关键词: 中华绒螯蟹, 石油烃, 富集, 代谢, 阈值

Abstract: The culture environment of Eriocheir sinensis is threatened by petroleum hydrocarbon pollution, in order to investigate the accumulation and metabolism of petroleum hydrocarbons in E. sinensis, the threshold for producing odor of petroleum hydrocarbon was obtained. This study taking 50 g E. sinensis as the study object , the bioconcentration metabolism rules and the threshold of peroleum hydrocarbons by E. sinensis was examined by using the semi static dynamic experiment. The results showed that the petroleum hydrocarbon pollutants reached balance between water environment and E. sinensis after 8 days of experiment, the low and medium concentration group of E. sinensis for petroleum hydrocarbon enrichment speed in early stage was slower than the midterm stage, then reached equilibrium quickly, the high concentration group reached equilibrium gradually after concentrated rapidly in early stage. Metabolism experiment showed the same rules that fasting at the early stage, gradually slowing down and reaching balance, petroleum hydrocarbons content didn’t return to the beginning of this enrichment experiment after two weeks metabolism experiment, this was related to the refractory. The odor threshold of petroleum hydrocarbons in E. sinensis was 12.09 ~ 15.07 mg/kg, when the concentration of petroleum hydrocarbons in water was 0.05 mg/L for the limit of the national, the petroleum hydrocarbons content in E. sinensis was less than 15 mg/kg for the limit of the national, also had no hydrocarbon odor, therefore, according to the experimental results in this paper, the safety level of petroleum hydrocarbons for aquaculture water was considered as 0.05 mg/L.

Key words: Eriocheir sinensis, petroleum hydrocarbons, enrichment, metabolize, threshold value