Effect of trapping method on species identification of phlebotomine sandflies by MALDI‐TOF MS protein profiling |
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| Authors: | P Halada K Hlavackova J Risueño E Berriatua P Volf V Dvorak |
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| Affiliation: | 1. Institute of Microbiology of the Czech Academy of Sciences, Prague, Czech Republic;2. Department of Parasitology, Faculty of Science, Charles University, Prague, Czech Republic;3. Department of Animal Health, Faculty of Veterinary Science, Regional Campus of International Excellence ‘Campus Mare Nostrum’, University of Murcia, Murcia, Spain |
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| Abstract: | Sandflies (Diptera: Psychodidae) (Newstead, 1911) are blood‐feeding insects that transmit human pathogens including Leishmania (Trypanosomatida: Trypanosomatidae) parasites, causative agents of the leishmaniases. To elucidate Leishmania transmission cycles, conclusive identification of vector species is essential. Molecular approaches including matrix‐assisted laser desorption ionization time‐of‐flight mass spectrometry (MALDI‐TOF MS) protein profiling have recently emerged to complement morphological identification. The aim of this study was to evaluate the effect of the trap type used to collect sandflies, specifically Centers for Disease Control (CDC) light or sticky traps, the two most commonly used in sandfly surveys, on subsequent MALDI‐TOF MS protein profiling. Specimens of five species (Phlebotomus ariasi, Phlebotomus papatasi, Phlebotomus perniciosus, Phlebotomus sergenti, Sergentomyia minuta) collected in periurban and agricultural habitats in southeast Spain were subjected to protein profiling. Acquired protein spectra were queried against an in‐house reference database and their quality assessed to evaluate the trap type effect. The results indicate that trap choice can substantially affect the quality of protein spectra in collected sandflies. Whereas specimens retrieved from light traps produced intense and reproducible spectra that allowed reliable species determination, profiles of specimens from sticky traps were compromised and often did not enable correct identification. Sticky traps should therefore not be used in surveys that deploy MALDI‐TOF MS protein profiling for species identification. |
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| Keywords: | Phlebotomus light traps MALDI‐TOF MS protein profiling species identification sticky traps trapping methods |
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