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- 小澤 朗人
- 静岡県農林技術研究所茶業研究センター
書誌事項
- タイトル別名
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- Can ants visiting extrafloral nectaries of the yardlong bean, <i>Vigna unguiculata</i> var. <i>sesquipedalis</i>, protect the legume seeds from stink bugs?
- ササゲ ノ ハナ ガイ ミッセン ニ アツマル アリ ワ カメムシ カラ キョウカ オ マモレル カ?
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The yardlong bean Vigna unguiculata var. sesquipedalis (L.) Verdc (cv. Jyuroku-sasage) has extrafloral nectaries (EFNs) that attract ants. The efficacy of ants visiting EFNs of the yardlong bean as a guard against stink bugs that attack the legume seeds was evaluated by field observation and experiments. The number of ants visiting the EFNs at the base of a legume was not associated with the legume length; the EFNs attract ants during all stages of legume growth. Ant species included Formica japonica Motschulsky and Pristomyrmex punctatus Smith, with the former being predominant. Diurnal activities of ants (F. japonica) visiting EFNs and stink bugs (3 species) attacking the legumes were investigated during 3 days in summer. While the number of ants increased during the day and decreased at night, the number of stink bugs exhibited the reverse pattern. The frequency of stink bugs on legumes with ants was one-third of that seen on legumes without ants. We tested 4 treatments: (1) excluding ants from legumes, (2) applying honey to legumes, (3) aphid colony on legumes, and (4) control. I found that the number of stink bugs was the highest on the ant-excluded legumes and the lowest on the honey-treated ones. These results suggest that ants visiting EFNs serve as a guard against stink bugs that attack the legumes; the efficacy of this protection depends on the diurnal activities of the ants.<br>
収録刊行物
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- 関西病虫害研究会報
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関西病虫害研究会報 54 (0), 41-45, 2012
関西病虫害研究会
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詳細情報 詳細情報について
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- CRID
- 1390282681302576128
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- NII論文ID
- 130004543977
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- NII書誌ID
- AN0004725X
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- ISSN
- 18836291
- 03871002
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- NDL書誌ID
- 023844784
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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