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Title

Antiparasitic Effects of Potentially Toxic Beetles (Tenebrionidae and Meloidae) from Steppe Zones

AuthorsDíaz-Navarro, Marta; Bolívar, Paula; Andrés, Mª Fé CSIC ORCID; Gómez-Muñoz, María Teresa; Martínez-Díaz, Rafael A.; Valcárcel, Félix; García-París, Mario CSIC ORCID ; Bautista, Luis M. CSIC ORCID ; González-Coloma, Azucena CSIC ORCID
KeywordsTenebrionidae
Meloidae
Nematicide
Antiprotozoal
GCMS
Cantharidin
Ethyl oleate
Otididae
Issue Date14-Jul-2021
PublisherMultidisciplinary Digital Publishing Institute
CitationToxins 13(7): 489 (2021)
AbstractArthropods and specifically beetles can synthesize and/or sequester metabolites from dietary sources. In beetle families such as Tenebrionidae and Meloidae, a few studies have reported species with toxic defensive substances and antiparasitic properties that are consumed by birds. Here we have studied the antiparasitic activity of extracts from beetle species present in the habitat of the Great Bustard (Otis tarda) against four pathogen models (Aspergillus niger, Meloidogyne javanica, Hyalomma lusitanicum, and Trichomonas gallinae). The insect species extracted were Tentyria peiroleri, Scaurus uncinus, Blaps lethifera (Tenebrionidae), and Mylabris quadripunctata (Meloidae). M. quadripunctata exhibited potent activity against M. javanica and T. gallinae, while T. peiroleri exhibited moderate antiprotozoal activity. The chemical composition of the insect extracts was studied by gas chromatography coupled with mass spectrometry (GC-MS) analysis. The most abundant compounds in the four beetle extracts were hydrocarbons and fatty acids such as palmitic acid, myristic acid and methyl linoleate, which are characteristic of insect cuticles. The presence of cantharidin (CTD) in the M. quadripunctata meloid and ethyl oleate (EO) in T. peiroleri accounted for the bioactivity of their extracts.
Publisher version (URL)https://www.mdpi.com/2072-6651/13/7/489
URIhttp://hdl.handle.net/10261/248759
DOI10.3390/toxins13070489
ISSN1556-9543
E-ISSN1556-9551
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