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16 March 2021 Sand Fly Fauna, Spatial Distribution of Lutzomyia longipalpis (Diptera: Psychodidae), and Climate Factors in Dourados, Brazil
Manoel Sebastião Da Costa Lima-Junior, Paulo Silva De Almeida, José Oliveira Da Silva, Rosana Alexandre Da Silva, Odival Faccenda, Dioelen Virgínia Borges Souza De Aquino Coelho, Gabriel Barbosa Costa, Agruslávia Rezende De Souza, Marcos Gino Fernandes, Herintha Coeto Neitzke-Abreu
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Abstract

Studies of the geographic distribution of sand flies and the factors associated with their occurrence are necessary to understand the risk of leishmaniasis transmission. The objective of this study was to characterize the sand fly fauna, particularly the spatial distribution of Lutzomyia longipalpis (Lutz & Neiva), and correlate these with climate factors in the Dourados municipality, Brazil. The collection of sand flies was carried out with CDC LightTraps over two periods: at six sites for three consecutive nights each month from August 2012 to July 2013; and at four other sites for two consecutive nights each month from April 2017 to February 2018. We collected 591 sand flies in the first period and 121 in the second period for a total of 712 sand flies; 697 of the total collected were Lu. longipalpis. The minimum and maximum sand fly infestation rate (sites with vector presence) was 11.1% and 83.33% in the first period, and 0% and 50.0% in the second period. No sand flies with Leishmania were identified via PCR. Lu. longipalpis presented an aggregate disposition with excellent adjustment. Rainfall and relative humidity were the abiotic factors that influenced the vector infestation level. The aggregate distribution for this species was predicted by the environmental factors that favor the proliferation of Lu. longipalpis. The results of this study should assist in devising measures to control sand flies in Dourados, Brazil.

© The Author(s) 2021. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
Manoel Sebastião Da Costa Lima-Junior, Paulo Silva De Almeida, José Oliveira Da Silva, Rosana Alexandre Da Silva, Odival Faccenda, Dioelen Virgínia Borges Souza De Aquino Coelho, Gabriel Barbosa Costa, Agruslávia Rezende De Souza, Marcos Gino Fernandes, and Herintha Coeto Neitzke-Abreu "Sand Fly Fauna, Spatial Distribution of Lutzomyia longipalpis (Diptera: Psychodidae), and Climate Factors in Dourados, Brazil," Journal of Medical Entomology 58(4), 1952-1957, (16 March 2021). https://doi.org/10.1093/jme/tjab022
Received: 10 September 2020; Accepted: 16 January 2021; Published: 16 March 2021
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KEYWORDS
Distribution model
Negative binomial distribution
sand fly vector
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