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守瓜属甲虫的取食行为与寄主植物葫芦素种类的关系
引用本文:杨晓,孔垂华,梁文举,张茂新,胡飞.守瓜属甲虫的取食行为与寄主植物葫芦素种类的关系[J].应用生态学报,2005,16(7):1326-1329.
作者姓名:杨晓  孔垂华  梁文举  张茂新  胡飞
作者单位:1. 华南农业大学热带亚热带生态研究所,广州,510642
2. 华南农业大学热带亚热带生态研究所,广州,510642;中国科学院沈阳应用生态研究所,沈阳,110016
3. 中国科学院沈阳应用生态研究所,沈阳,110016
基金项目:国家自然科学基金项目(30170182),中国科学院“百人计划”资助项目.
摘    要:黄足黄守瓜和黄足黑守瓜是两个非常相似的守瓜属甲虫,但它们对寄主的选择性和取食行为却完全不同.黄足黄守瓜先用口器在黄瓜或南瓜叶面划圈,然后取食圈内叶组织,但却不取食丝瓜、苦瓜和西瓜,而黄足黑守瓜则只取食丝瓜,且不发生划圈取食行为.研究表明,这两种甲虫的寄主选择性及取食行为与瓜类作物合成的葫芦素种类显著相关.黄瓜和南瓜在黄足黄守瓜取食后能诱导合成抑制取食的葫芦素I,使得黄守瓜只能先划圈阻断葫芦素I在叶面的迁移才能取食圈内叶组织.而苦瓜和西瓜本身就合成抑制取食的葫芦素D,使得甲虫不选择这两种瓜类作物取食.丝瓜则合成刺激甲虫取食的葫芦素B和E,使得黑守瓜能直接取食.本研究表明,守瓜属甲虫对寄主植物合成的特定次生物质的味觉响应机制在其寄主选择和取食行为方面起着重要作用.

关 键 词:黄足黄守瓜  黄足黑守瓜  瓜类作物  取食行为  葫芦素
文章编号:1001-9332(2005)07-1326-04
收稿时间:2004-07-21
修稿时间:2004年7月21日

Relationships of Aulacophora beetles feeding behavior with cucurbitacin types in host crops
YANG Xiao,KONG Chuihua,LIANG Wenju,Zhang Maoxin,HU Fei.Relationships of Aulacophora beetles feeding behavior with cucurbitacin types in host crops[J].Chinese Journal of Applied Ecology,2005,16(7):1326-1329.
Authors:YANG Xiao  KONG Chuihua  LIANG Wenju  Zhang Maoxin  HU Fei
Institution:Institute of Tropical and Subtropical Ecology, South China Agricultural University, Guangzhou 510642, China. yxyangxiao@163.com
Abstract:Aulacophora fermoralis chinensis and Aulacophora cattigarensis are the two related Aulacophora beetles,but their host selectivity and feeding behavior are significantly different.A.fermoralis chinensis usually feeds upon Cucumis sativus and Cucurbita moschata,but never upon Luffa acutangula,Momordica charantia and Citrullas lanatus.Its feeding behavior on hosts is to snip a circular trench on their leaves,and then,to feed the leaf tissues isolated by the trench.On the contrary,A.cattigarensis only feeds L.acutangula,and its trenching behavior rarely occurs.This study showed that the host selectivity and feeding behavior of the two beetles were significantly correlated with the types of cucurbitacin biosynthesized by host melon crops.C.sativus and C.moschata might be induced to produce cucurbitacin I by A.fermoralis chinensis feeding,and this compound was responsible for feeding deterrent on A.fermoralis chinensis.Therefore,the feeding behavior of A.fermoralis chinensis was to block the translocation of cucurbitacin I to feeding sites.M.charantia and C.lanatus contained deterrent cucurbitacin D,and thus,both beetles never fed upon them,while L.acutangula contained stimulants cucurbitacin B and E,and made A.cattigarensis directly feed upon it without trenching.The results suggested that the taste responses of insects on specific allelochemicals from plants may play an important role in host selectivity and feeding behavior.
Keywords:Aulacophora fermoralis chinensis  Aulacophora cattigarensis  Melon crop  Feeding behavior  Cucurbitacin  
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