Age (years)

n > 20

n > 10

Female

gonadal stage

Male

gonadal stage

Female body weight (kg)

Male body weight (kg)

1

2

3

4

5

6

0.27 ± 0.084

3.33 ± 0.38

4.63 ± 0.59

6.81 ± 1.53

10.22 ± 2.3

11.4 ± 3.2

0.27 ± 0.084

3.05 ± 0.66

4.21 ± 0.86

5.23 ± 1.5

7.352 ± 1.8

9.8 ± 2.1

Undifferentiated

Previtellogenic

Previtellogenic

Previtellogenic

Previtellogenic

Early vitellogenesis

Undifferentiated

Early

spermatogenesis

Spermatogenesis

Maturation

Maturation