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- Title
Toxicopathological Effects of the Sunscreen UV Filter, Oxybenzone (Benzophenone-3), on Coral Planulae and Cultured Primary Cells and Its Environmental Contamination in Hawaii and the U.S. Virgin Islands.
- Authors
Downs, C.; Kramarsky-Winter, Esti; Segal, Roee; Fauth, John; Knutson, Sean; Bronstein, Omri; Ciner, Frederic; Jeger, Rina; Lichtenfeld, Yona; Woodley, Cheryl; Pennington, Paul; Cadenas, Kelli; Kushmaro, Ariel; Loya, Yossi
- Abstract
Benzophenone-3 (BP-3; oxybenzone) is an ingredient in sunscreen lotions and personal-care products that protects against the damaging effects of ultraviolet light. Oxybenzone is an emerging contaminant of concern in marine environments-produced by swimmers and municipal, residential, and boat/ship wastewater discharges. We examined the effects of oxybenzone on the larval form (planula) of the coral Stylophora pistillata, as well as its toxicity in vitro to coral cells from this and six other coral species. Oxybenzone is a photo-toxicant; adverse effects are exacerbated in the light. Whether in darkness or light, oxybenzone transformed planulae from a motile state to a deformed, sessile condition. Planulae exhibited an increasing rate of coral bleaching in response to increasing concentrations of oxybenzone. Oxybenzone is a genotoxicant to corals, exhibiting a positive relationship between DNA-AP lesions and increasing oxybenzone concentrations. Oxybenzone is a skeletal endocrine disruptor; it induced ossification of the planula, encasing the entire planula in its own skeleton. The LC of planulae exposed to oxybenzone in the light for an 8- and 24-h exposure was 3.1 mg/L and 139 µg/L, respectively. The LCs for oxybenzone in darkness for the same time points were 16.8 mg/L and 779 µg/L. Deformity EC levels (24 h) of planulae exposed to oxybenzone were 6.5 µg/L in the light and 10 µg/L in darkness. Coral cell LCs (4 h, in the light) for 7 different coral species ranges from 8 to 340 µg/L, whereas LCs (4 h, in the light) for the same species ranges from 0.062 to 8 µg/L. Coral reef contamination of oxybenzone in the U.S. Virgin Islands ranged from 75 µg/L to 1.4 mg/L, whereas Hawaiian sites were contaminated between 0.8 and 19.2 µg/L. Oxybenzone poses a hazard to coral reef conservation and threatens the resiliency of coral reefs to climate change.
- Subjects
HAWAII; VIRGIN Islands; SUNSCREENS (Cosmetics); CHEMICAL derivatives; BENZOPHENONES; CORAL physiology; CELL culture; PHYSIOLOGICAL effects of ultraviolet radiation
- Publication
Archives of Environmental Contamination & Toxicology, 2016, Vol 70, Issue 2, p265
- ISSN
0090-4341
- Publication type
Article
- DOI
10.1007/s00244-015-0227-7