This study investigates the influence of parasitoid age and egg age of the hosts Euschistus heros (Fabricius) and Dichelops melacanthus (Dallas) on parasitism of Telenomus podisi Ashmead. Six separate bioassays were conducted: parasitism on eggs of E. heros (bioassay 1) and D. melacanthus (bioassay 2) by T. podisi females of different age (1, 5, and 10 days old); parasitism by T. podisi on eggs of different age (1, 2, 3, 4, and 5 days of embryonic development) of the hosts E. heros (bioassay 3) and D. melacanthus (bioassay 4); preference of T. podisi females for eggs at different embryonic developmental stages (eggs of 1, 2, 3, 4, and 5 days) of the hosts E. heros (bioassay 5) and D. melacanthus (bioassay 6). The age of T. podisi females and their hosts affected parasitism on both E. heros and D. melacanthus eggs. Overall, the parasitism rate was higher in older than younger parasitoids, independent of the tested host species, and host eggs between 1 and 3 days old were similarly parasitized. Thus, in T. podisi mass rearing facilities, it is recommended to use older adults (5 to 10 days old) as mother wasps to increase parasitism on the offered eggs. In addition, when hosts are completely absent in the field, or climatic conditions are unfavorable for release, mass-reared adults can be kept in the laboratory (25°C) for up to 10 days for later release in the field without any impairment of their subsequent parasitism performance.

中文翻译：

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寄生卵和寄主卵的年龄对Telenomus podisi（膜翅目：Platygastridae）寄生的影响。

这项研究调查了寄主Euschistus英雄（Fabricius）和Dichelops melacanthus（Dallas）的寄生物年龄和卵龄对Telenomus podisi Ashmead寄生的影响。六个独立的生物测定进行：寄生上的蛋E.英雄（生物测定1）和D. melacanthus（生物测定法2）通过T. podisi不同年龄的女性（1，5，和10天龄）; T. podisi对寄主E. heros（生物测定法3）和D. melacanthus（生物测定法4）的不同年龄（胚胎发育的1、2、3、4和5天胚胎发育）的卵具有寄生性；偏好T. podisi雌性用于宿主E. heros（生物测定法5）和D. melacanthus（生物测定法6）的不同胚胎发育阶段（1、2、3、4和5天的卵）的卵。T. podisi雌性及其寄主的年龄影响了E.英雄和D. melacanthus卵的寄生性。总体而言，年龄较大的寄生虫的寄生虫发生率高于年轻的寄生虫，与所测试的寄主物种无关，并且在1-3天大的寄主卵中也被寄生。因此，在T. podisi大规模饲养设施，建议使用大人（5至10天大）作为母蜂来增加所提供卵的寄生性。此外，当宿主在田间完全不存在或气候条件不利于释放时，可以将大量繁殖的成虫在实验室（25°C）下保存长达10天，以便以后在田间释放，而不会损害他们随后的寄生表现。