摘要
红蜡蚧(CeroplastesrubensMaskell)是多种果树、园林植物的重要害虫。该虫在昆明地区1年发生1代,5月上中旬为1龄若虫高峰,8月底进入成虫期,以受精雌成虫越冬。红蜡蚧的捕食性天敌昆虫有4种,隶属于鞘翅目的瓢虫科和脉翅目的草蛉科。寄生性天敌昆虫有17种,隶属于膜翅目小蜂总科的姬小蜂科、跳小蜂科、金小蜂科、蚜小蜂科和旋小蜂科,其中蜡蚧啮小蜂(Te trastichusceroplasteaeGirault)为红蜡蚧的主要寄生蜂,其数量占寄生蜂总数的42 55%,其次为黑灰蚧长盾金小蜂[Anysissaisseti ae(Ashmead)]和花角跳小蜂(Blastothrixsp.),分别占寄生蜂总数的20 33%和14 63%。以上3种寄生蜂的数量变化将影响寄主的整体消长变化。
Ceroplastes rubens Maskell is the important insect pest of some ornamental plants and fruit trees.It had one generation a year in Kunming.The most abundant population density of its firstinstar nymph appeared from early to midMay,adulthood period occurred in the end of August,and the impregnate female adults overwinterd.It was found that there were 4 species of its predatory natural enemies belonging to Coccinellidae and Chrysopidae,and 17 species of its parasitic natural enemies belonging to Eulophidae,Encyrtidae,Pteromalidae,Aphelinidae and Eupelmidae,respectively.Tetrastichus ceroplasteae Girault was the most important parasitoid of the pest,which accounted for 4255?% of all parasitoids.The next two were Anysis saissetiae Ashmead and Blastothrix sp.,accounting for 2033?% and 1463?%,respectively.The change of population density of the three parasitoids above would affect the fluctuation of whole parasitoid community.
出处
《西南农业学报》
CSCD
2003年第3期38-41,共4页
Southwest China Journal of Agricultural Sciences
基金
云南省自然科学基金项目(1999C0054M)
