ArticleScientific reports2023
First report of filarial nematodes in the genus Onchocerca infecting black flies (Diptera: Simuliidae) in Iran.
Article in Scientific reports, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 2 citations in OpenAlex.
- Xenopsylla buxtoni fleas as a dominant species harboring multiple infections of Wolbachia lineages in the ancient plague epicenters of Iran.PLoS neglected tropical diseases · 2026Article
- Multiplex PCR for the differentiation ofCurrent research in parasitology & vector-borne diseases · 2026Article
- A filarial parasite potentially associated with the health burden on domestic chickens in Japan.Scientific reports · 2024Article
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Authors and funding
5 authors at 3 institutions in 3 countries.
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No grant is acknowledged in the PubMed record.
Abstract
Black flies are blood-sucking insects of public health importance, and they are effective vectors of pathogens and parasites, such as filarial nematodes of the genus Onchocerca. Our previous surveys have shown that individuals of Simulium turgaicum are annoying pests of humans and livestock in the Aras River Basin of Iran. In the present study, adult black flies of S. turgaicum were trapped from different ecotopes of five villages in Khoda-Afarin County, Iran. By using a sensitive nested PCR assay and targeting the nuclear 18S rDNA-ITS1 marker, filarial infections were found in 38 (1.89%) of 2005 black flies. Homology exploration of 360 bp of the sequences indicated that the filarial worms are members of the family Onchocercidae, with maximum alignment scores of 93-95%. Phylogenetic analysis showed that two Iranian Onchocerca isolates were clustered in the O. fasciata-O. volvulus lineage and were well separated from other filarial nematodes. Both the entomological evidence (empty abdomen of the specimens) and climatologic data (adequate accumulated degree days for development) suggest that the filarial DNA was probably that of infective larvae of vertebrates. This is the first report of an infection by Onchocerca species in S. turgaicum and the first record of onchocercids in black flies in Iran; however, more research is required to demonstrate transmission of these filarial worms by black flies in nature.
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