Parity and ovarian development of Aedes aegypti and Ae. albopictus (Diptera: Culicidae) in metropolitan Rio de Janeiro.
Vector blood-feeding frequency, parity, and ovarian development are important factors that can influence pathogen transmission. Parity rates of the dengue vectors Aedes aegypti and Ae. albopictus were determined from females collected from August 2002 to July 2004 in metropolitan Rio de Janeiro. A high frequency of parous Ae. aegypti (92.9%, n = 550) and Ae. albopictus (99.1%, n = 320) females suggested high survivorship of both species. A total of 69% of wild-caught Ae. aegypti females had blood in the midgut compared to 19% of Ae. albopictus. For Ae. aegypti, red-colored midgut contents were associated with ovaries in early stages of development, and brown-colored midguts were associated with ovaries in late stages of maturation. Ovaries of Ae. aegypti females without blood in the midgut were most frequently in stages I and V of Christophers.
de Lima-Camara
Tamara Nunes
TN
Laboratório de Transmissores de Hematozoários, Departamento de Entomologia, Instituto Oswaldo Cruz -Fiocruz, Av. Brasil 4365, 21045-900, Rio De Janeiro, RJ, Brazil.
Honório
Nildimar Alves
NA
Lourenço-de-Oliveira
Ricardo
R
D000330:Aedes / Q000254:growth & development* / Q000502:physiology; D000818:Animals; D001938:Brazil; D009033:Culicidae / Q000254:growth & development* / Q000502:physiology; D005260:Female; D007303:Insect Vectors / Q000254:growth & development / Q000502:physiology; D010053:Ovary / Q000254:growth & development* / Q000502:physiology; D011156:Population Density