Elevated CO2 affects anxiety but not a range of other behaviours in juvenile yellowtail kingfish.
Mar Environ Res
; 157: 104863, 2020 May.
Article
en En
| MEDLINE
| ID: mdl-32275516
ABSTRACT
Elevated seawater CO2 can cause a range of behavioural impairments in marine fishes. However, most studies to date have been conducted on small benthic species and very little is known about how higher oceanic CO2 levels could affect the behaviour of large pelagic species. Here, we tested the effects of elevated CO2, and where possible the interacting effects of high temperature, on a range of ecologically important behaviours (anxiety, routine activity, behavioural lateralization and visual acuity) in juvenile yellowtail kingfish, Seriola lalandi. Kingfish were reared from the egg stage to 25 days post-hatch in a full factorial design of ambient and elevated CO2 (~500 and ~1000 µatm pCO2) and temperature (21 °C and 25 °C). The effects of elevated CO2 were trait-specific with anxiety the only behaviour significantly affected. Juvenile S. lalandi reared at elevated CO2 spent more time in the dark zone during a standard black-white test, which is indicative of increased anxiety. Exposure to high temperature had no significant effect on any of the behaviours tested. Overall, our results suggest that juvenile S. lalandi are largely behaviourally tolerant to future ocean acidification and warming. Given the ecological and economic importance of large pelagic fish species more studies investigating the effect of future climate change are urgently needed.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Agua de Mar
/
Conducta Animal
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Dióxido de Carbono
/
Peces
Límite:
Animals
Idioma:
En
Revista:
Mar Environ Res
Asunto de la revista:
BIOLOGIA
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SAUDE AMBIENTAL
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TOXICOLOGIA
Año:
2020
Tipo del documento:
Article
País de afiliación:
Australia