モモノゴマダラノメイガ果実系の寄主植物香気に対する産卵反応

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  • Oviposition Responses of the Fruit-Feeding Type of Yellow Peach Moth, <i>Conogethes punctiferalis</i> GUENÉE (Lepidoptera: Pyralidae) to Host-Plant Odors
  • モモノゴマダラノメイガ カジツケイ ノ キシュ ショクブツ コウキ ニ タイ

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Oviposition responses of the fruit-feeding type of yellow peach moth was investigated with an artificial oviposition substrate devised by HONDA. Oviposition responses of gravid females were induced not only by the young-fruit odors of host-plants, peach, apple, pear, loquat, fig and chestnut but also by leaf-odors of non-host plants, Japanese white pine, cedar and spruce, which are the host-plant of the Pinaceae-feeding type of this species. However, the oviposition was reduced when these non-host plant leaves were given directly to the female. In dual choice-tests among the young fruit odors of these four host-plants, they always preferred the peach fruit odor to the other fruit odors. Oviposition responses were induced also by the leaf odors of host-plants, but less effective than the fruit odors. Female moths could distinguish exactly ripe peach from young green one, and stored codling from fresh one without contact. As a conclusion, host-plant odors play an important role in oviposition attraction of the fruit-feeding type of the yellow peach moth to host-plants.

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