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Gut microbiome of the emerald ash borer, Agrilus planipennis Fairmaire, and its relationship with insect population density

Mogouong, Judith, Constant, Philippe ORCID: https://orcid.org/0000-0003-2739-2801, Lavallée, Robert et Guertin, Claude ORCID: https://orcid.org/0000-0002-0710-6970 (2020). Gut microbiome of the emerald ash borer, Agrilus planipennis Fairmaire, and its relationship with insect population density FEMS Microbiology Ecology , vol. 96 , nº 8. p. 1-12. DOI: 10.1093/femsec/fiaa141.

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Résumé

The gut microbial communities of beetles play crucial roles in their adaptive capacities. Environmental factors such as temperature or nutrition naturally affect the insect microbiome, but a shift in local conditions like the population density on a host tree could also lead to changes in the microbiota. The emerald ash borer (EAB), Agrilus planipennis Fairmaire, is an exotic wood borer that causes environmental and economic damage to ash trees in North America. This study aimed to describe the taxonomic structure of the EAB gut microbiome and explore its potential relationship with borer population size. The number of EAB adults collected per tree through a 75 km transect from an epicenter allowed the creation of distinct classes of population density. The Gammaproteobacteria and Ascomycota predominated in bacterial and fungal communities respectively, as determined by sequencing of the bacterial 16S rRNA gene and the fungal internal transcribed spacer ITS2. Species richness and diversity of the bacterial community showed significant dependence on population density. Moreover, alpha-diversity and beta-diversity analysis revealed some indicator amplicon sequence variants suggesting that the plasticity of the gut microbiome could be related to the EAB population density in host trees.

Type de document: Article
Informations complémentaires: document fiaa141
Mots-clés libres: Agrilus planipennis Fairmaire; disturbance; emerald ash borer; gut microbiota; insect population size; microbial community; α-diversity; β-diversity
Centre: Centre INRS-Institut Armand Frappier
Date de dépôt: 20 juill. 2021 04:05
Dernière modification: 15 févr. 2022 17:55
URI: https://espace.inrs.ca/id/eprint/11641

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