About L. variegatusL. variegatus and S. purpuratus shared a common ancestor about 50 Million years ago and are ideal models for comparative genomics studies. L. variegatus is also a broadcast spawner with external fertilization, exhibits rapid development, and can be cultivated in tanks.
Photo credit to Raymond L. Allen, Duke University, 2021.
Egg Size: 110 um Gastrulation: more than 1 day 8-arm pluteus larva: 12-14 days, 974 um Detailed development is described in: An Atlas of the Development of the Sea Urchin Lytechinus variegatus Reference: PubMed:32433766