Toxicity of crude oil and fuel oil on the embryonic development of the Large Yellow Croaker (Larmichthys crocea)

The lethal and sublethal effects of aquatic organisms by crude or fuel oils has been widely investigated, but the potential impacts of crude oils and fuel oils in the Yangtze River Estuary and East China Sea aquatic environments remain unclear. The toxicity of oils and compounds were measured in the sensitive embryonic development of the Large Yellow Croaker (Larmichthys crocea). The EC₅₀ of hatching rate of embryos of the Large Yellow Croaker by TJ014 and -20 were 112.4 mg/L and 510.8 mg/L, respectively; The LC₅₀ of after hatched of larvae by TJ014 and -20 were 8.5 mg/L and 156.2 mg/L, respectively. Acute exposures lead to the developmental abnormalities such as bradycardia, spinal curvatures, and reducing somite which is convenient and useful to evaluate the toxicity of oil. According to Values of LC₅₀/EC₅₀ and the degree developmental abnormalities could explain the toxicity of TJ014 was larger than -20. Therefore, these results may be provided some useful proofs to analysis the aquatic environmental risk.