Oviposition and feeding preference of the pellucid hawk moth, <i>Cephonodes hylas</i> (Lepidoptera : Sphingidae), for <i>Gardenia jasminoides</i> form. <i>ovalifolia</i>

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  • Kanetani Seiichi
    Kyushu Research Center, Forestry and Forest Products Research Institute, Forest Research and Management Organization
  • Ueda Akira
    Kyushu Research Center, Forestry and Forest Products Research Institute, Forest Research and Management Organization
  • Ueda Natsuya
    Kumamoto Prefectural Daini High School
  • Inoue Kazuhisa
    Kumamoto Prefectural Daini High School
  • Tsukahara Yoshihiro
    Kumamoto Prefectural Daini High School
  • Murakami Taisei
    Kumamoto Prefectural Daini High School
  • Tajima Takafumi
    Kumamoto Prefectural Daini High School
  • Senoue Mayumi
    Kumamoto Prefectural Daini High School
  • Yamamoto Kenichi
    Kyushu Research Center, Forestry and Forest Products Research Institute, Forest Research and Management Organization Present address : Hokkaido Research Center, Forestry and Forest Products Research Institute, Forest Research and Management Organization
  • Matsunaga Michio
    Kyushu Research Center, Forestry and Forest Products Research Institute, Forest Research and Management Organization

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  • ヤエクチナシに対するオオスカシバ（鱗翅目：スズメガ科）の産卵選好性および摂食選好性
  • ヤエクチナシ ニ タイスル オオスカシバ(リンシモク:スズメガカ)ノ サンランセン コウセイ オヨビ セッショクセン コウセイ

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Abstract

<p>To consider the appropriate methods to conserve the double gardenia, Gardenia jasminoides form. ovalifolia, around Mt. Tasuda-yama, we compared oviposition and feeding preferences of the pellucid hawk moth, Cephonodes hylas, between the double gardenia and the common gardenia, G. jasminoides. Through the field observation, the number of eggs (total of eggs and hatched larvae) oviposited per surface area of the tree crown was significantly larger on the double gardenia. Oviposition on the leaf of both gardenias reached over 75% and was especially abundant on the young leaf. For feeding preference, we compared the areas of leaves fed by a larvae released for 24 hours into the plastic box containing each five leaves of both gardenias but the feeding rate were not differed. We also compared the presence of feeding by a larvae released for 1 hour on the plastic tray containing each leaf with the same size of both gardenias but no preferences observed. These results suggested the moth preferred the double gardenia to the common gardenia for the oviposition but the larvae had no feeding preferences. We discussed the importance to control the moth for in/ex situ conservation of the double gardenia.</p>

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