Effects of calanoid copepod Schmackeria poplesia as a live food on the growth, survival and fatty acid composition of larvae and juveniles of Japanese flounder, Paralichthys olivaceus
Journal of Ocean University of China, ISSN: 1672-5182, Vol: 8, Issue: 4, Page: 359-365
2009
- 14Citations
- 15Captures
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Article Description
Zooplankton constitutes a major part of the diet for fish larvae in the marine food web, and it is generally believed that copepods can meet the nutritional requirements of fish larvae. In this study, calanoid copepod Schmackeria poplesia, rotifer Brachionus plicatilis and anostraca crustacean Artemia sp. were analyzed for fatty acid contents, and were used as live food for culturing larval Japanese flounder, Paralichthys olivaceus. The total content of three types of HUFAs (DHA, EPA and ARA) in S. poplesia was significantly higher than that in the other two live foods (P <0.01). Three live organisms were used for raising larvae and juveniles of Paralichthys olivaceus respectively for 15 and 10 d. Then the growth, survival and fatty acid composition of the larvae and juveniles were investigated. The results showed that the larvae and juveniles fed with copepods (S. poplesia) had significantly higher growth rate than those fed with the other two organisms (P < 0.01). The survival of the flounder larvae fed with copepods was significantly higher than that of the others (P < 0.01), and the survival of the juvenile fish fed with copepods was higher than that fed with Artemia (P < 0.05). The contents of three types of HUFAs (DHA, EPA and ARA) and the ratio of DHA/EPA in larval and juvenile flounder P. olivaceus were analyzed. The results showed that the contents of DHA, EPA and ARA in the larvae and juveniles fed with S. poplesia were higher than those fed with a mixed diet or Artemia only, and the ratio of EPA/ARA in larvae and juveniles of P. olivaceus fed with S. poplesia was lower than that in the case of feeding with a mixed diet or Artemia only. The present data showed that copepod is the best choice for feeding the larvae and juveniles of fish considering its effects on the survival, growth and nutrition composition of the fish. © Science Press, Ocean University of China and Springer Berlin Heidelberg 2009.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=70350507442&origin=inward; http://dx.doi.org/10.1007/s11802-009-0359-3; http://link.springer.com/10.1007/s11802-009-0359-3; http://link.springer.com/content/pdf/10.1007/s11802-009-0359-3; http://link.springer.com/content/pdf/10.1007/s11802-009-0359-3.pdf; http://link.springer.com/article/10.1007/s11802-009-0359-3/fulltext.html; http://www.springerlink.com/index/10.1007/s11802-009-0359-3; http://www.springerlink.com/index/pdf/10.1007/s11802-009-0359-3; https://dx.doi.org/10.1007/s11802-009-0359-3; https://link.springer.com/article/10.1007/s11802-009-0359-3
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