part_of developmental process process of oogenesis developmental changes after blood feeding IDOMAL:0002259 IDOMAL:0002259 The process described concernes Aedes aegypti. In Anopheles, the columnar epithelium of the ampullae is thrown into folds during the first ovarian cycle. During this and each succeeding ovarian cycle the size of the ampullae increases due to accumulation of secretion within the columnar cells. Within 24h of a first blood meal, the epithilial cells of the calyx become flattened and extended and start to develop microvilli, the calyx lumen becomes greatly enlarged, and the calyx assumes the shape of a distened sac. The muscle cells of the calyx undergo rather little development. During this period changes start in the lateral oviducts also, reaching completion by 72h post-blood meal. A distinct lumen forms within each lateral oviduct, the epithelium becomes folded, providing for distension of the lateral oviduct at ovulation, and the luminal surface of the epithelial cells becomes microvillate. The muscles cells grow substantially in volume, and their myofibrils and mitochondria increase in number and degree of organization. idomal_namespace