Ecotoxicology

, Volume 23, Issue 2, pp 175–191

Toxicological effects of the sunscreen UV filter, benzophenone-2, on planulae and in vitro cells of the coral, Stylophora pistillata

Authors

    • Haereticus Environmental Laboratory
  • Esti Kramarsky-Winter
    • Department of Zoology, George S. Wise Faculty of Life SciencesTel Aviv University
    • Avram and Stella Goldstein-Goren Department of Biotechnology Engineering, Faculty of Engineering Sciences and National Institute For Biotechnology in the NegevBen-Gurion University of the Negev
  • John E. Fauth
    • Department of BiologyUniversity of Central Florida
  • Roee Segal
    • Department of Zoology, George S. Wise Faculty of Life SciencesTel Aviv University
  • Omri Bronstein
    • Department of Zoology, George S. Wise Faculty of Life SciencesTel Aviv University
  • Rina Jeger
    • Department of Life SciencesBen-Gurion University of the Negev
  • Yona Lichtenfeld
    • Avram and Stella Goldstein-Goren Department of Biotechnology Engineering, Faculty of Engineering Sciences and National Institute For Biotechnology in the NegevBen-Gurion University of the Negev
  • Cheryl M. Woodley
    • Hollings Marine LaboratoryU.S. National Oceanic & Atmospheric Administration
    • Center for Coastal Environmental Health and Biomolecular ResearchU.S. National Oceanic & Atmospheric Administration
  • Paul Pennington
    • Center for Coastal Environmental Health and Biomolecular ResearchU.S. National Oceanic & Atmospheric Administration
  • Ariel Kushmaro
    • Avram and Stella Goldstein-Goren Department of Biotechnology Engineering, Faculty of Engineering Sciences and National Institute For Biotechnology in the NegevBen-Gurion University of the Negev
    • School of Materials Science & EngineeringNanyang Technological University
  • Yossi Loya
    • Department of Zoology, George S. Wise Faculty of Life SciencesTel Aviv University
Article

DOI: 10.1007/s10646-013-1161-y

Cite this article as:
Downs, C.A., Kramarsky-Winter, E., Fauth, J.E. et al. Ecotoxicology (2014) 23: 175. doi:10.1007/s10646-013-1161-y

Abstract

Benzophenone-2 (BP-2) is an additive to personal-care products and commercial solutions that protects against the damaging effects of ultraviolet light. BP-2 is an “emerging contaminant of concern” that is often released as a pollutant through municipal and boat/ship wastewater discharges and landfill leachates, as well as through residential septic fields and unmanaged cesspits. Although BP-2 may be a contaminant on coral reefs, its environmental toxicity to reefs is unknown. This poses a potential management issue, since BP-2 is a known endocrine disruptor as well as a weak genotoxicant. We examined the effects of BP-2 on the larval form (planula) of the coral, Stylophora pistillata, as well as its toxicity to in vitro coral cells. BP-2 is a photo-toxicant; adverse effects are exacerbated in the light versus in darkness. Whether in darkness or light, BP-2 induced coral planulae to transform from a motile planktonic state to a deformed, sessile condition. Planulae exhibited an increasing rate of coral bleaching in response to increasing concentrations of BP-2. BP-2 is a genotoxicant to corals, exhibiting a strong positive relationship between DNA-AP lesions and increasing BP-2 concentrations. BP-2 exposure in the light induced extensive necrosis in both the epidermis and gastrodermis. In contrast, BP-2 exposure in darkness induced autophagy and autophagic cell death. The LC50 of BP-2 in the light for an 8 and 24 h exposure was 120 and 165 parts per billion (ppb), respectively. The LC50s for BP-2 in darkness for the same time points were 144 and 548 ppb. Deformity EC20 levels (24 h) were 246 parts per trillion in the light and 9.6 ppb in darkness.

Keywords

Coral Benzophenone-2 Cell toxicity Coral planula Sunscreen UV filters

Supplementary material

10646_2013_1161_MOESM1_ESM.tif (654 kb)
Proportion of planula alive as a function of benzophenone-2 concentration. Symbol size is proportional to the number of replicates having a given value. Regression line (solid) and 95 % confidence intervals (dashed lines) are shown for each statistically significant fit. a Stylophora pistillata exposed to benzophenone-2 for 8 h in the light. b S. pistillata exposed to benzophenone-2 for 8 h in the dark. c S. pistillata exposed to benzophenone-2 for planulae exposed for 8 h in the light, then 16 h of darkness. d S. pistillata exposed to benzophenone-2 for 24 h in the dark
10646_2013_1161_MOESM2_ESM.tif (781 kb)
Proportion of non-deformed planulae as a function of benzophenone-2 concentration. Symbol size is proportional to the number of replicates having a given value. Regression line (solid) and 95 % confidence intervals (dashed lines) are shown for each statistically significant fit. a Stylophora pistillata exposed to benzophenone-2 for 8 h in the light. b S. pistillata exposed to benzophenone-2 for 8 h in the dark. c S. pistillata exposed to benzophenone-2 for planulae exposed for 8 h in the light, then 16 h of darkness. d S. pistillata exposed to benzophenone-2 for 24 h in the dark
10646_2013_1161_MOESM3_ESM.tif (1.4 mb)
PROBIT analyses of dose–response curves of cells of Stylophora pistillata exposed to benzophenone-2. PROBITs fit using a Gompertz–Weibull exponential distribution were used to calculate LC50s. a S. pistillata exposed to benzophenone-2 for 8 h in the light. b S. pistillata exposed to benzophenone-2 for 8 h in the dark
10646_2013_1161_MOESM4_ESM.tif (1.2 mb)
PROBIT analyses of dose–response curves of number of deformed planulae of Stylophora pistillata exposed to benzophenone-2. PROBITs fit using a Gompertz-Weibull exponential distribution were used to calculate EC50s. a S. pistillata exposed to benzophenone-2 for 8 h in the light. b S. pistillata exposed to benzophenone-2 for planulae exposed for 8 h in the light, then 16 h of darkness. c S. pistillata exposed to benzophenone-2 for 8 h in the dark. d S. pistillata exposed to benzophenone-2 for 24 h in the dark
10646_2013_1161_MOESM5_ESM.tif (898 kb)
PROBIT analyses of dose-lethality curves of planulae of Stylophora pistillata exposed to benzophenone-2. PROBITs fit using a Gompertz–Weibull exponential distribution were used to calculate LC50s. a S. pistillata exposed to benzophenone-2 for 8 h in the light. b S. pistillata exposed to benzophenone-2 for 24 h in the light. c S. pistillata exposed to benzophenone-2 for 8 h in the dark

Copyright information

© Springer Science+Business Media New York 2013