| 摘要: |
| １９９１～１９９２年在陕北和关中系统调查，初步查明芦笋小管蚜（Brachycorynella asparagi Mordvilko）的天敌有４０种，其中蚜茧蜂２种，蚜霉菌１种，瓢虫１１种，草蛉４种，食蚜蝇７种，捕食蝽５种，蜘蛛１０种。主要类群为瓢虫，陕北以多异瓢虫Hippodamia (Adonia) Veriedata (Oeze)为主，关中的七星瓢虫Coccinella septenlpunctata L.和异色瓢虫Harmonia axridis (Palaas)最多。陕北的天敌数量比关中多１．１８倍。天敌高峰关中为６月中旬，陕北为７月１０日左右，略晚于蚜虫高峰。异色瓢虫捕食芦笋小管蚜的功能反应研究表明，随着虫龄的增大，瓢虫对猎物的处理时间缩短，取食量增大。成虫处理猎物的时间极短，但取食量则较低。 |
| 关键词: 芦笋害虫，芦笋小管蚜，天敌，消长规律，异色瓢虫，功能反应 |
| DOI： |
| 分类号:S47 |
| 基金项目: |
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| Studies on Natural Enemies of Asparagus Aphid,Brachycorynella asparagi |
|
Li Xiulian Zhu Xiangsan Yuan Feng,Li Xiulian Zhu Xiangsan Yuan Feng,Li Xiulian Zhu Xiangsan Yuan Feng
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| Abstract: |
| 40 species of the natural enemies of the asparagus aphid,Brachycorynella asparagi Mordvilko were found between 1991 and 1992. There were two kinds of aphid parasites, one kind of Entomophthora spp.,eleven kinds of Coccinellidae , four kinds of Chrysopidae,seven kinds of Syrphidae,one kind of Miridae,one kind of Lygaeidae , two knids of Nabidae ,one kind of Anthocoridae and ten kinds of spiders. The Coccinellidae accounted for the most. The main enemy in North ShaanxiProvince is Hippodamia (Adonia) Veriedata (Oeze), but in the centre of Shaanxi was Coccinella septenlpunctata L. and Harmonia axridis (Palaas).The peak period was in the middle of June in the Centre and the 10th of July in the North,with the latter occurring later than the peak of asparagus aphid.The number of natural enemies in North Shaanxi was 1. 18 times more than that in the centre of Shaanxi. The study of the functional responses of lady birds(Harmonia axyridis)to the aphid indicated that the appetite of the growing Coccinellidae increased,though it shortened its meal time;while the appetite of the adult decreased, though with the least meal time. |
| Key words: Asparagus,Brachycorynella asparagi,biology,ecology,asparagus pest |
