Development of Growout Techniques for Juvenile Sea Urchins

This SBIR Phase 1 project proposes to develop and refine the culture conditions to optimize the growth and survivorship of juvenile sea urchins ( Strongylocentrotus droebachiensis ), a commercial species not previously cultured. Sea urchin roe is a delicacy in Japan. That is the basis of a $500 millions fishery worldwide. To date, research and development of sea urchin aquaculture has had two foci: hatchery development, in which we at the Peacock hatchery have played a pivotal role, and roe enhancement of adults. These are two important stages of the life cycle of sea urchins. However, without bridging them through growout of juvenile sea urchins, sea urchin aquaculture will not become a reality. In Phase 1, we will determine the temperature and diet parameters to optimize growth and mortality of juvenile sea urchins. In Phase 2, we will concentrate on large-scale husbandry techniques, grow-out systems, and land vs. ocean-based culture methods.