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Comparative toxicity of five dispersants to coral larvae

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dc.contributor Australian Institute Of Marine Science
dc.contributor Australian Inst Marine Sci
dc.contributor Australian Maritime Safety Author IRVING, P. NEGRI, A. P. LUTER, H. M. FISHER, R. BRINKMAN, D. L. 2018-03-04T18:34:22Z 2018-03-04T18:34:22Z 2019-05-09T01:22:35Z 2018-03-04T18:34:22Z 2018-03-04T18:34:22Z 2019-05-09T01:22:35Z 2018-02-14
dc.identifier.citation Negri AP, Luter HM, Fisher R, Brinkman DL, Irving P (2018) Comparative toxicity of five dispersants to coral larvae. Scientific Reports 8: 3043
dc.identifier.issn 2045-2322
dc.description.abstract Oil spill responders require information on the absolute and relative toxicities of chemical dispersants to relevant receptor species to assess their use in spill response. However, little toxicity data are available for tropical marine species including reef-building corals. In this study, we experimentally assessed the sub-lethal toxicity of five dispersants to larvae of the coral Acropora millepora over three short exposure periods (2, 6 and 24 h) reflecting real-world spill response scenario durations. Inhibition of larval settlement increased rapidly between 2 and 6 h, and was highest at 24 h: EC50 Corexit EC9500A = 4.0 mg l(-1); Ardrox 6120 = 4.0 mg l(-1); Slickgone LTSW = 2.6 mg L-1; Slickgone NS = 11.1 mg L-1 and Finasol OSR52 = 3.4 mg L-1. Coral larvae were more sensitive to dispersants than most other coral life stages and marine taxa, but the toxic thresholds (EC(10)s) exceeded most realistic environmental dispersant concentrations. Estimating toxic threshold values for effects of dispersants on coral should benefit the decision-making of oil spill responders by contributing to the development of species sensitivity distributions (SSDs) for dispersant toxicity, and by informing net environmental benefit assessment (NEBA) for dispersant use.
dc.language English
dc.subject Biodegradation
dc.subject Science & Technology - Other Topics
dc.subject Crude-oil
dc.subject Aquatic Toxicity
dc.subject Deep-water-horizon
dc.subject Multidisciplinary Sciences
dc.subject Oil-spill Dispersants
dc.subject Chemical Dispersant
dc.subject Fertilization
dc.subject Inhibition
dc.subject Reef
dc.subject Metamorphosis
dc.title Comparative toxicity of five dispersants to coral larvae
dc.type journal article
dc.identifier.doi 10.1038/s41598-018-20709-2
dc.identifier.wos WOS:000424985800081

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