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在河南省原阳县麦区于2002年4～5月期间自空中诱捕到迁飞性有翅麦蚜共1092头,其中麦长管蚜(Sitobion avenae)415头,禾谷缢管蚜(Rhopalosiphum padi)642头,麦无网长管蚜(Metopolophium dirhodum)22头,麦二叉蚜(Schizaphis graminum)13头。每日诱获的有翅蚜带回室内在试管麦苗上单头饲养7d,共发病死亡341头(麦长管蚜224头,禾谷缢管蚜106头,麦二叉蚜3头,麦无网长管蚜8头),全部在饲养的前5天死亡,其中前3天的死亡占78.9％,有翅蚜的总带菌率为31.2％.病死有翅蚜经逐头镜检确认病因,全系虫霉感染所致,其中新蚜虫病霉(Pandora neoaphidis)占84.6％,普朗肯虫霉(Entomophthora planchoniana)占5.5％,暗孢耳霉(Conidiobolus obscurus)占9.9％,另有4例为新蚜虫疠霉和暗孢耳霉的复合感染。基于迁飞性有翅麦蚜高比例带菌和田间麦蚜虫霉流行病的调查资料,可以认为麦蚜的虫霉流行病可能主要借有翅蚜的迁飞定殖而异地传播,并讨论了这种传播方式对蚜虫流行病研究与利用的启示。
A total of 1092 migratory winged wheat aphids were trapped in the wheat area of Yuanyang County, Henan Province from April to May in 2002, of which 415 were Sitobion avenae, Rhopalosiphum padi 642, 22 Metopolophium dirhodum and 13 Schizaphis graminum. The winged aphids caught daily were fed indoors for 7 days on the test-tube wheat seedlings. There were 341 deaths (224 heads of wheat aphid, 106 heads of Aphis gossypii, 3 heads of wheat aphid, All of them were killed in the first 5 days of rearing, of which 78.9% died in the first 3 days and 31.2% in the total number of infected winged aphids. All the strains were caused by Aspergillus infection, of which 84.6% were new to Pandora neoaphidis, 5.5% to Entomophthora planchoniana and 9.9% to Conidiobolus obscurus, and another 4 For the new Aphidium and mildew mold compound infection. Based on the survey data on the high percentage of migrating winged aphids and the wheat aphid epidemic in the field, it can be considered that the insect aphid epidemic may be mainly spread by colonization and migration of winged aphids and discussed Enlightenment of Species Propagation on the Research and Utilization of Aphid Epidemic.