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Phylogeny and Cryptic Diversity of Diopatra (Onuphidae, Annelida) in the East Atlantic
 
 
Article

Interplay of Seasonality, Major and Trace Elements: Impacts on the Polychaete Diopatra neapolitana

1
Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
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Centre for Environmental and Marine Studies (CESAM), Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
3
GEOBIOTEC, Department of Geosciences, University of Aveiro, 3810-193 Aveiro, Portugal
*
Author to whom correspondence should be addressed.
Academic Editors: Andrés Arias, Sarah A. Woodin and Hannelore Paxton
Biology 2022, 11(8), 1153; https://doi.org/10.3390/biology11081153
Received: 23 March 2022 / Revised: 5 July 2022 / Accepted: 21 July 2022 / Published: 31 July 2022
(This article belongs to the Special Issue Diopatra: The Amazing Ecosystem Engineering Polychaetous Annelid)
Coastal systems often serve as sinks for toxic elements, and seasonality has been responsible for many changes in the physical and chemical parameters of waters and sediments, leading to geochemical alterations in aquatic systems and the alteration of element uptake rates in organisms. Diopatra neapolitana worms were collected from five sites of the Ria de Aveiro lagoon in the autumn, winter, spring, and summer of 2018/2019 and were tested to check for differences in the biochemical responses (cell damage, antioxidant enzymes, biotransformation enzymes, and energy-related parameters) among seasons and sites. In general, the results demonstrated that enzyme activities were higher in spring and summer due to high temperatures and element bioaccumulation. Energy-related parameters presented with higher levels in spring and autumn, which was mainly due to element bioaccumulation. Oxidative damage was higher during winter and was related to salinity and decreases in temperature. This study demonstrated that abiotic factors influence the geochemistry of elements and that both significantly affect organism performance in low-contamination systems, such as the Ria de Aveiro lagoon. This knowledge is important to understand how ecological and economically relevant species such as D. neapolitana respond to environmental changes.
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 Diopatra neapolitana. In this study, D. neapolitana 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 D. neapolitana. View Full-Text
Keywords: Diopatra neapolitana; biochemical endpoints; oxidative stress; major elements; trace elements; seasonality Diopatra neapolitana; biochemical endpoints; oxidative stress; major elements; trace elements; seasonality
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MDPI and ACS Style

Giménez, V.; Cardoso, P.; Sá, C.; Patinha, C.; Ferreira da Silva, E.; Figueira, E.; Pires, A. Interplay of Seasonality, Major and Trace Elements: Impacts on the Polychaete Diopatra neapolitana. Biology 2022, 11, 1153. https://doi.org/10.3390/biology11081153

AMA Style

Giménez V, Cardoso P, Sá C, Patinha C, Ferreira da Silva E, Figueira E, Pires A. Interplay of Seasonality, Major and Trace Elements: Impacts on the Polychaete Diopatra neapolitana. Biology. 2022; 11(8):1153. https://doi.org/10.3390/biology11081153

Chicago/Turabian Style

Giménez, Valéria, Paulo Cardoso, Carina Sá, Carla Patinha, Eduardo Ferreira da Silva, Etelvina Figueira, and Adília Pires. 2022. "Interplay of Seasonality, Major and Trace Elements: Impacts on the Polychaete Diopatra neapolitana" Biology 11, no. 8: 1153. https://doi.org/10.3390/biology11081153

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