摘要
烟蚜茧蜂是蚜类害虫的优势寄生性天敌,室内大规模扩繁条件下,开展了烟蚜茧蜂对7种寄主蚜虫的寄生率与子代发育特征研究,比较了以不同寄主繁育的烟蚜茧蜂在体型大小、回接寄生率、羽化率和性比等重要生物学特性上的差异。结果表明,烟蚜茧蜂对棉蚜和禾谷缢管蚜的寄生率极低,分别为0.5%和0;对烟蚜和麦二叉蚜的寄生率较高,分别为53.13%和51.83%,且显著高于其它处理。利用麦二叉蚜繁育的烟蚜茧蜂羽化率为90.34%,雌蜂发育历期为11.47 d,雌性比例为61.08%,与利用烟蚜繁育的烟蚜茧蜂无显著差异,且其对烟蚜亦有较高寄生率。结合考虑扩繁周期、成本、时-空利用率等因素,麦二叉蚜有望作为扩繁寄主应用于烟蚜茧蜂的规模化繁殖生产。
The mummification rate of an indigenous natural enemy, Aphidius gifuensis Ashmead on different hosts were investigated. The tested hosts included Aphis glycines, A. gossypii, Brevicoryne brassicae, Lipaphis erysimi, Myzus persicae, Rhopalosiphum padi and Schizaphis graminum. Emergence rate, developmental period, offspring female proportion and body size of A. gifuensis were compared between different hosts. The mummification rate reared on R. padi and A. gossypii were very low. M. persicae and S. graminum were promising hosts, with mummification rate of 53.13%and 51.83%. The emergence rate, female development period and offspring female proportion in A. gifuensis reared on S. graminum were 90.34%, 11.47 d and 61.08%, respectively, which were not significantly different from those of A. gifuensis offspring reared on M. persicae. A. gifuensis reared on S. graminum showed successful parasitic performance on M. persicae. These results indicate that S. graminum could be a promising host for mass rearing and application of A. gifuensis.
出处
《中国生物防治学报》
CSCD
北大核心
2014年第1期32-37,共6页
Chinese Journal of Biological Control
基金
国家自然科学基金项目(31071742)
公益性行业(农业)科研专项(201103002)
国家"973"项目(2013CB127602)
关键词
烟蚜茧蜂
麦二叉蚜
烟蚜
寄主
大规模繁育
Aphidius gifuensis
Schizaphis graminum
Myzus persicae
host
mass rearing
