Key Laboratory of State Forestry and Grassland Administration on Forest Ecosystem Protection and Restoration in Poyang Lake Watershed, College of Forestry, Jiangxi Agriculture University, Nanchang, China.
Jiangxi Environmental Engineering Vocational College, Ganzhou, China.
J Econ Entomol. 2020 Dec 9;113(6):2634-2640. doi: 10.1093/jee/toaa212.
The coleopteran parasitoid Dastarcus helophoroides (Fairmaire) (Coleoptera: Bothrideridae) is considered an efficient preventative method against the damage caused by a large number of cerambycid pests in China and other East Asian countries. Mass rearing of this parasitoid depends on screening appropriate factitious hosts. In this paper, the fitness-related traits of this parasitic beetle were explored using pupae of the two tenebrionid beetles, Tenebrio molitor Linnaeus and Zophobas morio Fabricius (Coleoptera: Tenebrionidae) as factitious hosts. The results showed that in dual-choice trials, D. helophoroides larvae preferred to attack Z. morio pupae. In no-choice trials, D. helophoroides reared on Z. morio pupae displayed significantly higher pupation and emergence rate, longer developmental duration of larval and larval-pupal stages, larger adult body size, shorter preoviposition period, more egg masses and egg production, and higher relative expected reproduction than those reared on T. molitor pupae. These results demonstrate that Z. morio is a more suitable factitious host for mass rearing of D. helophoroides.
鞘翅目寄生蜂 Dastarcus helophoroides（Fairmaire）（鞘翅目：Bothrideridae）被认为是一种有效的预防方法，可以防止中国和其他东亚国家的大量天牛害虫造成的损害。这种寄生蜂的大规模繁殖依赖于筛选合适的人工饲养寄主。在本文中，使用两种鞘翅目拟步甲，黄粉虫（Tenebrio molitor Linnaeus）和暗黑鳃金龟（Zophobas morio Fabricius）（鞘翅目：拟步甲科）的蛹作为人工饲养寄主，探讨了这种寄生甲虫的与适应性相关的特征。结果表明，在双选择试验中，D. helophoroides 幼虫更喜欢攻击 Z. morio 蛹。在非选择试验中，在 Z. morio 蛹上饲养的 D. helophoroides 蛹化和羽化率显著更高，幼虫和幼虫-蛹期的发育时间更长，成虫体型更大，产卵前期更短，产卵量和产卵量更高，相对预期繁殖率更高，而在 T. molitor 蛹上饲养的则更低。这些结果表明，Z. morio 是 D. helophoroides 大规模繁殖的更合适的人工饲养寄主。
