ArticleParasites & vectors2025
Treatment of chickens with fluralaner induced mortality in pyrethroid-resistant Triatoma infestans (Hemiptera, Triatominae).
Article in Parasites & vectors, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Effect of fluralaner administration to domestic dogs on the bloodmeal profile of Triatoma infestans in a cluster-randomized trial in the Argentine Chaco.Parasites & vectors · 2026Article
- Long-term efficacy of fluralaner (ExzoltParasites & vectors · 2026Article
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9 authors.
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Abstract
backgroundResidual spraying with pyrethroid insecticides is still the main strategy used to prevent vector-borne transmission of Trypanosoma cruzi, the etiological agent of Chagas disease. The emergence of resistance to these insecticides in triatomine populations associated with vector control failure highlights the need to evaluate alternative tools, such as xenointoxication. Chickens serve as important blood meal sources and are positively associated with triatomine abundance. Therefore, several endectocides have been tested in chickens, with fluralaner exhibiting the best results. However, the effect of treating chickens with fluralaner has not been evaluated in pyrethroid-resistant triatomines. Here, we aimed to assess the efficacy and duration of the lethal effect of fluralaner on pyrethroid-resistant and susceptible Triatoma infestans using chickens as treated hosts under semi-experimental conditions with a treated-control design.
methodsThree chickens received two oral doses of Bravecto
resultsFeeding success rates were high, ranging from 95.5% to 100% throughout the trial, and were not affected by treatment or exposure time. The greatest lethal effects of fluralaner on triatomines exposed to treated chickens were observed up to 14 DPT, with cumulative mortality ranging from 76.9% to 87.0%. At 28 DPT, triatomine mortality decreased significantly to 12.8%, similar to the control group means (< 17.9%) and pre-treatment levels (6.8%). No difference in the lethality of fluralaner was detected between susceptible and pyrethroid-resistant triatomines via logistic regression analysis.
conclusionsOn the basis of these and previous results, chickens are eligible for a field study that addresses the efficacy of simultaneous xenointoxication of various hosts using fluralaner. This approach provides a promising alternative for addressing the challenge of resistance to pyrethroid insecticides in triatomines.
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