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

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X
本文フルテキスト
37-02-04.pdf550.79 KB

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.

刊行年月日
作成者 TAKAMI Hideki KAWAMURA Tomohiko
著者キーワード

feeding

growth

nutrition

post-larval abalone

survival

公開者 Japan International Research Center for Agricultural Sciences
オンライン掲載日
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
37
2
開始ページ 89
終了ページ 98
DOI 10.6090/jarq.37.89
権利 Japan International Research Center for Agricultural Sciences
言語 eng

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