and bowfin. Cystovaries characterize most teleosts, where the ovary lumen has continuity with the oviduct.[29] Secondary gymnovaries are found in salmonids and a
Oogonia development in teleosts fish varies according to the group, and the determination of oogenesis dynamics allows the understanding of maturation and fertili
zation processes. Changes in the nucleus, ooplasm, and the surrounding layers characterize the oocyte maturation process.[29]
Postovulatory follicles are structures formed after oocyte release; they do not have endocrine function, present a wide irregular lumen, and are rapidly reabsorbed
in a process involving the apoptosis of follicular cells.
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