Limits...
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.

Show MeSH

Related in: MedlinePlus

Average escape time from a chamber by fish exposed to control water or CO2-enriched water for 20 and 40 days.N = 20 for each treatment. Data are presented as means ± SEM, and p-values indicate statistical significance (t-test).
© Copyright Policy
Related In: Results  -  Collection


getmorefigures.php?uid=PMC3672104&req=5

pone-0065825-g006: Average escape time from a chamber by fish exposed to control water or CO2-enriched water for 20 and 40 days.N = 20 for each treatment. Data are presented as means ± SEM, and p-values indicate statistical significance (t-test).

Mentions: Both control fish and CO2-exposed fish took roughly half a minute to escape the escape chamber at day 20, with no significant effect of treatment (figure 6). At day 40 the CO2-exposed fish took the same amount of time to escape the chamber while the control fish were six times faster (p = 0.007).


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)

Average escape time from a chamber by fish exposed to control water or CO2-enriched water for 20 and 40 days.N = 20 for each treatment. Data are presented as means ± SEM, and p-values indicate statistical significance (t-test).
© Copyright Policy
Related In: Results  -  Collection

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

pone-0065825-g006: Average escape time from a chamber by fish exposed to control water or CO2-enriched water for 20 and 40 days.N = 20 for each treatment. Data are presented as means ± SEM, and p-values indicate statistical significance (t-test).
Mentions: Both control fish and CO2-exposed fish took roughly half a minute to escape the escape chamber at day 20, with no significant effect of treatment (figure 6). At day 40 the CO2-exposed fish took the same amount of time to escape the chamber while the control fish were six times faster (p = 0.007).

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