ナタネ苗におけるコナガ幼虫の葉間移動

DOI 日本農学文献記事索引 Web Site 被引用文献2件 参考文献4件

書誌事項

タイトル別名
  • Inter-Leaf Movement of Larvae of Diamondback Moth, Plutella xylostella L. (Lepidoptera: Yponomeutidae) on Rape(Brassica napus) Seedlings.
  • ナタネ苗におけるコナガ成虫の葉間移動
  • ナタネ ナエ ニ オケル コナガ ヨウチュウ ノ ヨウカン イドウ

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説明

In the field, eggs of Plutella xylostella are laid more on the cotyledon of Brassica napus seedlings than on the true leaf. Newly-hatched larvae were reared individually on seedlings with three true leaves. The larvae immediately moved from the cotyledon to the terminal folded leaf or the younger true leaf. Feeding sites in the larval stages changed frequently; the total number of inter-leaf movements was usually 4 to 8. Young larvae mainly used the terminal true leaf as feeding or resting sites, whereas middle-stage and mature larvae preferred other true leaves to the terminal leaf. A rearing experiment showed that smaller pupae are produced when larvae are fed on the cotyledon than on the true leaves, suggesting that the true leaf is more suitable as food in the larval stage than the cotyledon.

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