河南农业科学2013，Vol.42Issue(1)：71-76,6.
人类基本呈味物质对菜粉蝶幼虫的拒食作用
Feeding Deterrence of Six Basic Tastants against Pieris rapae Larvae
摘要
Abstract
Tastants are serials of heavy-taste substances screened out by human beings for a long time,which may play an important role in the regulation of feeding behaviours of herbivoral insects. However,the either-or characterization of these substances with respect to their effects on feeding response of herbivores is not efficient to explain the comprehensive interactions among various tastants. This study tested the feeding deterrence of six tastants (citric acid,sucrose,quinine,NaCl,sanshool,and capsaicin) , alone or orthogonally combined, against Pieris rapae larvae. The paired bioassay with each tastant and control leaf disc indicated that citric acid, quinine, and sanshool evoked strong feeding deterrence, with feeding deterrence values of 93. 89% ,90. 33% , and 83. 33 %, respectively. When these tastants were orthogonally combined, capsaicin, sucrose, and sanshool exhibited stronger effects on the feeding amount,while quinine and NaCl acted antagonistically. Four tastants showing relatively stronger effects were orthogonally combined further and tested under selective and non-selective feeding conditions. The result showed that capsaicin exhibited the strongest feeding deterrence, and only one sample (9 μL sucrose + 9 μL sanshool + 3 μL capsaicin +12 μL citric acid) exhibited strong feeding deterrence under both conditions. A given tastant could show remarkable discrepancy when used alone or combined, suggesting that some multiple-factor experimental designs should be introduced in insect feeding bioassay to overcome the gustatory habituation of pests.关键词
菜粉蝶/呈味物质/拒食Key words
Pieris rapae/tastant/feeding deterrence分类
农业科技引用本文复制引用
游秀峰,孙淑君,原国辉,郭线茹,李为争..人类基本呈味物质对菜粉蝶幼虫的拒食作用[J].河南农业科学,2013,42(1):71-76,6.基金项目
河南省教育厅科学技术研究重点项目(12A210012) （12A210012）
