Abstract
Glossina austeni oogenesis throughout its nine-day pregnancy cycle is described with the focus on previtellogenic stages. The ultrastructural details of the oocyte-nurse cell relationship and cyst formation is presented. The oocyte develops in a syncytial association with 15 nurse cells with the entire unit surrounded by a follicular epithelium. The nurse cells have large elaborate nucleoli. Evidence of nuclear emissions and the presence of an unusual cytoplasmic membrane association were found. A variety of nuclear inclusions are seen in the oocyte. Glycogen, lipid, ribosomes and membrane organelles accumulate in the oocyte during previtellogenesis.
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