考氏白盾蚧生物学与天敌初步研究  

A preliminary study on the biology of Pseudaulacaspis cockerelli (Cooley) and its natural enemy

作　　者：罗佳[1,2] 葛有茂 

机构地区：[1]福建农业大学植物保护系 [2]建瓯市吉阳农技站

出　　处：《福建农业大学学报》1997年第2期194-199,共6页Journal of Fujian Agricultural University

摘　　要：考氏白盾蚧Ｐｓｅｕｄａｕｌａｃａｓｐｉｓｃｏｃｋｅｒｅｌｉ（Ｃｏｏｌｅｙ）是多种观赏植物的重要害虫．福建福州１年发生６代，冬季无越冬现象．雌成虫在田间全年可见，５月中旬和６月下旬为一龄若虫高峰，全年以８月份虫口最少．每雌平均产卵８０．８粒．已知寄生性天敌有４种，隶属于小蜂总科的蚜小蜂科和跳小蜂科；捕食性天敌有日本方头甲、捕食螨和捕食性蓟马．寄生蜂自然寄生率最高达７５％．Pseudaulacaspis cockerelli (Cooley) is a serious pest of some species of ornamental plants. The pest develops 6 generations a year and it has not overwintering phenomenon in Fuzhou. The female adults can be seen in the field all the year round. The peaks of the first instar nymph appear in the second ten days of May and the last ten days of June. The pest density is the lowest in August. A female lays 80.8 eggs in average. It has been found that there are 4 species of its parasitic natural enemies. They belong to Aphelinidae and Encyrtidae. Predatory natural enemies are Cybocephalus nipponicus, predatory mite and predatory thrips. The parasited rate of P.cockerelli is up to 75%.

关 键 词：考氏白盾蚧 生物学 种群动态 天敌 

分 类 号：Q969.358.4[生物学—昆虫学] S47[农业科学—农业昆虫与害虫防治]