Fig. 3.

Oil-induced circulatory failure and corresponding fluid accumulation (edema) in pelagic fish embryos. Higher magnification views are shown for (A, A′) bluefin tuna exposed to artificially weathered source oil (1 mg/L oil, 8.5 µg/L ΣPAH); (B, B′) yellowfin tuna exposed to slick A (2 mg/L oil, 3.4 µg/L ΣPAH), (C, C′) amberjack exposed to artificially weathered source oil (1 mg/L oil, 13.8 µg/L ΣPAH). Controls are shown in A–C and oil-exposed larvae in A′–C′. Arrows indicate the anterior edges of the yolk masses, which are distorted and forced posteriorly in the oil-exposed larvae; white arrowheads indicate the location of the heart. Reduction of the eyes is indicated in the oil-exposed embryos with asterisks. (Scale bar, 0.2 mm.)