The host specificity of phytophagous beetles (by the aid of Cucurbitaceae-feeding beetles

植食性甲虫的宿主特异性（借助以葫芦科为食的甲虫

• 批准号: 13660042
• 负责人: MATSUDA Kazuhiro
• 金额: $ 2.37万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13660042/
• 关键词: host specificity; Cucurbitaceae-feeding beetles; Cucurbitaceae; feeding stimulants; 寄主選択

The host specificity of Cucurbitaceae-feeding beetles is explained by the existence of cucurbitacin in the host plants. The author investigates the feeding stimulants of Epilachna admirabilis, Aulacophora femoralls, A.nigripennis and A.lewisii which feed on Cucurbitaceae. The former 3 species are stimulated to feed by cucurbitacin, but the latter is not. A feeding stimulant was isolated from a sponge gourd which A.lewisii preferably feeds on. A isolated compound was a kind of steroids. This compound did not act as a feeding stimulant to E..adomirabilis, A.femoralis and A.nigirpennis This compound is a key substance when A.lewisii feeds on a sponge gourd. Trichosanthes kirilowii Maxim. var.japonicapreferably feeds on by. E.admirabilis A.femoralis and A.ninigripennis, but this plant dose not contain cucurbitacines. Feeding stimulants were identified them as a kind of steroids, 2A-diethyl 5 a cholesta-7,22E-dien 3 β-ol and luteolin-7-o-glucoside. Feeding stimulative activity was different from species specify. These results indicate that these substances are key substances when 3 species feed on T.kirilowii Maxim var.japonica. The main host plant of Paridea angulicollis is Gynostema pentaphyllum. A feeding stimulant was isolated from G.pentaphyllum, and was estimated as a kind of triterpenoid glucoside. It is thought that many phytophagous insects are not stimulated to feed by specific substances in the host plants. This investigation may reveale that what kind of substances are used when phytophgous insects feed on host plants not contained specific substances.

以葫芦科为食的甲虫的寄主特异性可以通过寄主植物中葫芦素的存在来解释。作者研究了以葫芦科植物为食的 Epilachna admirabilis、Aulacophora femoralls、A.nigripennis 和 A.lewisii 的摄食兴奋剂。前 3 个物种受葫芦素刺激而进食，但后者则不然。从 A.lewisii 最喜欢吃的丝瓜中分离出取食刺激剂。一种分离的化合物是一种类固醇。该化合物不会对 E..adomirabilis、A.femoralis 和 A.nigirpennis 起到摄食刺激剂的作用。该化合物是 A.lewisii 取食丝瓜时的关键物质。瓜蒌 (Trichosanthes kirilowi​​i) var.japonicap 优选以...为食。 E.admirabilis A.femoralis 和 A.ninigripennis，但这种植物不含葫芦素。摄食兴奋剂经鉴定为类固醇2A-二乙基5a胆甾醇7,22E-二烯3β-醇和木犀草素7-o-葡萄糖苷。摄食刺激活动与具体物种不同。这些结果表明，这些物质是3个物种取食T.kirilowi​​i Maxim var.japonica时的关键物质。 Paridea angulicollis 的主要寄主植物是绞股蓝。从 G.pentaphyllum 中分离出一种摄食兴奋剂，并被估计为一种三萜类葡萄糖苷。据认为，许多植食性昆虫不会被寄主植物中的特定物质刺激取食。这项研究可能揭示植食性昆虫以不含特定物质的寄主植物为食时使用了哪些物质。

项目成果

M.Abe, K.Matsuda: "Differences in feeding behavior between Aulacobora nigripennis and A.femoralis(Coleoptera : Chrysomelidae)to yong and old plant leaves"Entomological Science. (投稿中). (2004)

M.Abe，K.Matsuda：“Aulacobora nigripennis 和 A.femoralis（鞘翅目：叶甲科）对年轻和老植物叶子的取食行为的差异”昆虫学（2004 年）。

M.Abe, K.Matsuda: "Differences in feeding behavior between Aulacohora nigripennis and A.Femoralis (Coleoptera : Chrysomelidae) to young and old leaves"Entomological Science in contribution.

M.Abe、K.Matsuda：“Aulacohora nigripennis 和 A.Femoralis（鞘翅目：叶甲科）对幼叶和老叶取食行为的差异”《昆虫学科学》贡献。

K.Matsuda: "Feeding stimulants of cucurbitaceae-feeding leaf beetle"Applied Entomology and Zoology. (予定).

K.Matsuda：“葫芦科喂养叶甲虫的喂养兴奋剂”应用昆虫学和动物学（计划）。