栗瘿蜂的生物学研究

The Study on the Bionomics of the Chestnut Gall Wasp(Dryocosmus Kuriphilus Yasumatsu)

本文报道了栗瘿蜂的生物学特性,栗瘿蜂对板栗树的危害特征.栗瘿蜂是板栗树的寄生昆虫,以取食栗树嫩芽为生。栗树嫩芽受害形成虫瘿,不能开花结实,直接影响板栗产量。栗瘿蜂的数量变动主要与降雨、天敌、寄主种类等有关。调查表明,在滇中地区,栗瘿长尾小蜂是栗瘿蜂的主要天敌,对栗瘿蜂种群起到一定控制作用.

The bionomics of the chestnut gall wasp, Dryocosmus kuriphilus, and the gall wasp feature injurious to the chestnut trees were reported. The chestnut gall wasp is a specialized parasitic insect, lived on the chestnut buds. The buds of the chestnut tree, which injured by the gall wasps, can grow shoots and get seeds, and will grow ball-like galls in next spring. This lead up to a poor production of the chestnuts. The population dynamics of the chestnut gall wasp is affected by rainfall, natural-enemys, and its host. Investigation showed that, in the centre of Yunnan province, Torymus sp. is a chief natural-enemy to the chestnutgall wasp, and has a good ability to control over its population.