Optimizing Growth and Rearing Techniques for Larvae and Juveniles of the Sea Cucumber Holothuria arguinensis

The ever-growing demand for sea cucumbers is a threat to these echinoderms and their habitats; however, way relieve stock pressure lies in meeting through aquaculture. As such, this study aimed improve the growth survival percentage of Holothuria arguinensis during larval development, settlement juvenile growth. Three diets microalgae (Diet RbPt = Rhodomonas baltica + Phaeodactylum tricornutum; Diet RbSm Skeletonema marinoi; RbCc Chaetoceros calcitrans) were administered daily phase. Additionally, three substrates supplied (pvc rolls, wavy pvc plaques tile) at different depths order determine most favourable settlement. Lastly, potential benefits on from introducing macroalgae (Sacchoriza polyschides) diet assessed over period 6 months. Despite larvae under having presented larger mean width, H. fed with higher end trial. No preferences noted among tested substrates, regardless diet. juveniles added S. polyschides showed increased weight length when compared individuals that not seaweed.