Micobiota associada a adultos do escaravelho das palmeiras (hynchophorus ferrugineus) provenientes de Cascais, Portugal

Ramos, Ana Paula; Rocha, Marta; Belchior, Sara; Peixoto, Rui; Caetano, Filomena; Lima, Ana

doi:10.19084/rca.16918

Cited by 1 publication

(3 citation statements)

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“…In this study, most of the identified genera are widely recognized in the literature as saprophytes or potential agents of plant diseases, notable for their broad distribution across various ecosystems and their remarkable adaptability to a variety of substrates and ecological niches (Ramos et al, 2015). These genera predominantly belong to the phylum Ascomycota, with a total of eight identified genera, and one genus belongs to the phylum Basidiomycota (Trichosporon spp.…”

Section: Resultsmentioning

confidence: 99%

“…However, some studies have been conducted with R. ferrugineus. Ramos et al (2015) identified 59 species of fungi associated with various structures of R. ferrugineus, including the rostrum/antennae, elytra, legs, and samples of internal organs, in Portugal. The majority of the species found in the aforementioned study are known to be saprophytic or phytopathogenic.…”

Section: Resultsmentioning

confidence: 99%

“…In addition to its role as a vector of T. paradoxa, insects such as R. palmarum can engage in mutualistic interactions with various groups of fungi. These interactions encompass fungi that serve as a food source (Ambrosia fungi), fungi that can act as primary pathogens, opportunistic pathogens, or secondary colonizers, and occasional interactions with fungi that may be transported by the insects, regardless of their potential as phytopathogens (Ramos et al, 2015). Additionally, these arthropods can become infected by entomopathogenic fungi, which are commonly used as biological control agents for insect pests (Pedrini, 2018), emphasizing the importance of identifying the mycobiota associated with R. palmarum.…”

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Thielaviopsis paradoxa and cultivable mycobiota associated with carapace of Rhynchophorus palmarum L. (Coleoptera: Curculionidae) in the state of Alagoas, Brazil

Calumby,

Almeida,

Eliziario

et al. 2023

Braz. J. Biol.

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Rhynchophorus palmarum (Coleoptera: Curculionidae) is a significant agricultural pest in palm plantations across tropical America, playing a critical role as a vector of the fungus Thielaviopsis paradoxa, which is the causative agent of stem bleeding disease in coconut palms. This disease has raised concerns due to its rapid spread and subsequent reduction in coconut production in northeastern Brazil. Additionally, this insect can establish mutualistic interactions with various fungi, including saprophytic, phytopathogenic, and entomopathogenic fungi, underscoring the importance of identifying its external mycobiota. The aim of this study was to assess the presence of T. paradoxa in the digestive tract and identify the cultivable mycobiota associated with the carapace of R. palmarum. To achieve this, a mycological study was conducted by culturing the external surface and digestive tract of field-caught adult insects (10 males and 10 females) on potato dextrose agar (PDA) in Maceió, Alagoas, Brazil. Fungal identification was performed by correlating microscopic features with the macroscopic characteristics of the obtained colonies. The results showed that T. paradoxa was detected in 15.0% of carapace isolates but was not found in the insects' intestinal tract. Additionally, nine fungal genera frequently associated with saprophytic or phytopathogenic behaviors were identified on the carapace. Eight of these genera belong to the Ascomycota phylum, while one is classified in the Basidiomycota phylum. The ubiquitous presence of Paecilomyces spp. and the occurrence of Trichosporon spp. in 95% of the assessed insects stand out. Furthermore, other potentially phytopathogenic fungi such as Penicillium spp., Fusarium spp., and Aspergillus spp., as well as fungi with entomopathogenic potential like Paecilomyces spp., Trichoderma spp., Metarhizium spp., and Beauveria bassiana, were detected. These findings enhance the understanding of the complex interactions between R. palmarum and its fungal hosts, providing insights for integrated pest management strategies.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

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