Conservation biological control (CBC) aims to enhance pest regulation/suppression by intentionally attracting, retaining, and promoting the fitness and effectiveness of natural enemies. Due to carbohydrate sources being highly limited in agroecosystems, providing alternative carbohydrate sources (i.e., nectar sugars, starches) can enhance the survival, fecundity, and effectiveness of natural enemies. Under laboratory conditions, we analyzed five flowering non-crop plant species in habitat management on the longevity, egg load, and reproductive performance of the parasitoid, Aenasirus bambawalei Hayat (Hymenoptera: Encyrtidae), a key natural enemy of mealybug Phenacoccus solenopsis (Hemiptera: Pseudococcidae). Moreover, we measured the influence of the flowering candidates on the host preference and population growth of P. solenopsis. All five flowering non-crop plant species, Fagopyrum esculentum (Polygonaceae), Tagetes erecta (Asteraceae), Vicia faba (Fabaceae), Lobularia maritima (Brassicaceae), and Coriandrum sativum (Apiaceae) promoted the longevity and egg load of A. bambawalei when compared with water only. However, only the females fed on F. esculentum, V. faba, and L. maritima produced 16% and 13% higher total offspring and female offspring than on water, respectively. None of these five non-crop plant species increased the population of mealybugs on crop plants or in the overall system (non-crop plants + crop plants), and there was no significant difference in their abundance across the five different plant combinations. All five flowering candidates positively affected the longevity and/or reproductive capabilities of A. bambawalei without causing an increase in the population of mealybugs on crop plants.

中文翻译：

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添加非作物植物可以提高马铃薯植株的寄生类适应度，但不能提高害虫密度


保护性生物防治 （CBC） 旨在通过有意识地吸引、保留和促进天敌的健康和有效性来加强害虫监管/抑制。由于农业生态系统中的碳水化合物来源高度有限，因此提供替代碳水化合物来源（即花蜜糖、淀粉）可以提高天敌的生存、繁殖力和有效性。在实验室条件下，我们分析了栖息地管理中五种开花非作物植物物种对寄生虫 Aenasirus bambawalei Hayat（膜翅目：Encyrtidae）的寿命、卵负荷和繁殖性能，这是粉蚧 Phenacoccus solenopsis （半翅目：假球虫科） 的主要天敌。此外，我们测量了开花候选者对 P. solenopsis 寄主偏好和种群增长的影响。与仅浇水相比，所有五种开花非作物植物物种，Fagopyrum esculentum （蓼科）、Tagetes erecta （菊科）、Vicia faba （豆科）、Lobularia maritima （十字花科） 和 Coriandrum sativum （伞形科） 促进了 A. bambawalei 的寿命和卵负荷。然而，只有以 F. esculentum、V. faba 和 L. maritima 为食的雌性产生的总后代和雌性后代分别比在水中高 16% 和 13%。这 5 种非农作物物种均未增加农作物或整个系统 （非农作物 + 农作物） 中粉蚧的数量，并且在 5 种不同的植物组合中它们的丰度没有显著差异。所有 5 种开花候选者都对 A. bambawalei 的寿命和/或繁殖能力产生了积极影响，而不会导致农作物上粉蚧数量的增加。