Responses of pink salmon to CO2-induced aquatic acidification

Ou, Michelle; Hamilton, Trevor J.; Eom, Junho; Lyall, Emily M.; Gallup, Joshua; Jiang, Amy; Lee, Jason; Close, David A.; Yun, Sang-Seon; Brauner, Colin J.

doi:10.1038/nclimate2694

Cited by 186 publications

(213 citation statements)

References 55 publications

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“…In most cases, gabazine reversed the effect of elevated CO 2 and restored normal behaviour. Gabazine also significantly alters the behaviour of control rockfish and pink salmon (Ou et al, 2015). However, no other study found any effect of gabazine on behaviour (Chivers et al, 2014;Lai et al, 2015;Lopes et al, 2016;Munday et al, 2016;Nilsson et al, 2012;Watson et al, 2014) or visual processing (Chung et al, 2014) in control fish.…”

Section: Pharmacological Considerationsmentioning

confidence: 92%

Acid–base physiology, neurobiology and behaviour in relation to CO2-induced ocean acidification

Tresguerres

Hamilton

2017

Journal of Experimental Biology

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Experimental exposure to ocean and freshwater acidification affects the behaviour of multiple aquatic organisms in laboratory tests. One proposed cause involves an imbalance in plasma chloride and bicarbonate ion concentrations as a result of acid-base regulation, causing the reversal of ionic fluxes through GABA A receptors, which leads to altered neuronal function. This model is exclusively based on differential effects of the GABA A receptor antagonist gabazine on control animals and those exposed to elevated CO 2 . However, direct measurements of actual chloride and bicarbonate concentrations in neurons and their extracellular fluids and of GABA A receptor properties in aquatic organisms are largely lacking. Similarly, very little is known about potential compensatory mechanisms, and about alternative mechanisms that might lead to ocean acidificationinduced behavioural changes. This article reviews the current knowledge on acid-base physiology, neurobiology, pharmacology and behaviour in relation to marine CO 2 -induced acidification, and identifies important topics for future research that will help us to understand the potential effects of predicted levels of aquatic acidification on organisms.

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Section: Pharmacological Considerationsmentioning

confidence: 92%

Acid–base physiology, neurobiology and behaviour in relation to CO2-induced ocean acidification

Tresguerres

Hamilton

2017

Journal of Experimental Biology

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“…These behavioral modifications, as ecological theory predicts, increase predation risk and mortality (Munday et al, 2010;Brodin et al, 2013;Klaminder et al, 2014). Therefore, GBMs as the result of changes in water chemistry could severely decrease marine fish populations in the near future (Munday et al, 2010;Ou et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Drug-Induced Behavioral Changes: Using Laboratory Observations to Predict Field Observations

Klaminder

Hellström

Fahlman

et al. 2016

Front. Environ. Sci.

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Behavioral assays constitute important research tools when assessing how fish respond to environmental change. However, it is unclear how behavioral modifications recorded in laboratory assays are expressed in natural ecosystems, a limitation that makes it difficult to evaluate the predictive power of laboratory-based measurements. In this study, we hypothesized that exposure to a benzodiazepine (i.e., oxazepam) increases boldness and activity in laboratory assays as well as in field assays-that is, laboratory results can be used to predict field results. Moreover, we expected the modified behavior to affect other important ecological measures such as habitat selection and home range. To test our hypothesis, we exposed European perch (Perca fluviatilis) to oxazepam and measured subsequent changes in behavioral trials both in laboratory assays and in a lake ecosystem populated with a predatory fish species, pike (Esox lucius). In the lake, the positions of both perch and pike were tracked every 3 min for a month using acoustic telemetry. In the laboratory assay, the oxazepam-exposed perch were bolder and more active than the non-exposed perch. In the lake assay, the oxazepam-exposed perch were also more bold and active, had a larger home range, and used pelagic habitats more than the non-exposed perch. We conclude that ecotoxicological behavioral assays are useful for predicting the effects of exposure in natural systems. However, although individual responses to exposure were similar in both the laboratory and field trials, effects were more obvious in the field study, mainly due to reduced variability in the behavioral measures from the lake. Hence, short-term behavioral assays may fail to detect all the effects expressed in natural environments. Nevertheless, our study clearly demonstrates that behavioral modifications observed in laboratory settings can be used to predict how fish perform in aquatic ecosystems.

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“…pH (Pörtner et al, 2004). (Mustelus canis), (Oncorhynchus gorbuscha) (Gasterosteus aculeatus) , , (Pörtner et al, 2004;Dixson et al, 2015;Ou et al, 2015;Lai et al, 2015). , , (Arrigo, 2007).…”

Section: 서 론unclassified

Physiological Responses of Gray Mullet Mugil cephalus to Low-pH Water

Moon¹,

Park²,

Park³

et al. 2017

Korean Journal of Fisheries and Aquatic Sciences

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We examined changes in the physiological responses of gray mullet Mugil cephalus exposed to acidic seawater (pH 6.0, 6.5, 7.0) and normal seawater (pH 8.0, control) for 15 days. As pH decreased, survival rate and body weight also decreased. Levels of aminotransferase, total protein and triglycerides also differed significantly with changes in pH, presumably due to stress caused by exposure to acidic water. The level of osmotic pressure was significantly higher in the pH 6.0 group than in other groups. Superoxide dismutase was significantly higher in the pH 6.5 and 7.0 groups than in the pH 8.0 group, and glutathione level was lowest in the pH 6.0 group. We conclude that decreasing the pH level of seawater induces a stress response in fish, damaging their ability to control their hematological and osmotic pressure. Antioxidant enzymes are generally sensitive to osmotic stress; in this study, antioxidant activity significantly changed with pH level. These results indicate that physiological stress induced by exposure to acidification reduces survival rates and inhibits growth in M. cephalus.

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Responses of pink salmon to CO2-induced aquatic acidification

Cited by 186 publications

References 55 publications

Acid–base physiology, neurobiology and behaviour in relation to CO2-induced ocean acidification

Acid–base physiology, neurobiology and behaviour in relation to CO2-induced ocean acidification

Drug-Induced Behavioral Changes: Using Laboratory Observations to Predict Field Observations

Physiological Responses of Gray Mullet Mugil cephalus to Low-pH Water

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