Limited behavioural effects of ocean acidification on a Mediterranean anemone goby (Gobius incognitus) chronically exposed to elevated CO2 levels

Spatafora, Davide, Cattano, Carlo, Aglieri, Giorgio, Quattrocchi, Federico, Turco, Gabriele, Quartararo, Giulia, Dudemaine, Jeanne, Calosi, Piero ORCID: https://orcid.org/0000-0003-3378-2603 et Milazzo, Marco (2022). Limited behavioural effects of ocean acidification on a Mediterranean anemone goby (Gobius incognitus) chronically exposed to elevated CO2 levels. Marine Environmental Research, 181 . p. 105758.

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Résumé

An in situ reciprocal transplant experiment was carried around a volcanic CO2 vent to evaluate the anti-predator responses of an anemone goby species exposed to ambient (∼380 μatm) and high (∼850 μatm) CO2 sites. Overall, the anemone gobies displayed largely unaffected behaviors under high-CO2 conditions suggesting an adaptive potential of Gobius incognitus to ocean acidification (OA) conditions. This is also supported by its 3-fold higher density recorded in the field under high CO2. However, while fish exposed to ambient conditions showed an expected reduction in the swimming activity in the proximity of the predator between the pre- and post-exposure period, no such changes were detected in any of the other treatments where fish experienced acute and long-term high CO2. This may suggest an OA effect on the goby antipredator strategy. Our findings contribute to the ongoing debate over the need for realistic predictions of the impacts of expected increased CO2 concentration on fish, providing evidence from a natural high CO2 system. -- Keywords : Behaviour ; Gobiidae ; Predation ; Shelter use ; Cnidaria ; Global change ; Risk assessment ; CO2 seeps.

Type de document :	Article
Validation par les pairs :	Oui
Version du document déposé :	Post-print (version corrigée et acceptée)
Départements et unités départementales :	Département de biologie, chimie et géographie
Déposé par :	DIUQAR UQAR
Date de dépôt :	14 nov. 2023 15:59
Dernière modification :	14 nov. 2023 15:59
URI :	https://semaphore.uqar.ca/id/eprint/2649

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