHANGE
- FISH
- LATERALIZATION
- POPULATIONS
- PERFORMANCE
- PREDATOR
- IMPACTS
- Zoology
Publication and Content Type
- ref (subject category)
- art (subject category)
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