Exposure to ultraviolet radiation late in development increases the toxicity of oil to mahi‐mahi (Coryphaena hippurus) embryos

  title={Exposure to ultraviolet radiation late in development increases the toxicity of oil to mahi‐mahi (Coryphaena hippurus) embryos},
  author={Lauren E Sweet and Jason T. Magnuson and Thomas R. Garner and Matthew M Alloy and John D. Stieglitz and Daniel D. Benetti and Martin Grosell and Aaron P. Roberts},
  journal={Environmental Toxicology and Chemistry},
The Deepwater Horizon oil spill in 2010 overlapped with the spawning of many pelagic fish species in the Gulf of Mexico, including mahi‐mahi (Coryphaena hippurus). Polycyclic aromatic hydrocarbons (PAHs) released during the spill have been shown to cause photo‐induced toxicity under ultraviolet (UV) radiation. In the present study, mahi‐mahi embryos were exposed to high‐energy water accommodated fractions of source and naturally weathered oils for up to 48 h. The timing of co‐exposure with UV… 
Photo‐induced toxicity following exposure to crude oil and ultraviolet radiation in 2 Australian fishes
Yellowtail kingfish embryos co-exposed to oil and full-spectrum sunlight exhibited decreased hatching success and a higher incidence of cardiac arrhythmias, compared with filtered sunlight, which highlights the need for more studies investigating the effects of PAHs and photo-induced toxicity under environmental conditions relevant to Australia.
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Photoenhanced Toxicity of Weathered Crude Oil in Sediment and Water to Larval Zebrafish
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Environmental conditions at the time of an oil spill will significantly influence oil toxicity and organismal response and should be taken into consideration in toxicity testing and oil spill damage assessments.


Ultraviolet Radiation Enhances the Toxicity of Deepwater Horizon Oil to Mahi-mahi (Coryphaena hippurus) Embryos.
It is reported that coexposure to natural sunlight and WAF significantly reduced percent hatch in mahi-mahi embryos, suggesting that laboratory toxicity tests that do not include UV may underestimate the toxicity of oil spills to early lifestage fish species.
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Findings indicate that early lifestage blue crab are sensitive to photo-induced toxicity from Deepwater Horizon slick oil, and survival was found to be UV- and PAH-dependent.
Acute embryonic or juvenile exposure to Deepwater Horizon crude oil impairs the swimming performance of mahi-mahi (Coryphaena hippurus).
It is shown that brief exposure of a water-accommodated fraction of oil from the spill to mahi-mahi as juveniles, or as embryos/larvae that were then raised to juvenile stage, reduces their swimming performance.
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Using zebrafish embryos, blockade of AhR pathway components with antisense morpholino oligonucleotides demonstrated that the key developmental defects induced by weathered crude oil exposure are mediated by low-molecular-weight tricyclic PAHs through AhR-independent disruption of cardiovascular function and morphogenesis.
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The photodynamic, actue toxicities of 20 polycyclic aromatic hydrocarbons (PAHs) to Daphnia magna were predicted by photophysical and physiochemical parameters. The photophysical parameters