Table 2. Frequency of individuals per category of histological appearance of the gonads in adult Patagonian pejerrey (Odontesthes hatcheri) subjected to heat (26°C) and Busulfan treatments (B0: Busulfan 0 mg/kg, controls; B30: 30 mg/kg, only females; B40: 40 mg/kg, only males) for germ cell depletion.
| Treatments | Observation (weeks) | Sex | Histological category | |||
| I | II | III | IV | |||
| B0 | 4 | ♂ | 10 | - | - | - |
| ♀ | 10 | - | - | - | ||
| 8 | ♂ | 5 | 5 | - | - | |
| ♀ | 6 | 4 | - | - | ||
| 24 (Recovery) | ♂ | 10 | - | - | - | |
| ♀ | 10 | - | - | - | ||
| B30 | 4 | ♀ | - | 5 | 5 | - |
| 8 | ♀ | - | - | 2 | 8 | |
| 24 (Recovery) | ♀ | 5 | 1 | - | 4 | |
| B40 | 4 | ♂ | - | - | 7 | 3 |
| 8 | ♂ | - | - | 1 | 9 | |
| 24 (Recovery) | ♂ | 5 | - | 1 | 4 | |
Histological categories are described in Table 1.