Silva R J, Cividanes F J, Pedroso E C, Sala S R D
Departamento Fitossanidade, FCAV, UNESP, Jaboticabal, SP, Brasil.
Neotrop Entomol. 2011 Jul-Aug;40(4):477-82.
This study aimed to evaluate the quality of the aphid Myzus persicae (Sulzer), Lipaphis erysimi (Kaltenbach) and Brevicoryne brassicae (L.) as hosts for the parasitoid Diaeretiella rapae (McIntosh). Parasitization by D. rapae was higher on M. persicae than on L. erysimi and B. brassicae. The time of development of D. rapae from egg to mummy or egg to adult male or female were shorter on M. persicae than on L. erysimi and B. brassicae. Moreover, D. rapae showed no significant differences in the emergence rate, sex ratio and longevity when reared on the three aphid species. Myzus persicae was the largest aphid host, with B. brassicae and L. erysimi being of intermediate and of small size, respectively. Diaeretiella rapae reared on M. persicae was larger than when reared on L. erysimi and B. brassicae, and females of D. rapae were significantly larger than males on M. persicae, but males of D. rapae were larger than females when reared on L. erysimi. No difference in size was detected between males and females in parasitoids reared on B. brassicae. Among the aphid species studied, M. persicae was found to be the most suitable to D. rapae.
本研究旨在评估桃蚜（Myzus persicae (Sulzer)）、甘蓝蚜（Brevicoryne brassicae (L.)）和萝卜蚜（Lipaphis erysimi (Kaltenbach)）作为寄生蜂菜蚜茧蜂（Diaeretiella rapae (McIntosh)）寄主的质量。菜蚜茧蜂对桃蚜的寄生率高于对甘蓝蚜和萝卜蚜的寄生率。菜蚜茧蜂从卵发育到僵蚜或从卵发育到成年雄蜂或雌蜂在桃蚜上的发育时间比在甘蓝蚜和萝卜蚜上短。此外，在这三种蚜虫上饲养时，菜蚜茧蜂在羽化率、性别比和寿命方面没有显著差异。桃蚜是最大的蚜虫寄主，甘蓝蚜和萝卜蚜分别为中等大小和小体型。在桃蚜上饲养的菜蚜茧蜂比在甘蓝蚜和萝卜蚜上饲养的更大，且在桃蚜上饲养时菜蚜茧蜂的雌蜂显著大于雄蜂，但在萝卜蚜上饲养时菜蚜茧蜂的雄蜂大于雌蜂。在甘蓝蚜上饲养的寄生蜂中，未检测到雄蜂和雌蜂在大小上的差异。在所研究的蚜虫种类中，发现桃蚜最适合菜蚜茧蜂。
