新疆葡萄斑叶蝉捕食性天敌的调查研究

目的]开发与利用葡萄斑叶蝉的捕食性天敌。方法]2007年对新疆葡萄斑叶蝉的捕食性天敌进行详细调查和研究,室内试验测定天敌的捕食量。结果]新疆葡萄园中的捕食性天敌以蜘蛛为主,草蛉的数量很少。蜘蛛的主要类群是球腹蛛科(八斑球腹蛛)、蟹蛛科、圆蛛科、狼蛛科(丁纹豹蛛)。个体较大的天敌种类的捕食量大,狼蛛科和蟹蛛科蜘蛛的平均捕食量达5~7头/d。除少数结网型蜘蛛捕食少量的葡萄斑叶蝉成虫外,大部分蜘蛛主要取食葡萄斑叶蝉若虫。草蛉对葡萄斑叶蝉的捕杀作用不明显。结论]蜘蛛是葡萄园中主要的捕食性天敌。

Investigation and Research on Pesearch Natural of Enemies of Erythroneura apicalis(Nawa)in Xinjiang

Objective]The research aimed to develop and utilize the predatory natural enemies of Erythroneura apicalis(Nawa).Method]The predatory natural enemies of E.apicalis in Xinjiang were investigated and studied in 2007 and the predation number of natural enemies was determined by indoor test.Result]Spider was the main predatory natural enemy in the vineyard of Xinjiang and the number of Chrysopidae spp.was very few.The main groups of spider included Theridiidae(Therdion octomacutatum),Thomisidae,Araneidae and Lycosidae(Pardosa T-insignita).The predation number of natural enemies with larger body was greater.The average predation number of Lycosidae and Thomisidae spiders reached 5～7 heads/d.Except that a few of weaving web spiders preyed on a small quantity of adult worms of E.apicalis,most of spiders mainly preyed on the nymphae of E.apicalis.The predation of Chrysopidae on E.apicalis was not obvious.Conclusion]Spiders were main predatory natural enemies in the vineyard.