Abstract
Preliminary studies of Culex quinquefasciatus vitellogenic ovaries during the first gonotrophic cycle (Cardoso et al., 2010) showed, around 48 hours after the blood meal, the presence of electron-dense vesicles at the apical surface of the follicular epithelium, possibly participating in forming one of the chorion layers. Simultaneously, electrophoresis of ovarian extracts detected the ap…