石油烃对中华哲水蚤摄食和代谢的影响

本文研究了石油烃对中华哲水蚤摄食和代谢的影响，结果表明:石油烃对中华哲水蚤的滤水量、摄食率、耗氧率和排氨率的影响显著（p<0.05）；排氨率各浓度组间差异显著（p<0.05），对石油烃浓度的变化最敏感。恢复培养14 d后，0.051 mg/L、0.103 mg/L和0.215 mg/L浓度组的滤水量、摄食率、耗氧率和排氨率与对照组差异不显著（p>0.05），0.43 mg/L和0.86 mg/L滤水量和摄食率与对照组差异显著（p<0.05），耗氧率和排氨率差异不显著（p>0.05）。对照组和低浓度组中华哲水蚤以蛋白质代谢为主，0.43 mg/L和0.86 mg/L石油烃暴露下O∶N增大，碳水化合物或脂肪开始参与代谢，恢复培养14 d后各浓度组以蛋白质代谢为主。

Effects of petroleum hydrocarbons on ingestion and metabolism of Calanus sinicus

The effects of petroleum hydrocarbons on ingestion and metabolism of Calanus sinicus were studied. The results showed that petroleum hydrocarbons had significant effects on filtering rate, ingestion rate, respiratory rate and ammonium excretion rate of C. sinicus (p<0.05). Ammonium excretion rate was significantly different from every concentration groups (p<0.05), which was the most sensitive to the changes of petroleum hydrocarbon concentration. There were no significant differences in filtering rate, ingestion rate, respiratory rate and ammonium excretion rate between 0.051 mg/L, 0.103 mg/L, 0.215 mg/L concentration groups and the control group (p>0.05) after 14 days of recovering culture. The filtering rate and ingestion rate of 0.43 mg/L and 0.86 mg/L concentration groups were significantly differences from the control group (p<0.05), and no significant differences in respiratory rate and ammonium excretion rate (p>0.05). In the control group and low concentration groups, protein metabolism was dominant metabolism styles, the O∶N ratio increased when exposed to 0.43 mg/L and 0.86 mg/L concentration groups, carbohydrates or fats began to participate in metabolism. After 14 days of recovering culture, the metabolic was still based on protein in all concentration groups.