Effects of Exposure to Low Concentrations of Oil on the Expression of Cytochrome P4501a and Routine Swimming Speed of Atlantic Haddock (Melanogrammus aeglefinus) Larvae In Situ
| Autor: | Steven Shema, Reidun M. Bjelland, Claire B. Paris, Anne Berit Skiftesvik, Camilla L Di Persia, Elin Sørhus, Howard I. Browman, Frode Bendiksen Vikebø, Veronica Lucchese, Alessandro Cresci, Matthew A. Foretich, Caroline M. F. Durif |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
In situ
animal structures Cytochrome Zoology 010501 environmental sciences sublethal impacts 01 natural sciences Article fish behavior ecotoxicology oil impact Environmental Chemistry Ecotoxicology Animals 14. Life underwater Volume concentration Oil toxicity Swimming 0105 earth and related environmental sciences Larva biology fungi oil toxicity General Chemistry Haddock Ichthyoplankton biology.organism_classification larval fish larval dispersal Petroleum 13. Climate action biology.protein Cytochromes North Sea human activities Water Pollutants Chemical |
| Zdroj: | Environmental Science & Technology |
| ISSN: | 1520-5851 0013-936X |
| Popis: | Exposure to environmentally relevant concentrations of oil could impact survival of fish larvae in situ through subtle effects on larval behavior. During the larval period, Atlantic haddock (Melanogrammus aeglefinus) are transported toward nursery grounds by ocean currents and active swimming, which can modify their drift route. Haddock larvae are sensitive to dispersed oil; however, whether exposure to oil during development impacts the ability of haddock larvae to swim in situ is unknown. Here, we exposed Atlantic haddock embryos to 10 and 80 μg oil/L (0.1 and 0.8 μg ∑PAH/L) of crude oil for 8 days and used a novel approach to measure its effect on the larval swimming behavior in situ. We assessed the swimming behavior of 138 haddock larvae in situ, in the North Sea, using a transparent drifting chamber. Expression of cytochrome P4501a (cyp1a) was also measured. Exposure to 10 and 80 μg oil/L significantly reduced the average in situ routine swimming speed by 30–40% compared to the controls. Expression of cyp1a was significantly higher in both exposed groups. This study reports key information for improving oil spill risk assessment models and presents a novel approach to study sublethal effects of pollutants on fish larvae in situ. Very low concentrations of oil negatively impact swimming of haddock larvae in situ, lowering their chances to survive at sea. |
| Databáze: | OpenAIRE |
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