The extensive use of sunscreen products has led to an increase in the amount of UV filters being detected in marine ecosystems. While the hazards associated with organic UV filters are relatively well-studied, the effects of inorganic UV filters like nano‑titanium dioxide (nano-TiO2) on corals remain unclear. This study investigated the effects of nano-TiO2 UV filters on the fertilization success, embryonic development, and larval survival of the branching coral species Acropora tumida. Our results indicated that nano-TiO2 concentrations ranging from 0.01 mg/L to 10 mg/L had no significant impact on coral fertilization success or embryonic development. However, high concentrations of 5 and 10 mg/L nano-TiO2 significantly reduced larval survival probability compared to control after 4 days exposure. Based on our results, the current environmental concentrations of TiO2 are unlikely to pose serious threats on coral fertilization and larval survival.

中文翻译：

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评价无机紫外线过滤剂二氧化钛纳米颗粒 （nano-TiO2） 对硬化珊瑚 Acropora tumida 早期生命阶段的影响


防晒产品的广泛使用导致在海洋生态系统中检测到的紫外线过滤剂数量增加。虽然与有机紫外线过滤剂相关的危害研究相对充分，但纳米二氧化钛 （nano-TiO2） 等无机紫外线过滤剂对珊瑚的影响仍不清楚。本研究调查了纳米 TiO2 紫外线过滤剂对分枝珊瑚物种 Acropora tumida 受精成功、胚胎发育和幼虫存活的影响。我们的结果表明，纳米 TiO2 浓度范围为 0.01 mg/L 至 10 mg/L 对珊瑚受精成功或胚胎发育没有显着影响。然而，与对照相比，高浓度的 5 和 10 mg/L 纳米 TiO 2 在暴露 4 天后显著降低了幼虫存活概率。根据我们的结果，目前环境浓度的 TiO2 不太可能对珊瑚受精和幼虫生存构成严重威胁。