摘要
测定了几种主要捕食性天敌捕食斜纹夜蛾 1～ 2龄幼虫的功能反应。结果表明 ,草间小黑蛛雌成蛛、拟水狼蛛雌成蛛和叉角厉蝽 2龄若虫对斜纹夜蛾 1～ 2龄幼虫均有较强的捕食能力 ,其理论最大捕食量分别为 6 .12头、2 6 .0 0头和 10 .11头。在斜纹夜蛾幼虫的 6个龄期中 ,最适合于叉角厉蝽雌成虫捕食的龄期为 4龄 ,其理论最大捕食量高达 10 .5
The functional responses of Erigonidium graminicola (Sundevall), Pirata subpiraticus Boes.et str and Cantheconidea furcellata Wolff to the 1st～2nd instar larvae of common cutworm, Spodoptera litura , and the female adult of C.furcellata to various stage larvae of S.litura were determined by HollingⅡtype model in experiments. The results showed that the three predators had significant predation on the 1st～2nd instar larvae of S.litura . The theoretic max. number of the prey captured by E. graminicola, P. subpiraticus and C. furcellata is a 6.12,26.00 and 10.11 larvae respectively. Instar IV is most suitable for female adults of C. furcellata capturing in six instar of S.litura larvae, and the max. number of the prey captured is 10.59 larvae.
出处
《上海农业学报》
CSCD
2001年第4期78-81,共4页
Acta Agriculturae Shanghai
基金
教育部博士点基金项目 (编号 :96 0 5 0 1)
国家自然科学基金项目 (编号 :30 0 70 5 2 0 )
关键词
斜纹夜蛾
捕食性天敌
功能反应
叉角厉蝽
幼虫
Spodoptera litura F.
Predators
Functional response
Cantheconidea furcellata Wolff
