【作者】 詹根祥； 梁广文； 曾玲； 张维球；

【Author】 Zhan Genxiang Liang Guangwen Zeng Ling Zhang Weiqiu (Lab. Of Insect Ecology. South China Agricultural University. Guangzhou, 510642 China)

【机构】 华南农业大学昆虫生态研究室；

【摘要】 系统对菜豆、豇豆、丝瓜和黄瓜一造蔬菜上寄生蜂对美洲斑潜蝇的寄生作用的调查结果表明,寄生于美洲斑潜蝇的寄生性天敌共有7种,分别为底比斯釉姬小蜂、丽潜蝇姬小蜂、冈崎釉姬小蜂、异角姬小蜂、黄潜蝇姬小蜂、甘蓝潜蝇茧蜂和离潜蝇茧蜂;不同蔬菜上主要寄生蜂所占的比例不同,但底比斯釉姬小蜂在4种蔬菜上占寄生蜂总数的比例始终最高,为第一优势种;在豇豆和黄瓜上丽潜蝇姬小蜂为第二优势种,冈崎釉姬小蜂为第三优势种,而在菜豆和丝瓜上正好相反。蔬菜的不同生育期美洲斑潜蝇主要寄生蜂的数量组成以及寄生蜂在蔬菜不同生育期数量组成均有较大的差异。寄生蜂对一造蔬菜上美洲斑潜蝇幼虫的致死率以前期较低,中期逐渐增加,后期达到高峰,最高达90％以上。更多还原

【Abstract】 The parasitizing effects of parasitoids on vegetable leave miner attacking kidney, cowpea, luffa and cucumber were investigated at Shenzhen, Guangdong province among 3-6, 1999. The results showed that there were 7 species of parasitoids parasitizing vegetable leave miner which were Chrysocharispentheus (Walker), Neuchrysocharis formosa (Westwood), Chrysonotomyia okazakii (Kamijo), Hemiptarsenus varicornis (Girault), Chrysocharis sp. , Opius dimidiatus (Ashmead) and Opius dissitus Muesebeck. The quantities of each species of parasitoid at different kinds of vegetable crops were different, and Chrysocharis pentheus was always the most dominant species among the parasitoids at all the 4 vegetable crops. At kidney bean and cucumber Neuchrysocharis formosa were the second dominant species and Chrysonotomyia okazakii the third, but at cowpea and luffa it was contrast. The quantities of each species of parasitoids at different vegetable growth stages were different also, and the death rate causing by parasitoids was low at the first vegetable growth stage, then increased, and arrived the highest at the third vegetable growth stage which it was above 90% .更多还原