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Table I
Main characteristics of the male reproductive systems of F. schrottkyi and their development during sexual maturation.
| AGE | CHARACTERISTICS | |
|---|---|---|
|
|
||
| Testes | Seminal vesicle | |
|
|
||
| Just | Spermiogenesis completed | Seminal vesicle lumen reduced, epithelium |
| emerged | 50 μm high, basal nuclei, few membranous | |
| inclusions (< 1 μm diameter), lipid droplets | ||
|
|
||
| 3–8 days | No changes | Seminal vesicle lumen increased, large |
| epithelial apical projections containing | ||
| nuclei, holocrine secretion, larger | ||
| membranous inclusions (irregular shape), | ||
| lipid droplets | ||
|
|
||
| 9 days | Formation of the glycoprotein | Sperm arrive in seminal vesicles, holocrine |
| cap, bundle disorganization, | secretion not observed, lipid droplets | |
| sperm individualized inside | ||
| testes | ||
|
|
||
| 14 days | Testes degenerated | Seminal vesicle full of spermatozoa, |
| epithelium 25 μm high, apical nuclei, large | ||
| membranous inclusions (2 μm diameter), | ||
| fused membranous inclusions, lipid | ||
| droplets | ||