Pires Adília, Figueira Etelvina, Moreira Anthony, Soares Amadeu M V M, Freitas Rosa
Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
Mar Environ Res. 2015 May;106:30-41. doi: 10.1016/j.marenvres.2015.03.002. Epub 2015 Mar 3.
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.
预计在不久的将来海水的pH值、温度和盐度将会发生变化，这可能会对水生系统构成威胁，主要是对海洋沿海地区及其栖息物种。因此，本研究建议评估温度变化、pH值降低和盐度变化对多毛纲动物那不勒斯海蚯蚓组织再生能力的影响。这项研究表明，暴露在较低pH值环境下的那不勒斯海蚯蚓个体身体再生能力显著降低，而随着温度升高，个体组织再生能力增强。此外，目前的研究表明，暴露在盐度为28和35环境下的个体之间没有显著差异，而盐度为21和42则对那不勒斯海蚯蚓的再生能力产生负面影响。在再生结束时，比较所有条件，高盐度（42）似乎比其他因素对个体再生能力的影响更大，因为在这种条件下个体完全再生所需的时间更长。总体而言，这项研究表明非生物因素的变化会强烈影响那不勒斯海蚯蚓的表现。
