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Title: The effects of water acidification, temperature and salinity on the regenerative capacity of the polychaete Diopatra neapolitana
Author: Pires, Adília
Figueira, Etelvina
Moreira, Anthony
Soares, Amadeu M. V. M.
Freitas, Rosa
Keywords: Polychaetes
Body regeneration
Climate change
pH decrease
Temperature increase
Salinity changes
Issue Date: 2015
Publisher: Elsevier
Abstract: Changes in seawater pH, temperature and salinity are expected to occur in the near future, which can be a threat to aquatic systems, mainly for marine coastal areas, and their inhabiting species. Hence, the present study proposes to evaluate the effects of temperature shifts, pH decrease and salinity changes in the tissue's regenerative capacity of the polychaete Diopatra neapolitana. This study evidenced that D. neapolitana individuals exposed to lower pH exhibited a significantly lower capacity to regenerate their body, while with the increase of temperature individuals showed a higher capacity to regenerate their tissues. Furthermore, the present work demonstrated that individuals exposed to salinities 28 and 35 did not present significant differences between them, while salinities 21 and 42 negatively influenced the regenerative capacity of D. neapolitana. At the end of regeneration, comparing all conditions, high salinity (42) seemed to have a greater impact on the regenerative capacity of individuals than the other factors, since under this condition individuals took longer to completely regenerate. Overall, this study demonstrated that variations in abiotic factors can strongly affect D. neapolitana's performance.
Peer review: yes
DOI: 10.1016/j.marenvres.2015.03.002
ISSN: 0141-1136
Appears in Collections:CESAM - Artigos
DBio - Artigos

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