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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of landscape composition and configuration on the richness and abundance of potential sylvatic yellow fever vectors in a remnant of Atlantic Forest in the city of Sao Paulo, Brazil

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Author(s):
Wilk-da-Silva, Ramon [1] ; Mucci, Luis Filipe [2] ; Ceretti-Junior, Walter [3] ; Ribeiro de Castro Duarte, Ana Maria [2] ; Marrelli, Mauro Toledo [3, 1] ; Medeiros-Sousa, Antonio Ralph [3]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Trop Med Inst, Av Dr Eneas Carvalho de Aguiar 470, Sao Paulo, SP - Brazil
[2] State Dept Hlth, Superintendency Control Endem Dis SUCEN, Sao Paulo - Brazil
[3] Univ Sao Paulo, Sch Publ Hlth, Dept Epidemiol, Av Dr Arnaldo 715, Sao Paulo, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Acta Tropica; v. 204, APR 2020.
Web of Science Citations: 0
Abstract

The landscape's structure can play a relevant role in epidemic patterns of arboviruses, influencing factors such as abundance, movement, and dispersal ability in arthropod vectors and vertebrate hosts, besides promoting alterations in the rate of potential infectious contacts between these organisms. In the Americas, yellow fever (YF) exhibits only the sylvatic cycle, in which the virus circulates in sylvatic areas among non-human primates, being transmitted by mosquitoes of the Haemagogus and Sabethes genera. In this study, we investigate some aspects of the landscape in relation to diversity and abundance of culicid species associated with YF transmission. Studies were performed in the Cantareira State Park, a remnant of the Atlantic Forest located in Greater Metropolitan Sao Paulo, Brazil, where the YF virus circulated recently with dozens of deaths in howler monkeys (Alouatta guariba), in addition to reported human cases. Mosquito collections were carried out monthly from February 2015 to April 2017. Mosquitoes were collected from three sites using battery-powered aspirator (12-volt battery), CDC, and Shannon traps for adults, and suction samplers and entomological spoons in breeding sites to collect immature forms. 703 mosquitoes belonging to 12 species of the Aedini and Sabethini tribes were collected. Aedes scapularis and Psorophora ferox exhibited higher abundance, while Haemagogus leucocelaenus, the main vector of YF in Sao Paulo state, showed lower abundance in all sampled areas. The site with longer edge between forest area and anthropic area presented more richness and abundance of YF vector species, while the site with larger forest cover area and shorter edges between forest and anthropic areas exhibited an inverse pattern. Statistically significant differences were observed between the composition of potential YF vector species among the investigated sites. Although Hg. leucocelaenus occurred in all sampled sites, the different patterns of distribution and abundance of other mosquitoes such as Aedes scapularis and Psorophora ferox suggest that these species may be involved in the transmission of sylvatic YF in the study area. (AU)

FAPESP's process: 17/23127-7 - Analysis of the influence of the landscape on the population structure of mosquitoes Haemagogus (Conopostegus) leucocelaenus (Diptera: Culicidae) in areas with historical of Yellow Fever epizootics in non-human primates in the State of São Paulo
Grantee:Ramon Wilk da Silva
Support Opportunities: Scholarships in Brazil - Doctorate