Assessment of the suitable egg density for parasitism by T. armigera

The experiments consisted of determining the egg density needed for T. armigera parasitism. The test was carried out with 3 different host species (C. ignefusalis, C. cephalonica, and H. albipunctella). For each host species, the treatments were as follows: i) one (1) T. armigera female confined with 10 eggs of one host species; ii) one (1) T. armigera female confined with 30 eggs of one host species; and iii) one (1) T. armigera female confined with 125 eggs of one host species. For each treatment and each host species, we used 12 replicates. The female parasitoid and eggs were confined for 6 days, corresponding to the period in which new progeny will start emerging. Data on parasitism and emerging adults was collected.本实验旨在确定T. armigera寄生所需的寄主卵密度。实验选用3种不同寄主物种（C. ignefusalis、C. cephalonica及H. albipunctella）开展。针对每种寄主物种，设置如下3组处理：i）将1头T. armigera雌成虫与10粒同种寄主卵共同置于封闭环境中饲养；ii）将1头T. armigera雌成虫与30粒同种寄主卵共同置于封闭环境中饲养；iii）将1头T. armigera雌成虫与125粒同种寄主卵共同置于封闭环境中饲养。每组处理及每种寄主物种均设置12次生物学重复。将寄生蜂雌成虫与寄主卵共同封闭饲养6天，该时长对应子代寄生蜂开始羽化的周期。实验收集了寄生情况及羽化成虫的相关数据。