球蚧蓝绿跳小蜂的研究

A Study on Blastothrix sericae Dalman

球蚧蓝绿跳小蜂是球坚蚧的重要天敌。该蜂寄生于球坚蚧的越冬若虫为致死性单寄生，寄生于球坚蚧雌成虫为非致死性过寄生，但显著降低球坚蚧的抱卵量。在新疆和田地区该蜂寄生于球坚蚧越冬若虫的寄生率为28．5％，寄生于雌成虫的寄生率为51．3％；在喀什地区寄生于球坚蚧雌成虫的寄生率为47％。描述了球蚧蓝绿跳小蜂的卵、幼虫、蛹的形态特征。叙述了球蚧蓝绿跳小峰世代生活史和习性，及其交配、产卵行为。表述球蚧蓝绿跳小峰与球坚蚧生活阶段对应关系。实施刮皮涂药措施防治球坚蚧，既能有效地防治球坚蚧，又可保护球蚧蓝绿跳小蜂。采集带蜂枝条插入装水塑料袋搬迁天敌，简单易行且效果好。

Blastothrix sericae Dalman as an important natural enemy of Eulemcanium spp. has 2 forms ofparasitization on the latter. The form parastizing on overwintering 0nymphae belongs to lethal monoparasitism,while the form parasitizing on female edults belongs to nonlethal multiparasitism that reduces the ovipositionquantity no tably. The parasitic rates of Blastothrix sericae Dalman on overwintering nymphae and on female adults ofEulecanium spp. were 28.5% and 51.3%, respechvely in Hetian Prefecture, Xinjiang. But the parasitic rate ofBlastothrix sericae on female adults of Eulecanium spp, in Kashikal Prefecture was 47.0% Morphologcalcharacteristics of ovum, larva, pupa and imago , life history, living. habits, mating and ovipositing behaviors ofBlastothrix sericae Dalman were described . The living time relationship between Blastothrix sericae Dalman and Eulecanium spp. was reported. Bark scraping and pecticide smearing were effective not only for conirollingEulecanium spp., but also for protecting Blastothrix sericae Dalman . Collecting twigs with Blastothrix sericae Dalman and carrying the twigs in plastic bag with water is a simple but efficatious way to transport and deliver it.