AI Article Synopsis
- - Nyssorhynchus darlingi is the main malaria-carrying mosquito in the Brazilian Amazon, with other Anophelinae species also playing a role in malaria transmission within the region.
- - The study utilized barrier screen sampling to analyze blood-feeding behavior and host preferences of these mosquitoes in 34 rural communities over a two-year period, highlighting the dominance of Ny. darlingi, which made up nearly 98% of the collected samples.
- - Findings showed that Ny. darlingi is flexible in its choice of hosts, feeding on a variety of mammals, and confirmed that methods like using silica-dried females are effective for studying mosquito feeding patterns in remote areas.
Article Abstract
Nyssorhynchus darlingi (Root) is the dominant malaria vector in the Brazilian Amazon River basin, with additional Anophelinae Grassi species involved in local and regional transmission. Mosquito blood-feeding behavior is an essential component to define the mosquito-human contact rate and shape the transmission cycle of vector-borne diseases. However, there is little information on the host preferences and blood-feeding behavior of Anophelinae vectors in rural Amazonian landscapes. The barrier screen sampling (BSS) method was employed to sample females from 34 peridomestic habitats in 27 rural communities from 11 municipalities in the Brazilian Amazon states of Acre, Amazonas, Pará and Rondônia, from August 2015 to November 2017. Nyssorhynchus darlingi comprised 97.94% of the females collected resting on barrier screens, and DNA sequence comparison detected 9 vertebrate hosts species. The HBI index ranged from 0.03-1.00. Results revealed the plasticity of Ny. darlingi in blood-feeding on a wide range of mainly mammalian hosts. In addition, the identification of blood meal sources using silica-dried females is appropriate for studies of human malaria vectors in remote locations.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8223507 | PMC |
| http://dx.doi.org/10.1016/j.actatropica.2020.105751 | DOI Listing |
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