Figure 8

Histological sections of female gonads: (A) Immature: A1, A2 = Oo: Oogonia (< 15 μm), CA: cortical alveolar oocytes (35–70 μm), PG: Primary growth oocyte (20–35 μm); (B) Development: B1, B2, B3 = CA, PG, Vtg1 = primary vitellogenic (75–100 μm), Vtg2 = secondary vitellogenic (100–220 μm); (C) Spawning: C1, C2, C3 = Vtg1, PG, Vtg3 = tertiary vitellogenic (220–350 μm); and (D) Regression: Oo, PG, A = Atresia [Scale bar = 50 micron (μm)]. V yolk vacuoles, yg yolk granules.