Can temperature influence the impacts induced in Mytilus galloprovincialis by neodymium? Comparison between exposure and recovery periods

https://doi.org/10.1016/j.etap.2022.104029Get rights and content
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Highlights

  • Mytilus galloprovincialis accumulate Nd at both temperatures.

  • Neodymium induced oxidative stress and histopathological injuries in gills.

  • Temperature rise induced histopathological injuries and influence the Nd uptake.

  • Neodymium exposure combined with temperature rise did not cause cellular damage.

  • After recovery, mussels presented histopathological and cellular damages.

Abstract

Climate change-associated factors and pollutants, such as rare earth elements (REEs), have been identified as contributors to environmental changes. However, the toxicity resulting from the combination of these stressors has received little attention. Neodymium (Nd) is a REE that has been widely used, and this study aimed to evaluate the responses of Mytilus galloprovincialis to Nd exposure (10 µg/L), under actual (17 °C) and predicted warming conditions (21 °C), after fourteen days of exposure followed by fourteen days of recovery (without Nd), analyzing Nd accumulation, histopathological and biochemical alterations. The results showed that increased temperature and Nd exposure caused histopathological injuries in the gills. Contaminated mussels at 17 °C showed cellular damage, while at 21 °C, mussels were able to avoid cellular damage. After the recovery period, no improvements in gill’s status were found and cellular damage was still present, highlighting the impacts caused by previous exposure to Nd.

Keywords

Rare earth elements
Climate changes
Mussels
Biochemical alterations
Histopathology

Data Availability

Data will be made available on request.

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