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Oviposition activity of Haemagogus leucocelaenus (Diptera: Culicidae) during the rainy and dry seasons, in areas with yellow fever virus circulation in the Atlantic Forest, Rio de Janeiro, Brazil

The present study aims to analyze the effectiveness of ovitraps in the capture of Hg leucocelaenus eggs and evaluate the influence of the dry and rainy seasons on their abundance and hatching rates. The eggs were collected in the Atlantic Forest of State of Rio de Janeiro, Brazil, an area in which t...

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Autores principales: Alencar, Jeronimo, de Mello, Cecilia Ferreira, Leite, Paulo José, Bastos, Amanda Queiroz, Freitas Silva, Shayenne Olsson, Serdeiro, Michele, dos Santos Silva, Júlia, Müller, Gerson Azulim
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8668088/
https://www.ncbi.nlm.nih.gov/pubmed/34898653
http://dx.doi.org/10.1371/journal.pone.0261283
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author Alencar, Jeronimo
de Mello, Cecilia Ferreira
Leite, Paulo José
Bastos, Amanda Queiroz
Freitas Silva, Shayenne Olsson
Serdeiro, Michele
dos Santos Silva, Júlia
Müller, Gerson Azulim
author_facet Alencar, Jeronimo
de Mello, Cecilia Ferreira
Leite, Paulo José
Bastos, Amanda Queiroz
Freitas Silva, Shayenne Olsson
Serdeiro, Michele
dos Santos Silva, Júlia
Müller, Gerson Azulim
author_sort Alencar, Jeronimo
collection PubMed
description The present study aims to analyze the effectiveness of ovitraps in the capture of Hg leucocelaenus eggs and evaluate the influence of the dry and rainy seasons on their abundance and hatching rates. The eggs were collected in the Atlantic Forest of State of Rio de Janeiro, Brazil, an area in which the yellow fever virus is known to circulate. We distributed 15 ovitraps in three sampling points, with five ovitraps per point. We distributed 15 ovitraps in three sampling points on trees within a forested area, which were sequentially numbered, monitored, and replaced every two weeks from October 2016 to April 2018. There was a high dominance of Hg. leucocelaenus eggs (98.4%) and a variation in egg hatching rates between the wet and dry seasons. These rates were 1.5 times higher in the rainy season than in the dry season. The rainy season also showed a greater abundance of eggs and higher values of ovitrap positivity and egg density indexes in the installed ovitraps. The abundances of Hg. leucocelaenus eggs were positively correlated with mean monthly temperature and air humidity but not significantly correlated with accumulated precipitation. These results, as well as their implications for the possible use of ovitraps to monitor vector mosquitoes of yellow fever in the study region, are discussed.
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spelling pubmed-86680882021-12-14 Oviposition activity of Haemagogus leucocelaenus (Diptera: Culicidae) during the rainy and dry seasons, in areas with yellow fever virus circulation in the Atlantic Forest, Rio de Janeiro, Brazil Alencar, Jeronimo de Mello, Cecilia Ferreira Leite, Paulo José Bastos, Amanda Queiroz Freitas Silva, Shayenne Olsson Serdeiro, Michele dos Santos Silva, Júlia Müller, Gerson Azulim PLoS One Research Article The present study aims to analyze the effectiveness of ovitraps in the capture of Hg leucocelaenus eggs and evaluate the influence of the dry and rainy seasons on their abundance and hatching rates. The eggs were collected in the Atlantic Forest of State of Rio de Janeiro, Brazil, an area in which the yellow fever virus is known to circulate. We distributed 15 ovitraps in three sampling points, with five ovitraps per point. We distributed 15 ovitraps in three sampling points on trees within a forested area, which were sequentially numbered, monitored, and replaced every two weeks from October 2016 to April 2018. There was a high dominance of Hg. leucocelaenus eggs (98.4%) and a variation in egg hatching rates between the wet and dry seasons. These rates were 1.5 times higher in the rainy season than in the dry season. The rainy season also showed a greater abundance of eggs and higher values of ovitrap positivity and egg density indexes in the installed ovitraps. The abundances of Hg. leucocelaenus eggs were positively correlated with mean monthly temperature and air humidity but not significantly correlated with accumulated precipitation. These results, as well as their implications for the possible use of ovitraps to monitor vector mosquitoes of yellow fever in the study region, are discussed. Public Library of Science 2021-12-13 /pmc/articles/PMC8668088/ /pubmed/34898653 http://dx.doi.org/10.1371/journal.pone.0261283 Text en © 2021 Alencar et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Alencar, Jeronimo
de Mello, Cecilia Ferreira
Leite, Paulo José
Bastos, Amanda Queiroz
Freitas Silva, Shayenne Olsson
Serdeiro, Michele
dos Santos Silva, Júlia
Müller, Gerson Azulim
Oviposition activity of Haemagogus leucocelaenus (Diptera: Culicidae) during the rainy and dry seasons, in areas with yellow fever virus circulation in the Atlantic Forest, Rio de Janeiro, Brazil
title Oviposition activity of Haemagogus leucocelaenus (Diptera: Culicidae) during the rainy and dry seasons, in areas with yellow fever virus circulation in the Atlantic Forest, Rio de Janeiro, Brazil
title_full Oviposition activity of Haemagogus leucocelaenus (Diptera: Culicidae) during the rainy and dry seasons, in areas with yellow fever virus circulation in the Atlantic Forest, Rio de Janeiro, Brazil
title_fullStr Oviposition activity of Haemagogus leucocelaenus (Diptera: Culicidae) during the rainy and dry seasons, in areas with yellow fever virus circulation in the Atlantic Forest, Rio de Janeiro, Brazil
title_full_unstemmed Oviposition activity of Haemagogus leucocelaenus (Diptera: Culicidae) during the rainy and dry seasons, in areas with yellow fever virus circulation in the Atlantic Forest, Rio de Janeiro, Brazil
title_short Oviposition activity of Haemagogus leucocelaenus (Diptera: Culicidae) during the rainy and dry seasons, in areas with yellow fever virus circulation in the Atlantic Forest, Rio de Janeiro, Brazil
title_sort oviposition activity of haemagogus leucocelaenus (diptera: culicidae) during the rainy and dry seasons, in areas with yellow fever virus circulation in the atlantic forest, rio de janeiro, brazil
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8668088/
https://www.ncbi.nlm.nih.gov/pubmed/34898653
http://dx.doi.org/10.1371/journal.pone.0261283
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