Beserra E B, Dias C T, Parra J R P
Departamento de Farfácia e Biologia, Universidade Estadual da Paraiba, C.P. 781/791, CEP 58100-000, Campina Grande, PB, Brazil.
Braz J Biol. 2005 Feb;65(1):9-17. doi: 10.1590/s1519-69842005000100003.
In this study we analyzed the impact of physical barriers of Spodoptera frugiperda (J. E. Smith) egg-masses on the behavior of Trichogramma atopovirilia Oatman & Platner and Trichogramma pretiosum Riley. The duration of drumming, drilling, oviposition, period spent over the egg-mass, and interval between parasitized eggs were timed, and the number of parasitized eggs were recorded. The presence of scales on the egg-masses caused a significant increase in the time spent by both parasitoids on each process and a decrease in the residence time over the egg-mass and in the number of parasitized eggs, with an increase in the number of egg layers. There was a significant decrease in the number of parasitized eggs in relation to egg-masses with one layer and no scales. We observed that the physical barriers in fall armyworm egg-masses changed the behavior of T. atopovirilia and T. pretiosum, affecting their parasitization capacity.
在本研究中，我们分析了草地贪夜蛾（J. E. 史密斯）卵块的物理屏障对顶蛾赤眼蜂（Oatman & Platner）和短管赤眼蜂（Riley）行为的影响。对敲击、钻孔、产卵的持续时间、在卵块上停留的时间以及被寄生卵之间的间隔进行了计时，并记录了被寄生卵的数量。卵块上鳞片的存在导致两种寄生蜂在每个过程上花费的时间显著增加，在卵块上的停留时间和被寄生卵的数量减少，卵层数量增加。与单层且无鳞片的卵块相比，被寄生卵的数量显著减少。我们观察到，草地贪夜蛾卵块中的物理屏障改变了顶蛾赤眼蜂和短管赤眼蜂的行为，影响了它们的寄生能力。
