Morphofunctional Changes of Ovarioles of the Blood-Sucking Mosquito (Diptera, Culicidae) during Oogenesis. 2. Abortive Oogenesis

The types of follicle's degeneration of 15 blood-sucking mosquito species were studied. Pregonotrophic degeneration takes place in 1-5 ovarioles immediately after imago hatching before feeding. Agonotrophic degeneration takes place in different number of ovarioles during long periods of sugar feeding. Gonotrophic degeneration takes place in some ovarioles at the same time with normal maturation of eggs in most of ovarioles after blood sucking. In ovarioles the relics are formed as a result of follicles' degeneration only and are named pregonotrophic, agonotrophic, gonotrophic relics, respectively. The possible causes of oosorption at different variants of follicles' degeneration are discussed.