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DISPERSION PATTERN OF MANSONIA IN THE SURROUNDINGS OF THE AMAZON JIRAU HYDROELECTRIC POWER PLANT
Affilliation
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Diptera. Rio de Janeiro, RJ, Brasil / Universidade Federal Rural do Rio de Janeiro. Instituto de Biologia. Programa de Pós-Graduação em Biologia Animal. Seropédica, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Diptera. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Diptera. Rio de Janeiro, RJ, Brasil.
Abstract
Mansonia spp. are voracious hematophagous mosquitoes whose mature stages usually breed in
freshwater bodies containing aquatic vegetation. The reduction in water flow leads to a proliferation in
aquatic plants, increasing their populations. Besides, some species are potential vectors of pathogens
such as arboviruses and microfilariae. We evaluated the degree of active dispersion of females of
Mansonia spp. in the surrounding area of the Jirau hydroelectric power plant in the Amazon, Rondônia,
Brazil, using mark-release-recapture techniques. The flight behavior of the recaptured specimens
was summarized with a set of average and maximum distances traveled. We show that the dispersal
movement of Mansonia spp. is predominantly performed by random, low, and short flights, with a
tendency to remain near the breeding sites in certain vegetation fragments. However, the maximum
distances traveled were 2000 m from the release point for Mansonia amazonensis during 2018 and
Mansonia humeralis during 2019.
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