丁香酚对日本囊对虾麻醉效果的研究

Study on the Anesthetic Effect of Eugenol for Marsupenaeus japonicus

为日本囊对虾（Marsupenaeus japonicus）安全麻醉寻求一种好的方法,研究了不同质量浓度（50,100,200和400 mg/L）条件下丁香酚对日本囊对虾的麻醉效果以及麻醉状态下对虾离水操作的可行性.水温为25℃,丁香酚质量浓度低于200 mg/L时,麻醉对虾的复苏率均可达100%;而丁香酚质量浓度为400 mg/L时,幼虾和成虾的复苏率分别为86.7%和93.9%.在丁香酚质量浓度为50~200 mg/L时,麻醉后的日本囊对虾幼虾和成虾离水暴露8 min后,复苏率为100%,复苏对虾3 d后的存活率均为100%.研究结果表明,丁香酚是日本囊对虾有效、安全的麻醉剂.

The anesthetic effect of eugenol on Marsupenaeus japonicus juvenile and adult were investigated in this paper.At water temperature of 25 ℃,the recovered rates of the tested prawn reached 100% when the eugenol concentration was 50,100 and 200 mg/L respectively,and those for juvenile and adult was 86.7% and 93.9% with the eugenol concentration of 400 mg/L.While the eugenol concentration was between 50 mg/L to 200 mg/L,the recovered rate of anesthetic juvenile and adult with the exposure duration of 8 min were 100%.The survival rate of prawns in all test groups were 100% from the observation of three consecutive days.Those results indicated that eugenol is a safe and efficient anesthetic for M.japonicus.