Ovulation and egg segregation in the tunic of a colonial ascidian, Diplosoma listerianum (Tunicata, Ascidiacea)

@article{Martinucci2004OvulationAE,
  title={Ovulation and egg segregation in the tunic of a colonial ascidian, Diplosoma listerianum (Tunicata, Ascidiacea)},
  author={Gian Bruno Martinucci and Paolo Burighel and Giovanna Zaniolo and Riccardo Brunetti},
  journal={Zoomorphology},
  year={2004},
  volume={108},
  pages={219-227}
}
The process of egg segregation in the tunic of the ovoviviparous ascidian Diplosoma listerianum was studied by light and electron microscopy. One egg at a time was seen to mature in each zooid. The eggs had large yolk and grew on the ovary wall enveloped in four layers: (1) outer follicle cells (OFC), long and rich in RER (rough endoplasmic reticulum) and… CONTINUE READING