Conde-Bravo Juan Carlos, Fernández-Bravo María, Garrido-Jurado Inmaculada, Yousef-Yousef Meelad, Quesada-Moraga Enrique
Laboratory of Agricultural Entomology, Department of Agronomy, María de Maeztu Excellence Unit DAUCO, ETSIAM, University of Cordoba, Cordoba, Spain.
Front Insect Sci. 2025 Apr 21;5:1579244. doi: 10.3389/finsc.2025.1579244. eCollection 2025.
(Fallén) (Hemiptera: Aphrophoridae) is among the most abundant, highly dispersible, and widely distributed Wells (Xanthomonadales: Xanthomonadaceae) vectors to olive tree in Europe, with emphasis in Andalucía. The development of efficient and environmentally friendly vector management strategies is greatly needed. Entomopathogenic ascomycetes are among the few alternatives for the microbial control of pierce-sucking spittlebugs due to their unique contact mode and ability to endophytically colonize crops. These characteristics allow for several strategic uses aimed at reducing vector populations and/or their disease transmission potential. This study included a two-year field experiment to evaluate the Petch. (Ascomycota: Hypocreales) strain EAMa 01/58-Su sprayed onto population naturally present in the olive grove cover in Cordoba (Spain).
Experiments were conducted in early spring, and efficacy was evaluated using the Henderson-Tilton formula, as well as by analyzing changes in the relative population density of both nymphs and adults.
The fungus was detected in the soil and endophytically in the natural cover throughout the 8 days monitoring period, in which the fungal treatment significantly reduced both the nymph and the adult populations. Notably, the efficacy of the fungal treatment was 100.0% and 85.0% for foams and adults in 2023, and 62.5% and 72.0% for foams and adults in 2024, respectively. Results indicate a significant reduction in the population density of both vector developmental stages, highlighting the potential of this fungal strain for managing vectors in olive cover crops.
（法伦沫蝉）（半翅目：沫蝉科）是欧洲橄榄树最常见、扩散性最强且分布最广的传毒媒介之一，在安达卢西亚地区尤为突出。因此，迫切需要制定高效且环保的传毒媒介管理策略。昆虫病原子囊菌因其独特的接触方式以及在作物内寄生定殖的能力，是少数可用于微生物防治刺吸式沫蝉的方法之一。这些特性使其能用于多种旨在减少传毒媒介数量和/或其疾病传播潜力的策略。本研究开展了一项为期两年的田间试验，以评估喷洒在西班牙科尔多瓦橄榄园自然植被上的拟青霉属（子囊菌门：肉座菌目）菌株EAMa 01/58 - Su对自然存在的沫蝉种群的影响。
试验于早春进行，使用亨德森 - 蒂尔顿公式评估防治效果，并分析若虫和成虫相对种群密度的变化。
在为期8天的监测期内，在土壤和自然植被中均检测到了该真菌，真菌处理显著减少了若虫和成虫数量。值得注意的是，2023年真菌处理对若虫和成虫的防治效果分别为100.0%和85.0%，2024年对若虫和成虫的防治效果分别为62.5%和72.0%。结果表明两个传毒媒介发育阶段的种群密度均显著降低，凸显了该真菌菌株在管理橄榄覆盖作物传毒媒介方面的潜力。
