In Vitro Evaluation of Antimicrobial Activity of Alimentary Canal Extracts from the Red Palm Weevil, Rhynchophorus ferrugineus Olivier Larvae

The invasive red palm weevil, Rhynchophorus ferrugineus Olivier (Coleoptera: Curculionidae), is considered one of the world’s most devastating insect pests to palm trees. It was observed that larvae of this pest are able to inhibit microbial growth on the rearing media when they start feeding and th...

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Bibliographic Details
Published in:BioMed research international 2017-01, Vol.2017 (2017), p.1-6
Main Authors: Sewify, Gamal H., Alhadrami, Hani A., Hamada, Hanan M.
Format: Article
Language:English
Subjects:
Amino acids
Animals
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - pharmacology
Antibiotics
Antimicrobial agents
Bacteria
Bacteria - growth & development
Complex Mixtures - chemistry
Complex Mixtures - pharmacology
Defense
E coli
Fungi
Gastrointestinal Tract - chemistry
Health aspects
Immune system
Insects
Laboratories
Larva - chemistry
Larval development
Lectins
Medical research
NMR
Nuclear magnetic resonance
Pathogens
Peptides
Studies
Sugarcane
Tumors
Weevils - chemistry
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Summary:The invasive red palm weevil, Rhynchophorus ferrugineus Olivier (Coleoptera: Curculionidae), is considered one of the world’s most devastating insect pests to palm trees. It was observed that larvae of this pest are able to inhibit microbial growth on the rearing media when they start feeding and this observation has led us to study the effect of red palm weevils on various microbial species. The antimicrobial effect of extracts from different parts of the alimentary canal on Gram positive bacteria (Enterococcus faecalis and Staphylococcus aureus), Gram negative bacteria (Escherichia coli and Klebsiella spp.), Candida albicans, and Penicillium sp. was tested using the agar well diffusion method. All extracts inhibited the tested microbial species. Foregut extracts had the greatest zones of growth inhibition. Enterococcus faecalis, Staphylococcus aureus, and Penicillium sp. were significantly sensitive to the extracts and had the largest growth inhibition zones. It is concluded that the gut extracts contain potent antimicrobial activity and may provide a new source of antimicrobial peptides.
ISSN:2314-6133
2314-6141
DOI:10.1155/2017/8564601