Spatial analysis of the wing shape of Aedes aegypti mosquito in an endemic dengue area of Sao Paulo, Brazil

Author(s)

Prado, Isaque ^[1] ; Lima-Camara, Tamara Nunes ^[1] ; Chiaravalloti-Neto, Francisco ^[1] ; Pereira Parra, Maisa Carla ^[2] ; Dibo, Margareth Regina ^[3] ; Nogueira, Mauricio Lacerda ^[2] ; Lorenz, Camila ^[1]

Affiliation

^[1] Univ Sao Paulo, Fac Saude Publ, Dept Epidemiol, Av Dr Arnaldo, Cerqueira Cesar 01246-904, BR-715 Sao Paulo, SP - Brazil

^[2] Fac Med Sao Jose do Rio Preto, Lab Pesquisa Virol, Av Brig Faria Lima, Vila Sao Pedro 15090-000, BR-5416 Sao Jose Do Rio Preto, SP - Brazil

^[3] Superintendencia Controle Endemias Estado Sao Paul, Lab Entomol, Sao Paulo, SP - Brazil

• Document type: Journal article
• Source: INTERNATIONAL JOURNAL OF TROPICAL INSECT SCIENCE; OCT 2021.
• Web of Science Citations: 0

Abstract

The main objective of this study was to evaluate the structure and population dynamics of Aedes aegypti in the Vila Toninho neighborhood (Sao Jose do Rio Preto, Sao Paulo, Brazil) and verify the relationship between this vector and dengue cases, average temperature, and average precipitation. The shape and size of wings of 187 Ae. aegypti females, which were collected in 2017, were analyzed using geometric morphometry according to the season and collection areas (delimited by the occurrence of severe dengue cases). The wing shape was different between seasons, especially between winter and spring (p < 0.0001), and between collection areas in summer (p < 0.0001). Further, the wing size was different between seasons when analyzed together (p = 0.006), between winter and summer (p < 0.05), and between winter and autumn (p < 0.01). The number of mosquitoes collected was correlated with the average temperature (p = 0.021) and average precipitation (p = 0.001). The study results show evidence regarding microevolution of Ae. aegypti in Vila Toninho, which may have been influenced by environmental factors in different seasons. The population structure of these mosquitoes may indicate differences in other important epidemiological aspects, such as the dispersion of this vector, which should be investigated in future studies. (AU)

• FAPESP's process: 13/21719-3 - Epidemiological study of dengue (serotypes1-4) in a cohort of São José do Rio Preto, São Paulo, Brazil, during 2014-2018
• Grantee: Maurício Lacerda Nogueira
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 18/11490-2 - Spatial analysis of microevolution in Aedes aegypti in an endemic dengue municipality of state of São Paulo
• Grantee: Isaque Mendes de Souza Prado
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 17/10297-1 - Identification of risk areas for arboviruses using traps for adults of Aedes aegypti and Aedes albopictus and remote sensing images
• Grantee: Camila Lorenz
• Support Opportunities: Scholarships in Brazil - Post-Doctoral