Effects of Hibernia crude oil on Capelin (Mallotus villosus) embryos and larvae

摘要: Capelin (Mallotus villosus) embryos and larvae were exposed to the water-soluble fraction (WSF) of Hibernia crude oil in four different experiments. The WSF consisted primarily aromatic compounds, whereas parent aliphatic compunds. Hydrocarbon concentrations, as measured by ultraviolet spectrophotometry, decreased test beakers over time. Therefore, exposures expressed toxicity indexes (concentration x time) account for differences exposure conditions between Lethal effects on observed only at high concentrations long (27–37 mg/litre days). lower and/or shorter (1·3–7·1 days), indicating that more sensitive. Sublethal growth, pigmentation, developmental rate, time hatch, vertical position or < 10–50% lethal concentrations. Concentrations causing are unlikely occur persist, except after spills other accidents near spawning beaches. sublethal much likely persist through period, should be major concern where potential conflicts exist offshore developments inshore capelin fishers.