Feeding-Deterrent Activity of Acetone Extract from Three Padina Species Against the Six Species of Herbivorous Gastropods

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  • ウミウチワ属褐藻３種から得られたアセトン抽出物の腹足綱６種に対する摂食阻害活性
  • ウミウチワゾク カッソウ 3シュ カラ エラレタ アセトン チュウシュツブツ ノ フクソクコウ 6シュ ニ タイスル セッショク ソガイ カッセイ

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Abstract

The feeding-deterrent activities of acetone extracts from brown algae Padina crassa, P australis and P. japonica on abalones Haliotis discus hannai, H. discus discus and H. gigantea, and the snails Chlorostoma lischkei, Omphalius rusticus and O. pfeifferi carpenteri were tested by the bioassay using cellulose plate method. The neutral and acidic fractions of acetone extracts showed potent feeding-deterrent activity against these gastropods. The lipids, highly unsaturated and unsaturated fatty acids, were isolated from P. crassa as new feeding-deterrent metabolites. Feeding-deterrent activity of P. japonica was relatively low, possibly due to the physical defense with the accumulation of calcium carbonate. Among the three species of abalones, the mobile grazers H. discus hannai and H. discus discus are sensitive to metabolites of the algae. By contrast, the sedentary grazer H. gigantea is insensitive to those. Among the three species of snails, Chlorostoma lischkei, sympatric to Padina species, was most sensitive to the metabolites.

Journal

  • Aquaculture Science

    Aquaculture Science 55 (4), 599-605, 2007

    Japanese Society for Aquaculture Science

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