Non-crop plants are important for the fitness and abundance of coccinellids in conservation biological control. The objectives of this study were to evaluate the impact of four frequently used non-crop plant species in habitat management, i.e., Vicia sativa (Fabaceae), Fagopyrum esculentum (Polygonaceae), Coriandrum sativum (Apiaceae) and Calendula officinalis (Asteraceae) on the longevity, prey consumption, weight and fecundity of the multicolored Asian ladybeetle Harmonia axyridis (Coleoptera: Coccinellidae). Under laboratory conditions, provision of V. sativa, F. esculentum and C. sativum significantly increased longevity, but only F. esculentum significantly reduced daily weight loss of adult females compared to water only (when no prey was provided). Feeding on plant food resources from these non-crop plants reduced prey consumption and, with the exception of V. sativa, greatly decreased daily weight gain of both adult females and males in the presence of Ephestia kuehniella eggs. Feeding H. axyridis females with both non-crop plants and aphids had no effect on the pre-oviposition period when compared with aphids only. However, the presence of C. sativum led to an increase of H. axyridis fecundity, whereas presence of C. officinalis led to a 22% decrease in ladybeetle fecundity (when compared to the treatment with only aphids). Vicia sativa, F. esculentum and especially C. sativum showed benefits on the survival and/or reproduction of H. axyridis and may be candidates for non-crop plants that are used to diversify agro-ecosystems to boost biological control. Calendula officinalis, however, could be intercropped as a companion plant in H. axyridis-invaded areas to enhance the competitiveness of native biological control agents (pending C. officinalis does not impact negatively these species).

中文翻译：

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四种非农作物对瓢虫Harmonia axyridis生活史特征的影响

非作物植物对于球虫的适应度和丰富度在保护生物控制中很重要。这项研究的目的是评估四种常用的非作物植物物种在生境管理中的影响，即蚕豆（Fabaceae），番茄（Fagopyrum esculentum）（Polygonaceae），Cor（Capirandrum sativum）（Apiaceae）和金盏菊（Asteraceae）（Asteraceae）。多彩的亚洲瓢虫Harmonia axyridis（鞘翅目：瓢虫科）的寿命，猎物消耗，体重和繁殖力。在实验室条件下，与仅饮水（不提供猎物）相比，提供豌豆（V. sativa），番茄（F. esculentum）和番茄（C. sativum）可显着延长寿命，但只有番茄（F. esculentum）可显着减少成年雌性的每日体重减轻。依靠这些非农作物的植物食物资源为食，减少了猎物的消耗，并且，除V. sativa之外，在存在埃弗氏杆菌卵的情况下，成年雌性和雄性的日增重大大降低。与仅与蚜虫相比，用非农作物和蚜虫喂养食轴螺旋藻雌性对产卵前期没有影响。但是，金黄色葡萄球菌的存在会导致木虱的产卵能力增加，而山茱。的存在会导致瓢虫的产卵能力下降22％（与仅使用蚜虫的处理相比）。蚕豆（Vicia sativa），番茄（F. esculentum），尤其是番茄（C. sativum）显示出对木糖螺旋藻（H. ayyridis）的存活和/或繁殖有好处，并且可能是非农作物的候选品种，这些农作物用于农业生态系统的多样化以促进生物防治。然而，金盏花可以作为H的伴生植物间作。