Oogenesis progression in Pararge aegeria.

Pararge aegeria ovaries consist of 8 ovarioles [6]. The diagram illustrates the morphology of a single P. aegeria ovariole annotated with the approximate equivalent Drosophila melanogaster oogenesis stages (i.e. 1 to 14) [56] on the basis of relative size, morphological characteristics and position of the nucleus (abbreviations explained in figure). Cellular processes (e.g. meiosis I and II) and ovarian regions (e.g. oviducts) relevant to oogenesis are also annotated. Progression of oocytes beyond the vitellarium is scaled to fit. The nurse cells have fully degenerated and the oocytes in this region will enter the oviducts and be ready for fertilisation and laying, upon which embryogenesis commences.