Avoidance tests as a tool to detect sublethal effects of oil-impacted sediments

Ariadna S. Szczybelski*, Tineke Kampen, Joris Vromans, Edwin T.H.M. Peeters, Martine J. van den Heuvel-Greve, Nico W. van den Brink, Albert A. Koelmans

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)


Currently, risk assessment for oil contamination does not consider behavioral responses of benthos to oil toxicity. Avoidance of oil-contaminated sediment by benthic amphipods, however, may be a highly sensitive endpoint for sublethal effects of commonly used distillate fuels. In the present study, the avoidance behavior of temperate freshwater (Gammarus pulex) and marine (Gammarus locusta) amphipods was tested by allowing them to choose between a reference sediment and a distillate marine grade A (DMA) oil-spiked sediment. Avoidance of DMA-spiked sediment at 1000mg/kg dry weight was significant within the total exposure time (96h) in G. pulex and within the first 72h in G. locusta in 1 of 2 tests. Absence of DMA avoidance at lower concentrations (≤250mg/kg dry wt) indicates that test species can only detect DMA above these concentrations. However, sensitivity to oil may vary according to the phenology and physiological conditions of the populations involved, such as the species temperature tolerance and reproductive stage. The results suggest that avoidance tests may be used as an alternative to traditional chronic toxicity tests provided that a causal link between avoidance and long-term effects can be established.
Original languageEnglish
Pages (from-to)1757-1766
JournalEnvironmental Toxicology and Chemistry
Issue number6
Early online date1 Jan 2018
Publication statusPublished - Jun 2018


  • Amphipod
  • Avoidance
  • Benthic macroinvertebrates
  • Distillate marine grade A oil
  • Oil spills
  • Risk assessment


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