Evidences on alterations in skeleton composition and mineralization in a site-attached fish under naturally acidified conditions in a shallow CO2 vent

Background: Ocean acidification may affect fish mineralized structures (i.e. otoliths and skeleton). Methods: Here,we compared the elemental composition of muscle and skeleton and themineral features of skeleton in the site-attached fish Gobius bucchichi naturally exposed to high pCO2/lowpH conditio...

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Bibliographic Details
Published in:Science of The Total Environment
Main Authors: Mirasole, Alice, Scopelliti, Giovanna, Tramati, Cecilia, Signa, Geraldina, Mazzola, Antonio, Vizzini, Salvatrice
Format: Article in Journal/Newspaper
Language:English
Published: 2021
Subjects:
Skeletal structure
Skeletal composition
Gobius bucchichi
Metals bioaccumulation
Infrared spectroscopy
Ocean acidification
Settore BIO/07 - Ecologia
Settore GEO/06 - Mineralogia
Online Access:http://hdl.handle.net/10447/472788
https://doi.org/10.1016/j.scitotenv.2020.143309
Description
Summary:Background: Ocean acidification may affect fish mineralized structures (i.e. otoliths and skeleton). Methods: Here,we compared the elemental composition of muscle and skeleton and themineral features of skeleton in the site-attached fish Gobius bucchichi naturally exposed to high pCO2/lowpH conditions in a shallow CO2 vent with fish of the same species exposed to normal pH. Results: Overall, no skeleton malformations were found in both pH conditions, but among-site differences were found in the elemental composition. Interestingly, higher Ca/P values, inducing a moderate skeleton maturation, were found in fish exposed to acidified conditions than in controls. Conclusion: Our findings suggest that ocean acidification may play a significant role in physiological processes related to mineralization, fostering skeleton pre-aging.

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