The influence of temperature in sea urchin embryo toxicity of crude and bunker oils alone and mixed with dispersant

Laura Demiguel-Jiménez, Dennis Bilbao, Ailette Prieto, Helena C. Reinardy, Xabier Lekube, Urtzi Izagirre, Ionan Marigómez

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

This investigation deals with how temperature influences oil toxicity, alone or combined with dispersant (D). Larval lengthening, abnormalities, developmental disruption, and genotoxicity were determined in sea urchin embryos for assessing toxicity of low-energy water accommodated fractions (LEWAF) of three oils (NNA crude oil, marine gas oil –MGO-, and IFO 180 fuel oil) produced at 5–25 °C. PAH levels were similar amongst LEWAFs but PAH profiles varied with oil and production temperature. The sum of PAHs was higher in oil-dispersant LEWAFs than in oil LEWAFs, most remarkably at low production temperatures in the cases of NNA and MGO. Genotoxicity, enhanced after dispersant application, varied depending on the LEWAF production temperature in a different way for each oil. Impaired lengthening, abnormalities and developmental disruption were recorded, the severity of the effects varying with oil, dispersant application and LEWAF production temperature. Toxicity, only partially attributed to individual PAHs, was higher at lower LEWAF production temperatures
Original languageEnglish
Article number114786
Pages (from-to)114786
Number of pages16
JournalMarine Pollution Bulletin
Volume189
Early online date8 Mar 2023
DOIs
Publication statusPublished - 1 Apr 2023

Keywords

  • Dispersant
  • Oil
  • PAH mixtures
  • Sea urchin embryo
  • Temperature
  • Toxicity

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