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Title: Does salinity variation increase synergistic effects of triclosan and carbon nanotubes on Mytilus galloprovincialis? Responses on adult tissues and sperms
Author: De Marchi, Lucia
Freitas, Rosa
Oliva, Matteo
Cuccaro, Alessia
Manzini, Chiara
Tardelli, Federica
Andrade, Madalena
Costa, Marcelo
Leite, Carla
Morelli, Andrea
Chiellini, Federica
Pretti, Carlo
Keywords: Mytilus galloprovincialis
Synergistic effects
Carbon nanotubes
Sperm quality parameters
Oxidative stress
Issue Date: 10-Sep-2020
Publisher: Elsevier
Abstract: The use of carbon nanotubes (CNTs) is rapidly increasing and several scientific studies have addressed their toxicological properties. However, only a very small number of publications have deal with the interaction between CNTs and other molecules. Triclosan (TCS) is an antibacterial agent used in personal care and household products. Commonly detected in aquatic ecosystems, there is a strong evidence that aquatic biota is sensitive to this compound. Aside from emergent pollutants, aquatic organisms are continuously subjected to abiotic variations including salinities. Therefore, the main goal of the present study was to better understand how physio-chemical interactions of CNTs with TCS under different salinity levels (37, 28 and 19) affect the mussel species Mytilus galloprovincialis through the evaluation of biochemical alterations on gametes (sperms) and adult tissues, providing more ecologically relevant information on organisms' responses. The results showed toxicological effects in terms of sperm metabolic activity and intracellular reactive oxygen species production as well as cellular damage and alteration of metabolic capacity at the adult's stage when exposed to both contaminants acting alone and in combination, under tested salinities. Moreover, when the mussels were exposed to the combination of both contaminants, they showed major toxic impacts on both assessed biological levels (adult tissues and sperms) especially under control salinity. This suggests that toxicity upon mixture exposure compared to single-substance exposure may impair mussels' populations, affecting reproduction success and growth.
Peer review: yes
DOI: 10.1016/j.scitotenv.2020.138837
ISSN: 0048-9697
Appears in Collections:CESAM - Artigos
DBio - Artigos

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