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Behavioural disturbances in a temperate fish exposed to sustained high-CO2 levels.

Jutfelt F, Bresolin de Souza K, Vuylsteke A, Sturve J - PLoS ONE (2013)

Bottom Line: Here we show several severe behavioural disturbances, including effects on boldness, exploratory behaviour, lateralisation, and learning in a temperate fish, the three-spined stickleback (Gasterosteus aculeatus).We observed the effects on adult sticklebacks, a species known to be tolerant to other environmental stressors.The severity of disturbances and the possibility of a serious behavioural problem for fish across the globe is cause for concern.

View Article: PubMed Central - PubMed

Affiliation: Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden. fredrik.jutfelt@bioenv.gu.se

ABSTRACT
As atmospheric CO2 levels rise, the CO2 concentration in ocean surface waters increases through a process commonly referred to as ocean acidification. Recently, surprising behavioural modifications has been detected in the early life stages of tropical coral reef fish exposed to ocean acidification-relevant CO2 concentrations, but it has been unclear if this effect could occur in temperate waters. Here we show several severe behavioural disturbances, including effects on boldness, exploratory behaviour, lateralisation, and learning in a temperate fish, the three-spined stickleback (Gasterosteus aculeatus). The behavioural effects were consistent throughout the exposure period and increased in effect size with exposure time. We observed the effects on adult sticklebacks, a species known to be tolerant to other environmental stressors. Our findings suggest that behavioural abnormalities that stem from CO2 exposure are not restricted to sensitive tropical species or early life stages and may therefore affect fish on a global scale. The severity of disturbances and the possibility of a serious behavioural problem for fish across the globe is cause for concern.

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Weight at experiment start and finish (day 43).Control fish in blue and CO2-exposed fish in orange. N = 50 for each treatment. Data is shown as means ± SEM.
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pone-0065825-g002: Weight at experiment start and finish (day 43).Control fish in blue and CO2-exposed fish in orange. N = 50 for each treatment. Data is shown as means ± SEM.

Mentions: The fish gained weight during the experiment (Figure 2) and the treatment did not significantly affect final weight (p = 0.14). Total mortality over the whole experimental period was high as expected in post-spawning females: 36% in the control group and 28% in the CO2 group, but was not affected by CO2-exposure (p = 0.59).


Behavioural disturbances in a temperate fish exposed to sustained high-CO2 levels.

Jutfelt F, Bresolin de Souza K, Vuylsteke A, Sturve J - PLoS ONE (2013)

Weight at experiment start and finish (day 43).Control fish in blue and CO2-exposed fish in orange. N = 50 for each treatment. Data is shown as means ± SEM.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3672104&req=5

pone-0065825-g002: Weight at experiment start and finish (day 43).Control fish in blue and CO2-exposed fish in orange. N = 50 for each treatment. Data is shown as means ± SEM.
Mentions: The fish gained weight during the experiment (Figure 2) and the treatment did not significantly affect final weight (p = 0.14). Total mortality over the whole experimental period was high as expected in post-spawning females: 36% in the control group and 28% in the CO2 group, but was not affected by CO2-exposure (p = 0.59).

Bottom Line: Here we show several severe behavioural disturbances, including effects on boldness, exploratory behaviour, lateralisation, and learning in a temperate fish, the three-spined stickleback (Gasterosteus aculeatus).We observed the effects on adult sticklebacks, a species known to be tolerant to other environmental stressors.The severity of disturbances and the possibility of a serious behavioural problem for fish across the globe is cause for concern.

View Article: PubMed Central - PubMed

Affiliation: Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden. fredrik.jutfelt@bioenv.gu.se

ABSTRACT
As atmospheric CO2 levels rise, the CO2 concentration in ocean surface waters increases through a process commonly referred to as ocean acidification. Recently, surprising behavioural modifications has been detected in the early life stages of tropical coral reef fish exposed to ocean acidification-relevant CO2 concentrations, but it has been unclear if this effect could occur in temperate waters. Here we show several severe behavioural disturbances, including effects on boldness, exploratory behaviour, lateralisation, and learning in a temperate fish, the three-spined stickleback (Gasterosteus aculeatus). The behavioural effects were consistent throughout the exposure period and increased in effect size with exposure time. We observed the effects on adult sticklebacks, a species known to be tolerant to other environmental stressors. Our findings suggest that behavioural abnormalities that stem from CO2 exposure are not restricted to sensitive tropical species or early life stages and may therefore affect fish on a global scale. The severity of disturbances and the possibility of a serious behavioural problem for fish across the globe is cause for concern.

Show MeSH
Related in: MedlinePlus