Giménez Valéria, Cardoso Paulo, Sá Carina, Patinha Carla, Ferreira da Silva Eduardo, Figueira Etelvina, Pires Adília
Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal.
Centre for Environmental and Marine Studies (CESAM), Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal.
Biology (Basel). 2022 Jul 31;11(8):1153. doi: 10.3390/biology11081153.
Polychaetes are known to be good bioindicators of marine pollution, such as inorganic contamination. Major and trace elements are commonly present in sediment and may be accumulated by polychaetes such as the tubiculous . In this study, individuals were collected in the autumn, winter, spring, and summer of 2018/2019 from the Ria de Aveiro lagoon (western Portugal) to understand how seasonality influences element accumulation. The impact of the interaction of seasonality and elements on oxidative status, energy metabolism, and oxidative damage was also assessed. The obtained results showed that the activity of the antioxidant enzymes catalase, glutathione S-transferases, and non-protein thiol levels were higher in summer and that superoxide dismutase, lipid peroxidation, and electron transport system activity increased in winter. The lowest glycogen levels were observed during spring, and protein carbonylation was the highest during autumn. These results could mainly be related to high temperatures and the bioaccumulation of Al, As, Mn, and Zn. Energy-related parameters increased during spring and autumn, mainly due to the bioaccumulation of the same elements during spring and summer. Lipid damage was higher during winter, which was mainly due to salinity and temperature decreases. Overall, this study demonstrates that seasonality plays a role in element accumulation by polychaetes and that both impact the oxidative status of
多毛纲动物被认为是海洋污染（如无机污染）的良好生物指示物。主要元素和微量元素通常存在于沉积物中，并可能被多毛纲动物（如管栖类）积累。在本研究中，于2018/2019年的秋、冬、春、夏四季从阿威罗里亚德（葡萄牙西部）采集样本，以了解季节性如何影响元素积累。还评估了季节性和元素相互作用对氧化状态、能量代谢和氧化损伤的影响。所得结果表明，抗氧化酶过氧化氢酶、谷胱甘肽S-转移酶的活性以及非蛋白硫醇水平在夏季较高，而超氧化物歧化酶、脂质过氧化和电子传递系统活性在冬季增加。春季观察到糖原水平最低，秋季蛋白质羰基化程度最高。这些结果可能主要与高温以及铝、砷、锰和锌的生物积累有关。与能量相关的参数在春季和秋季增加，主要是由于春季和夏季相同元素的生物积累。冬季脂质损伤较高，这主要是由于盐度和温度降低。总体而言，本研究表明季节性在多毛纲动物的元素积累中起作用，并且两者都会影响氧化状态。
