Quality of Different Aphids Species as Hosts for the Parasitoid Aphidius ervi Haliday (Hymenoptera: Braconidae: Aphidiinae)

被引:11
|
作者
Sidney, Livia A. [1 ]
Bueno, Vanda H. P. [1 ]
Lins, Juracy C., Jr. [1 ]
Silva, Diego B. [2 ]
Sampaio, Marcus V. [3 ]
机构
[1] Univ Fed Lavras, Dept Entomol, BR-37200000 Lavras, MG, Brazil
[2] Ctr Univ Lavras, BR-37200000 Lavras, MG, Brazil
[3] Univ Fed Uberlandia, Inst Ciencias Agr, BR-38400902 Uberlandia, MG, Brazil
关键词
Biological control; host quality; development; BIOLOGICAL-CONTROL; BODY-SIZE; RHOPALOSIPHI; TEMPERATURE; ASSOCIATION; BEHAVIOR; WASP;
D O I
10.1590/S1519-566X2010000500006
中图分类号
Q96 [昆虫学];
学科分类号
摘要
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 +/- 1 degrees C, 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 2(nd) and 3(rd) 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).
引用
收藏
页码:709 / 713
页数:5
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