Table 2.

Larval developmental events of S. sphaeroides. Three replicate fertilization experiments were conducted and for each developmental stage, 10 embryos from each replicate were used for the observation and measurement of larvae.

Time after insemination	Developmental stages	Length (μm)
16.15 h	Gastrula	178.71 ± 5.52
22.25 h	Prism	181.56 ± 3.99
34.00 h	2-arm pluteus	233.01 ± 10.51
48.00 h	4-arm pluteus	364.72 ± 6.57
10.00 d	6-arm pluteus	545.62 ± 10.72
16.00 d	8-arm pluteus	716.85 ± 9.99
28.00 d	Precompetent larva with ciliated ring and growing rudiment	929.02 ± 9.62
35.00 d	Competent larva with complete rudiment	740.36 ± 11.51
36.00 d	Juvenile (1 d after metamorphosis)	413.98 ± 6.11