Bionomics of the Gall-Parasitic Flea Weevil Rhynchaenus hustachei (Coleoptera : Curculionidae)
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概要
- 論文の詳細を見る
Field observations showed that the gall-parasitic flea weevil Rhynchaenus hustachei often parasitized the pouch galls of the aphid Paracolopha morrisoni on Zelkova serrata leaves in the Kinki District, Central Japan. The eggs of the weevil were laid into the gall walls and hatched larvae entered the galls. Each parasitized gall contained only one weevil. The inside of the gall wall was heavily grazed by the weevil larva, resulting in destruction of the aphid colony. These observations suggest that the weevil is an obligatory cecidophage. At three of six study sites, weevil parasitism was the greatest mortality factor for the aphids. A facultative hyperparasitoid, Eupelmus urozonus (Eupelmidae) and Pteromalus sp. (Pteromalidae) parasitized the larvae and pupae of the weevil.
- 日本昆虫学会の論文
- 2001-06-25
著者
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YAMAZAKI Kazuo
Osaka City Institute of Public Health and Environmental Sciences
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Sugiura Shinji
Laboratory Of Forest Ecology Graduate School Of Agriculture Kyoto University
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