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Accumulation and toxicity of monoaromatic petroleum hydrocarbons in early life stages of cod and haddock

Accumulation and toxicity of monoaromatic petroleum hydrocarbons in early life stages of cod and haddock

Category
Journal publication
Abstract
A multitude of recent studies have documented the detrimental effects of crude oil exposure on early life stages of fish, including larvae and embryos. While polycyclic aromatic hydrocarbons (PAHs), particularly alkyl PAHs, are often considered the main cause of observed toxic effects, other crude oil derived organic compounds are usually overlooked. In the current study, comprehensive two-dimensional gas chromatography coupled to mass spectrometry was applied to investigate the body burden of a wide range of petrogenic compounds in Atlantic haddock (Melanogrammus aeglefinus) and cod (Gadus morhua) embryos that had been exposed to sublethal doses of dispersed crude oil. Several groups of alkylated monoaromatic compounds (e.g. alkyl tetralins, indanes and alkyl benzenes), as well as highly alkylated PAHs, were found to accumulate in the fish embryos upon crude oil exposure. To investigate the toxicity of the monoaromatic compounds, two models (1-isopropyl-4-methyltetralin and 1-isopropyl-4-methylindane) were synthesized and shown to bioaccumulate and cause delayed hatching in developing embryos. Minor developmental effects, including craniofacial and jaw deformations and pericardial edemas, were also observed at the highest studied concentrations of the alkylindane.
Client
  • Norges forskningsråd / 234367
  • Norges forskningsråd / 267820
Language
English
Author(s)
Affiliation
  • Institute of Marine Research
  • University of Bergen
  • SINTEF Ocean / Miljø og nye ressurser
  • Institute of Marine Research
  • University of Plymouth
Year
2019
Published in
Environmental Pollution
ISSN
0269-7491
Publisher
Elsevier Science
Volume
251
Page(s)
212 - 220