CAJ | 학술논문

以绿鳍马面鲀为研究对象，通过室内受控实验，比较研究了其对我国沿海4种常见大型水母(海蜇、沙海蜇、海月水母和白色霞水母)的捕食差异。结果显示，体重为(215±20) g的绿鳍马面鲀对海月水母的捕食能力最强，日均最大摄食量为(150.7±18.6) g/fish，其次是海蜇和白色霞水母，日均摄食量分别为(129.7±11.6)和(120.0±19.3) g/fish，对沙海蜇的摄食量最少，为(92.5±11.3) g/fish；绿鳍马面鲀对海月水母与海蜇摄食量主要受投喂量影响，与规格无关，当投喂量小于其最大捕食量时，绿鳍马面鲀可捕食其周围所有水母，当投喂量超过其最大摄食量并继续增加时，绿鳍马面鲀摄食量保持不变，但残余水母的触手和伞部边缘均被啃食，继而导致水母摄食能力丧失，难以继续生存；在适口饵料冰鲜玉筋鱼充足的情况下，绿鳍马面鲀对水母具有明显的摄食偏向性，与仅投喂水母实验组相比，其对海月水母和海蜇的日均摄食量仅降低了20.2%和16.9%。研究结果表明，绿鳍马面鲀对上述4种水母皆能捕食。
이록기마면돈위연구대상，통과실내수공실험，비교연구료기대아국연해4충상견대형수모(해철、사해철、해월수모화백색하수모)적포식차이。결과현시，체중위(215±20) g적록기마면돈대해월수모적포식능력최강，일균최대섭식량위(150.7±18.6) g/fish，기차시해철화백색하수모，일균섭식량분별위(129.7±11.6)화(120.0±19.3) g/fish，대사해철적섭식량최소，위(92.5±11.3) g/fish；록기마면돈대해월수모여해철섭식량주요수투위량영향，여규격무관，당투위량소우기최대포식량시，록기마면돈가포식기주위소유수모，당투위량초과기최대섭식량병계속증가시，록기마면돈섭식량보지불변，단잔여수모적촉수화산부변연균피습식，계이도치수모섭식능력상실，난이계속생존；재괄구이료빙선옥근어충족적정황하，록기마면돈대수모구유명현적섭식편향성，여부투위수모실험조상비，기대해월수모화해철적일균섭식량부강저료20.2%화16.9%。연구결과표명，록기마면돈대상술4충수모개능포식。
The predatory behavior of filefish Navodon septentrionalis to Aurelia aurita was observed before. Here we hypothesized that there were also predator-prey relationships between filefish and other jellyfish species. We explored the predatory behaviors of filefish to four species of giant jellyfish, including Rhopilema esculentum, Nemopilema nomurai, A. aurita and Cyanea nozakii, under laboratory conditions. We also studied the prey selection of filefish among jellyfish species of R. esculentum and A. aurita, and sand lance. Filefish weighted (215±20) g actively preyed on all four jellyfish species, and its daily medusae consumption of A. aurita, R. esculentum, C. nozakii, and N. nomurai was 150.7±18.6, 129.7±11.6, 120.0±19.3, and 92.5±11.3 g/fish respectively. It was the medusae biomass, not the bell diameter that affected the daily consumption when medusae of A. aurita and R. esculentum were fed to filefish. All medusae were preyed when their biomass was below the maximum consumption of filefish. Filefish did not prey more than the daily maximum consumption even if the medusa exceeded the maximum consumption, however, the remaining medusae all died because their tentacles and edges of umbrella were eaten. Filefish showed prey preference for jellyfish when sand lance was fed along with medusae of A. aurita and R. esculentum, and the daily consumption of A. aurita and R. esculentum was only reduced by 20.2% and 16.9%. These results should contribute to better understanding of the relationship between changes in fish population and giant jellyfish blooms in Chinese coastal areas.