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Table 3 Feature of the ovarian area of the gonad of gilthead seabream at the end of the second reproductive cycle/beginning of the third reproductive cycle.

From: Testicular involution prior to sex change in gilthead seabream is characterized by a decrease in DMRT1 gene expression and by massive leukocyte infiltration

Months Types of cells present in the ovary Cell diameter
Nuclear diameter
Cytoplasm Nucleus Follicle related structures
October No further development
  Vitellogenic oocytes at secondary yolk vesicle stage
192.8 ± 9.5 89.0 ± 4.5 Acidophilic globules
distributed at the periphery
Lipid dropped close
to the nucleus
  Granulosa Zone radiate Theca cell layer
November Vitellogenic oocytes at tertiary yolk vesicle stage
310.6 ± 24.9 114 ± 3.5 Numerous eosinophilic globules   Granulosa Zone radiate Theca cell layer
  Atretic follicles
   Irregular in shape
Numerous acidophilic and some basophilic granules
Highly condensed and basophilic Flattened cell monolayer
  1. *In November also appeared the germ cell types present in the ovary in October-July. These specimens are females.
  2. **In November, the most developed vitellogenic oocytes undergoes an atretic process. These specimens are males.