Table 2 Summary of male cells stages defined for Serranus atricauda
Male cells stage | Description | Diameter (ÎĽm) |
|---|---|---|
Spermatogonia (Sg) | They appear either single or in small groups and have round shape with a conspicuous cytoplasm and a prominent central nucleus | 6.53–12.04 (8.41 ± 1.14) |
Primary spermatocysts (Sc1) | Always appear enclosed in cysts | 3.67–5.77 (4.47 ± 0.41) |
Secondary spermatocysts (Sc2) | Very similar to Sc1 but smaller | 2.45–4.19 (3.16 ± 0.34) |
Spermatids (St) | Even smaller than Sc2 but still found enclosed in cysts | 1.54–2.69 (2.04 ± 0.22) |
Spermatozoids (Sz) | They present cilia and are free in the lumen | 1.47–2.31 (1.87 ± 0.17) |