Dietary Changes in the Abalone, Haliotis discus hannai, and Relationship with the Development of the Digestive Organ

DOI Web Site 被引用文献6件 オープンアクセス
  • TAKAMI Hideki
    Coastal Fisheries and Aquaculture Division, Tohoku National Fisheries Research Institute, Fisheries Research Agency
  • KAWAMURA Tomohiko
    Department of Living Marine Biological Resources, Ocean Research Institute, The University of Tokyo

書誌事項

タイトル別名
  • Dietary Changes in the Abalone, <i>Haliotis discus hannai</i>, and Relationship with the Development of the Digestive Organ
公開日
2003
資源種別
journal article
DOI
  • 10.6090/jarq.37.89
公開者
国立研究開発法人　国際農林水産業研究センター

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説明

The feeding habits of the Ezo abalone, Haliotis discus hannai, changed with growth. Three major changes in the feeding of H. discus hannai were identified by reviewing recent studies on the feeding habits of this species. The first change occurred at the time of the metamorphosis, namely a shift from lecithotrophy to particle feeding. In the second change, when the shell length (SL) reached values of about 0.6–0.8 mm, post-larvae were able to digest diatom diets and they grew more rapidly on efficiently digested strains. The final change consisted of a shift from a biofilm-dominated diet to a macroalgal-dominated diet. Post-larval abalone (> 1.8 mm SL) were able to utilize juvenile macroalgae efficiently. These changes in the feeding habits were closely related to ontogenetic changes in the digestive enzyme activities and the development of the radula morphology.

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