Article
Vertical Distribution of Oviposition and Temporal Segregation of Arbovirus Vector Mosquitoes (Diptera: Culicidae) in a Fragment of the Atlantic Forest, State of Rio de Janeiro, Brazil
Registro en:
DIAS, Rayane et al. Vertical Distribution of Oviposition and Temporal Segregation of Arbovirus Vector Mosquitoes (Diptera: Culicidae) in a Fragment of the Atlantic Forest, State of Rio de Janeiro, Brazil. Tropical Medicine and Infectious Disease, v.8, 256, p. 1 - 10, Apr. 2023.
2414-6366
10.3390/ tropicalmed8050256
Autor
Dias, Rayane
Mello, Cecilia Ferreira de
Santos, Gabriel Silva
Carbajal-de-la-Fuente, Ana Laura
Alencar, Jeronimo
Resumen
Culicid species, which include potential vectors of yellow fever, are diverse and abundant,
with species commonly co-occurring in certain sites. Studying these species can provide important
insights into their vector potential and, consequently, epizootic cycles of arboviruses carried about by
these vectors. Here, we evaluated the vertical distribution and temporal segregation of mosquito
oviposition with emphasis on arbovirus vectors in a fragment of the Atlantic Forest in Casimiro de
Abreu, Rio de Janeiro, Brazil. Two sampling points were selected: Fazenda Três Montes and the
Reserva Natural de Propriedade Privada Morro Grande. Collections were carried out at two sites
using 10 ovitraps installed on the vegetation cover at different heights (0, 2, 4, 6, and 8 m above
ground level) and monitored monthly from July 2018 to December 2020. The hypotheses of temporal
and vertical stratification were tested through a PERMANOVA, and the relationship of each species
with the vertical distribution was evaluated individually through a correlation analysis. We collected
a total of 3075 eggs, including four species of medical importance: Haemagogus leucocelaenus (n = 1513),
Haemagogus janthinomys (n = 16), Aedes albopictus (n = 1097), and Aedes terrens (n = 449). We found that
Hg. leucocelaenus had a positive relationship with height, exhibiting behavior that appears to benefit
from higher heights. The abundance of Ae. terrens seemed to follow Hg. leucocelaenus, although
we did not find a relationship with height for the former species. On the other hand, Ae. albopictus
exhibited a negative relationship with height, becoming absent or outnumbered at higher strata.
Our study site has already presented evidence of recent transmission of the wild yellow fever virus,
supporting the need to carefully monitor the emergence of febrile diseases among residents in the
surrounding areas and the local population.