[不同蚜虫物种作为寄生蜂豌豆蚜茧蜂（膜翅目：茧蜂科：蚜茧蜂亚科）寄主的质量]

[Quality of different aphids species as hosts for the parasitoid Aphidius ervi Haliday (Hymenoptera: Braconidae: Aphidiinae)].

作者信息

Sidney Lívia A, Bueno Vanda H P, Lins Juracy C, Silva Diego B, Sampaio Marcus V

机构信息

Depto de Entomologia, Univ Federal de Lavras, Lavras, MG, Brazil, 37200-000.

出版信息

Neotrop Entomol. 2010 Sep-Oct;39(5):709-13. doi: 10.1590/s1519-566x2010000500006.

DOI:10.1590/s1519-566x2010000500006

PMID:21120377

Abstract

The suitability of Macrosiphum euphorbiae (Thomas), Aulacorthum solani (Kaltenbach) and Acyrthosiphon kondoi Shinji (Hemiptera: Aphididae) as hosts for the aphid parasitoid Aphidius ervi Haliday was evaluated by assessing host size, host preference, and host quality. Tests were carried out in an environmental chamber at 22±1ºC, 70±10% RH and 12h photophase. Replicates (11) consisted of one 24h-old mated female of A. ervi without a previous oviposition experience. Female was released into a Petri dish (5 cm) with 20 2nd and 3rd instars of one of each aphid species tested on a leaf disc of the host plant onto a 1% water-agar layer. Parasitoid emergency was lower in A. kondoi (78.7%) compared to M. euphorbiae (92.2%) and A. solani (91.7%). Acyrthosiphon kondoi (0.36 mm) was the smallest host. The parasitoid showed preference (74.0% parasitism) for M. euphorbiae, the largest host (hind tibia length=0.73 mm), which in turn yielded larger A. ervi females (0.75 mm).

摘要

通过评估寄主大小、寄主偏好和寄主质量，对大戟长管蚜（Thomas）、茄沟无网蚜（Kaltenbach）和苜蓿蚜（Shinji，半翅目：蚜科）作为蚜虫寄生蜂——豌豆蚜茧蜂（Haliday）的寄主适宜性进行了评估。试验在环境箱中进行，温度为22±1℃，相对湿度为70±10%，光周期为12小时。重复试验（11次）包括一只24小时龄、未产卵的已交配豌豆蚜茧蜂雌虫。将雌虫放入一个直径5厘米的培养皿中，培养皿中有20只每种受试蚜虫的2龄和3龄若虫，放置在寄主植物的叶盘上，叶盘置于1%的水琼脂层上。与大戟长管蚜（92.2%）和茄沟无网蚜（91.7%）相比，苜蓿蚜中的寄生蜂羽化率较低（78.7%）。苜蓿蚜（0.36毫米）是最小的寄主。寄生蜂对最大的寄主大戟长管蚜（后胫节长度=0.73毫米）表现出偏好（寄生率74.0%），而大戟长管蚜又能培育出体型更大的豌豆蚜茧蜂雌虫（0.75毫米）。