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在连续多年日本鳗鲡人工繁殖实验的基础上,研究了不同饵料对日本鳗鲡仔鱼存活率的影响,并记录了仔鱼的运动特征和摄食行为。结果显示,与对照组(不投饵)相比,投喂以鲨鱼卵、磷虾提取液为基础的饵料和以鲨鱼卵、海蜇匀浆液为基础的饵料以及微绿球藻液均提高了日本鳗鲡仔鱼的存活率,仔鱼发育至柳叶鳗前期阶段;而投喂以鲨鱼卵、卤虫匀浆液为基础的饵料和以卤虫匀浆液、磷虾提取液为基础的饵料,以及轮虫、海带+龙须菜匀浆液或海蜇以及发酵鲨鱼肉,均降低日本鳗鲡仔鱼的存活率。实验同时还研究了日本鳗鲡仔鱼的主动摄食行为,摄食时仔鱼先用吻端反复多次触碰食物,然后张开下颌咬食,证实了日本鳗鲡早期仔鱼的摄食方式是触碰后咬食。
Based on the artificial propagation experiments of Japanese eel for many years, the effects of different diets on the survival rate of Japanese eel larvae were studied, and the movement characteristics and feeding behavior of larvae were recorded. The results showed that the feeding of bait based on shark eggs and krill extract and the bait based on shark eggs and jellyfish homogenates and the micro-chlorococcum solution increased Japanese Survival rate of larvae of eel larvae larvae larvae development to early stage of willow eel; and feed shark eggs, brine shrimp homogenate-based feed and Artemia homogenate, krill extract-based feed, and rotifers, Kelp + Asparagus homogenates or jellyfish and fermented shark meat, reduce the survival rate of Japanese eel larvae. At the same time, the experiment also studied the active feeding behavior of Japanese eel larvae. When feeding, the larva repeatedly touched the food with the snout for several times, and then opened the lower jaw to bite the food.