Feeding stimulants of Solanaceae-feeding lady beetle, Epilachna vigintioctomaculata (Coleoptera: Coccinellidae) from potato leaves

被引:12
作者
Endo, N [1 ]
Abe, M [1 ]
Sekine, T [1 ]
Matsuda, K [1 ]
机构
[1] Tohoku Univ, Grad Sch Agr Sci, Lab Insect Sci & Bioregulat, Sendai, Miyagi 9818555, Japan
关键词
Epilachna vigintioctomaculata; Solanaceae; host plant selection; feeding stimulants; methyl linolenate;
D O I
10.1303/aez.2004.411
中图分类号
Q96 [昆虫学];
学科分类号
摘要
A phytophagous lady beetle, Epilachna vigintioctomaculata, feeds mainly on potato (Solanum tuberosum) leaves. The methanol extracts of potato leaves showed feeding stimulative effects on the adult of the beetle. The feeding stimulants were isolated and identified as methyl linolenate from a lipid-soluble fraction, and glucose and fructose from an aqueous fraction. Although methyl linolenate alone was inactive, it acted synergistically with sugars. Methyl linolenate maximized the feeding activity of sugars at the concentration contained in the potato leaves. It is suggested that methyl linolenate plays an important role in the host selection of E. vigintioctomaculata.
引用
收藏
页码:411 / 416
页数:6
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