Rapid narcosis and delayed mortality in larvae of king crabs and kelp shrimp exposed to the water-soluble fraction of crude oil |
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| Institution: | 1. Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, 135 Xingang Xi Road, Guangzhou 510275, People''s Republic of China;2. China National Electric Apparatus Research Institute Co, Ltd, People''s Republic of China |
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| Abstract: | Sensitivity of larval Paralithodes camtschatica and Eualus suckleyi exposed 20 min–96 h to the water-soluble fraction (WSF) of crude oil was determined. Swimming cessation in half the animals occurred within 20 minutes' exposure to 2 ppm WSF for shrimp larvae and only 0·5 ppm for crab larvae. Half the larvae of both species died after 6 hours' exposure to 8 ppm or 24 hours' exposure to 2–4 ppm, but deaths did not occur until several days after exposure ended. In the field, most non-swimming larvae would probably die as well. |
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