Kim Jeong Jun, Kim Kyu Chin, Roberts Donald W
Applied Entomology Division, NIAST, RDA, Sedundong 249, Suwon 441-707, Republic of Korea.
J Invertebr Pathol. 2005 Mar;88(3):254-6. doi: 10.1016/j.jip.2005.01.004. Epub 2005 Feb 22.
The parasitoid Aphidius colemani developed normally (approximately 90% adult emergence) when its cotton aphid (Aphis gossypii) host was treated with Verticillum lecanii conidia 5 or 7 days after parasitization. Fungus exposure 1 day before or up to 3 days after parasitization, however, reduced A. colemani emergence from 0 to 10%. Also, numbers of spores and mycelial fragments in aphid homogenates were much higher in aphids exposed to the fungus up to 3 days after parasitization than in aphids treated after 5 or 7 days. Our results suggest that the parasitoid and fungus may be used together for aphid biocontrol as long as fungus applications are timed to allow late-instar development of the parasitoid.
当寄生蜂科尔曼蚜茧蜂（Aphidius colemani）的棉蚜（Aphis gossypii）寄主在寄生后5天或7天用玫烟色蜡蚧轮枝菌（Verticillum lecanii）分生孢子处理时，该寄生蜂发育正常（成虫羽化率约为90%）。然而，在寄生前1天或寄生后3天内接触真菌，会使科尔曼蚜茧蜂的羽化率从0降至10%。此外，与在寄生后5天或7天处理的蚜虫相比，在寄生后3天内接触真菌的蚜虫匀浆中的孢子和菌丝片段数量要高得多。我们的结果表明，只要安排好真菌的施用时间，以便寄生蜂发育到老龄期，寄生蜂和真菌就可以一起用于蚜虫的生物防治。
