title: The effects of water acidification, temperature and salinity on the regenerative capacity of the polychaete Diopatra neapolitana.
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.
authors.affiliation: Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal. Electronic address: adilia@ua.pt.
authors.forename: Adília
authors.initials: A
authors.lastname: Pires
authors.affiliation: Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
authors.forename: Etelvina
authors.initials: E
authors.lastname: Figueira
authors.affiliation: Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
authors.forename: Anthony
authors.initials: A
authors.lastname: Moreira
authors.affiliation: Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
authors.forename: Amadeu M V M
authors.initials: AM
authors.lastname: Soares
authors.affiliation: Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
authors.forename: Rosa
authors.initials: R
authors.lastname: Freitas
mesh_terms: D000818:Animals; D006863:Hydrogen-Ion Concentration; D009026:Mortality; D011077:Polychaeta / Q000254:growth & development / Q000502:physiology*; D012038:Regeneration / Q000502:physiology*; D054712:Salinity; D012623:Seawater / Q000737:chemistry*; D013696:Temperature; D013995:Time
keywords: Biomarker; Body regeneration; Climate change; Polychaetes; Salinity changes; Temperature increase; pH decrease