Parity and gonotrophic discordance of females of Aedes aegypti and Aedes albopictus (Diptera: Culicidae) in the city of São Paulo, SP, Brazil

Journal of vector ecology: journal of the Society for Vector Ecology

article

Pâmela dos Santos Andrade¹  Paulo Roberto Urbinatti¹  Ronan da Rocha Coelho¹  Rosa Maria Marques de Sá Almeida¹  Sabrina Santana Ribeiro¹  Tamara Nunes de Lima-Camara¹ 

[1] Laboratory of Entomology in Public Health, School of Public Health, University of São Paulo;Epidemiology Department, School of Public Health, University of São Paulo

关键词: Mosquito vectors;    arbovirus;    transmission;    parity;    ovaries;    gonotrophic discordance.;   

DOI  :  10.1111/jvec.12354

来源: Society for Vector Ecology

【 摘 要 】

The objective of this study was to assess the parity, presence of blood in the stomach, and the gonotrophic discordance of females of Aedes aegypti and Aedes albopictus captured in two areas of the city of São Paulo. The captures were undertaken monthly, by aspiration, in the period from January, 2015 to August, 2017. All the females of the two species had their midguts and ovaries dissected to determine the presence of blood and the parity/stage of maturation. With regard to parity, 27% and 34% of the females of Ae. aegypti and Ae. albopictus, respectively, were parous or were in advanced stages of the development of their ovaries (33% and 27%, respectively). The larger part of the females of Ae. aegypti and Ae. albopictus contained blood in their stomachs (77% and 60%, respectively), beyond which 36% and 27% of the females of Ae. aegypti and Ae. albopictus, respectively, were in gonotrophic discordance. Our results indicate favorable conditions in the study areas because of the presence of parous females. Moreover, this frequent and multiple contact of Ae. aegypti and Ae. albopictus females with vertebrate hosts, such as humans, increases the possibility of transmitting the viruses they may be carrying.

【 授权许可】

Unknown