This study aimed to assess the combined effects of ocean acidification (OA) and pollution to the polychaete Syllis prolifera inhabiting the CO2 vent system of the Castello Aragonese (Ischia Island, Italy). We investigated the basal activities of antioxidant enzymes in organisms from the acidified site and from an ambient-pH control site in two different periods of the year. Results showed a limited influence of acidified conditions on the functionality of the antioxidant system. We then investigated the responsiveness of individuals living inside the CO2 vent compared to those from the control to face exposure to acetone and copper. Results highlighted a higher susceptibility of organisms from the vent to acetone and a different response of antioxidant enzymes in individuals from the two sites. Conversely, a higher tolerance to copper was observed in polychaetes from the acidified-site with respect to controls, but any significant oxidative stress was induced at sublethal concentrations.

Surviving in a changing ocean. Tolerance to acidification might affect the susceptibility of polychaetes to chemical contamination / M. Munari, A. Chiarore, S.G. Signorini, A. Cannavacciuolo, M. Nannini, S. Magni, A. Binelli, M.C. Gambi, C. Della Torre. - In: MARINE POLLUTION BULLETIN. - ISSN 0025-326X. - 181:(2022 Aug), pp. 113857.1-113857.11. [10.1016/j.marpolbul.2022.113857]

Surviving in a changing ocean. Tolerance to acidification might affect the susceptibility of polychaetes to chemical contamination

S.G. Signorini;S. Magni;A. Binelli;C. Della Torre
2022-08

Abstract

This study aimed to assess the combined effects of ocean acidification (OA) and pollution to the polychaete Syllis prolifera inhabiting the CO2 vent system of the Castello Aragonese (Ischia Island, Italy). We investigated the basal activities of antioxidant enzymes in organisms from the acidified site and from an ambient-pH control site in two different periods of the year. Results showed a limited influence of acidified conditions on the functionality of the antioxidant system. We then investigated the responsiveness of individuals living inside the CO2 vent compared to those from the control to face exposure to acetone and copper. Results highlighted a higher susceptibility of organisms from the vent to acetone and a different response of antioxidant enzymes in individuals from the two sites. Conversely, a higher tolerance to copper was observed in polychaetes from the acidified-site with respect to controls, but any significant oxidative stress was induced at sublethal concentrations.
Ocean acidification; Syllis prolifera; Oxidative stress; Acetone; Copper; CO2 vents;
Settore BIO/07 - Ecologia
21-giu-2022
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/932061
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