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Table 1
Early development of Cittarium pica. Time of appearance and size at various developmental stages.
| Development phase | Size (μm) | Time |
|---|---|---|
| Unfertilized oocyte | 180 ± 5 | 0 |
| First polar body | 185 ± 4 | 10 min |
| Second polar body | 185 ± 4 | 15 min |
| First cleavage | 200 ± 6 | 20 min |
| Second cleavage | 210 ± 5 | 40 min |
| Third cleavage | 212 ± 3 | 1.4 h |
| Morula | 215 ± 7 | 3.6 h |
| Blastula | 220 ± 8 | 4.4 h |
| Gastrula | 223 ± 4 | 5.4 h |
| Intracapsular trocophore | 226 ± 6 | 6.2 h |
| Hatched trocophore | 230 ± 9 | 9.7 h |
| Pre-torsional veliger | 241 ± 19 | 16 h |
| Post-torsional veliger | 260 ± 14 | 24 h |
| Crawling veliger | 271 ± 3 | 72 h |
| Spat | 1200 ± 200 | 48 days |
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