摘要
测试了小菜蛾成虫对甘蓝和白菜的产卵选择性及菜蛾绒茧蜂对这两种蔬菜上寄主的寄生选择性 .结果表明 ,当甘蓝和白菜同时存在时 ,小菜蛾在白菜上的产卵量约为甘蓝上的 3倍 .菜蛾绒茧蜂的寄主选择性试验表明 ,当两种蔬菜上寄主密度相同时 ,该蜂对白菜上小菜蛾幼虫的寄生数量接近甘蓝上的5倍 .最后 。
WT5”BZ]The ovipositional preference of the diamondback moth, Plutella xylostella (L.) between different Brassica vegetable plants and the host selection by Cotesia plutellae (Kurdjmov) between host larvae on different Brassica plants were studied. With the presence of both the Chinese cabbage, B. campestris L. ssp. pekinensis , the common cabbage, Brassica oleracea L. var. capitata, P. xylostella , moths laid three times as many eggs on the former as that on the latter plants. When C. plutellae wasps were provided with equal numbers of larvae of P. xylostella on both species of plants in one area, parasitism rate of hosts on B. campestris was almost five times that on B. oleracea . The possible effects of infochemicals from the Brassica plants on the oviposition preference of P. xylostella and on the host selection by C. plutellae were discussed. [WT5”HZ]
出处
《浙江大学学报（农业与生命科学版）》
CAS
CSCD
北大核心
2001年第3期273-276,共4页
Journal of Zhejiang University:Agriculture and Life Sciences
基金
国家自然科学基金重点资助项目!(39930 12 0 )
关键词
小菜蛾
菜蛾绒茧蜂
寄主植物
产卵选择性
寄主选择行为
化学生态学
WT5”BZ] Plutella xylostella (L.)
Cotesia plutellae (Kurdjmov)
host plant,ovipositional preference
host selection behaviour
