Impact of inorganic UV filters contained in sunscreen products on tropical stony corals (Acropora spp.)
| Autor: | Francesca Marcellini, Ettore Nepote, Cinzia Corinaldesi, Roberto Danovaro, Elisabetta Damiani |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Environmental Engineering Coral bleaching Coral 010501 environmental sciences 01 natural sciences 03 medical and health sciences Symbiosis Animals Environmental Chemistry Acropora Seawater Waste Management and Disposal Sunscreens Coral bleaching Inorganic filters Titanium dioxide Zinc oxide 0105 earth and related environmental sciences Titanium Uv protection geography geography.geographical_feature_category biology Coral Reefs Coral reef Anthozoa biology.organism_classification Pollution 030104 developmental biology Zooxanthellae Environmental chemistry Dinoflagellida Environmental science Sunscreening Agents Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Science of The Total Environment. :1279-1285 |
| ISSN: | 0048-9697 |
| Popis: | Most coral reefs worldwide are threatened by natural and anthropogenic impacts. Among them, the release in seawater of sunscreen products commonly used by tourists to protect their skin againstthe harmful effects of UV radiations, can affect tropical corals causing extensive and rapid bleaching. The use of inorganic (mineral) filters, such as zinc and titanium dioxide (ZnO and TiO2) is increasing due to their broad UV protection spectrum and their limited penetration into the skin.In the present study, we evaluated through field experiments, the impact on the corals Acropora spp. of uncoated ZnO nanoparticles and two modified forms of TiO2 (Eusolex ® T2000 and OptisolTM9 ), largely utilized in commercial sunscreens together with organic filters. Our results demonstrate that uncoated ZnO induces a severe and fast coral bleaching due to the alteration of the symbiosis between coral and zooxanthellae. ZnO also directly affects symbiotic dinoflagellates and stimulates microbial enrichment in the seawater surrounding the corals. Conversely, Eusolex ® T2000 and OptisolTM caused minimal alterations in the symbiotic interactions and did not cause bleaching, resulting more eco-compatible than ZnO. Due to the vulnerability of coral reefs toanthropogenic impacts and global change, our findings underline the need to accurately evaluate theeffect of commercial filters on marine life to minimize or avoid this additional source of impact tothe life and resilience ability of coral reefs. |
| Databáze: | OpenAIRE |
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