The fauna of sandflies (Diptera: Psychodidae) of the agglomeration of Lassance, North-East Minas Gerais, Brazil

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PLoS One. Oct 13, 2021; 16 (10): e0257043. doi: 10.1371 / journal.pone.0257043. Electronic collection 2021.


The present study aimed to verify the sandfly fauna in the municipality of Lassance, Minas Gerais, Brazil and to detect the presence of Leishmania DNA on the captured female and to determine the risk areas of the municipality. Sandflies were collected monthly from May 2018 to April 2019 using automatic light traps for 3 consecutive nights. Eight houses were selected as sampling points due to its previous reports of integumentary leishmaniasis and / or canine leishmaniasis. The sandfly fauna found in the present study is represented by several species of medical importance and the most abundant species found were Lutzomyia longipalpis (77.09%) and Nyssomyia intermedia (10.06%). Leishmania infantum DNA was detected in a pool of Lu. Longipalpis resulting in an infection rate of 2.81%. By the frequency of the two most abundant species on this study, we have developed a map of the areas at risk and it draws attention to sampling point 6 due to the disparate abundance of sandflies at this site (81, 81%). The statistical overview shows Lu. Longipalpis as the dominant species and, again, the analysis of non-metric multidimensional scale reveals a strong similarity in the diversity of the fauna in the study area. Our results suggest that the diversity of sandflies in the municipality of Lassance can promote the circulation of Leishmania infantum parasites endangering inhabitants and other species of mammals. Nevertheless, our study reinforces the need for specific studies focused on phlebotomy breeding sites and its ecology to expand knowledge on the behavior of this group of insects directly applicable to the epidemiology of leishmaniasis.

PMID:34644289 | DO I:10.1371 / journal.pone.0257043

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