Departamento de Ciências Florestais, Universidade Federal Do Paraná, Av. Pref. Lothário Meissner, 900, Jardim Botânico, Curitiba, Curitiba, Paraná, 80210-170, Brazil.
Departamento de Zoologia, Universidade Federal Do Paraná, Curitiba, Paraná, Brazil.
Microb Ecol. 2023 Aug;86(2):1281-1291. doi: 10.1007/s00248-023-02217-7. Epub 2023 Apr 28.
The leaf-cutting ant Acromyrmex crassispinus is considered an important pest in forest plantations in southern Brazil. This work aimed to study the fungal community associated with A. crassispinus colonies, subjected to treatments with subdoses of granulated baits (sulfluramid), which might reduce the ability of the ants to care for their symbiotic fungus and other fungi (maybe biocontrol fungi) would take over, to prospect for potential biological control agents. Samplings of fungus gardens and dead ants allowed the identification of 195 fungal isolates, distributed in 29 families, 36 genera, and 53 species. The most frequent genera were Trichoderma (49.2%), Penicillium (13.8%), Chaetomium (6.2%), and Fusarium (3.6%). This is the first study that conducted a survey of antagonistic and entomopathogenic fungi to A. crassispinus and its symbiotic fungus, reporting for the first time the occurrence of potential biological control agents. Escovopsis weberi, Fusarium oxysporum, Rhizomucor variabilis, Trichoderma atroviride, Trichoderma harzianum, Trichoderma koningiopsis, and Trichoderma spirale are considered some of the potential biocontrol organisms.
切叶蚁 Acromyrmex crassispinus 被认为是巴西南部森林人工林的重要害虫。本研究旨在研究与 A. crassispinus 蚁群相关的真菌群落，这些蚁群接受了颗粒状诱饵（磺胺甲恶唑）的亚剂量处理，这可能会降低蚂蚁照顾其共生真菌的能力，而其他真菌（可能是生物防治真菌）可能会接管，以寻找潜在的生物防治剂。菌圃和死蚁的采样允许鉴定出 195 个真菌分离物，分布在 29 个科、36 个属和 53 个种中。最常见的属是木霉属（49.2%）、青霉属（13.8%）、毛壳菌属（6.2%）和镰刀菌属（3.6%）。这是首次对 A. crassispinus 及其共生真菌进行拮抗和昆虫病原真菌调查的研究，首次报道了潜在生物防治剂的发生。韦伯拟青霉、尖孢镰刀菌、多变根毛霉、深绿木霉、哈茨木霉、康宁木霉和螺旋木霉被认为是一些潜在的生物防治生物。
