Effects of the Diet on the Microbiota of the Red Palm Weevil (Coleoptera: Dryophthoridae)
Prosdocimi, Erica Maria
De Biase, Alessio
Lozzia, Giuseppe Carlo
KAUST DepartmentBiological and Environmental Sciences and Engineering (BESE) Division
Extreme Systems Microbiology Lab
Permanent link to this recordhttp://hdl.handle.net/10754/344290
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AbstractRhynchophorus ferrugineus, also known as the red palm weevil, is regarded as the major pest of palm trees. Although studies of the microbiota associated with this species have been performed in recent years, little attention has been dedicated to the influence of the diet in shaping the host bacterial community. Here, we investigated the influence of food sources (i.e. palm tissues vs apple based substrate) on the microbial diversity associated with RPW, which was compared with the microbiota associated with wild individuals of the sister species Rhynchophorus vulneratus. The bacterial characterization was performed using a culture independent approach, i.e. the 16S rRNA pyrotag, and a culture dependent approach for a subset of the samples, in order to obtain bacterial isolates from RPW tissues. The bacterial community appeared significantly influenced by diet. Proteobacteria resulted to be the most abundant clade and was present in all the specimens of the three examined weevil groups. Within Proteobacteria, Enterobacteriaceae were identified in all the organs analysed, including hemolymph and reproductive organs. The apple-fed RPWs and the wild R. vulneratus showed a second dominant taxon within Firmicutes that was scarcely present in the microbiota associated with palm-fed RPWs. A comparative analysis on the bacteria associated with the palm tissues highlighted that 12 bacterial genera out of the 13 identified in the plant tissues were also present in weevils, thus indicating that palm tissues may present a source for bacterial acquisition.
CitationEffects of the Diet on the Microbiota of the Red Palm Weevil (Coleoptera: Dryophthoridae) 2015, 10 (1):e0117439 PLOS ONE
SponsorsThis work was supported by the project BIODESERT GA-245746 “Biotechnology from Desert Microbial Extremophiles for Supporting Agriculture Research Potential in Tunisia and Southern Europe” (European Union), the Prin 2009 (grant 009L27YC8_003) from the Italian Ministry of Education, University and Research (MIUR), Linea B Piano di sviluppo Unimi 2014 (grant 15-6-3) and “Accordo di Programma, affermazione in Edolo del Centro di Eccellenza Università della Montagna” MIUR-Università degli Studi di Milano, prot. n. 1293-05/08/2011. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
PublisherPublic Library of Science (PLoS)
PubMed Central IDPMC4311986
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