Toshi's work

Seed production of common snook ( Centropomus undecimalis ) in Cuba Masatoshi Futagawa December 3, 2013 Since 2008 JICA-CIP project is running, development of seed production technique about mutton snapper ( Lutjanus analis ) and common snook ( Centropomus undecimalis ), at Santa Cruz del Sur in Cuba. The project produced some snapper and snook juveniles in 2013 with semi intensive seed production method with copepods (SISPC). It is the first history of successful marine seed production about both species in Cuba, and second of the world about common snook especially. Common snook has high demand in the market and sports fishing in Central America. However, seed production of the species is very difficult due to its small mouth which unable to intake rotifer at larva stage. The project introduced maturation inducement by HCG (Human chorionic gonadotropin) for broodstock and SISPC, rearing large pond and fed wild copepoda nauplius, for larva culture. The project collecte...

Incubation of phytoplankton ( Nannochloropsis sp., Chaetoceros sp. and T-ISO) Masatoshi Futagawa/CORDUNAP January 17, 2013 Phytoplankton are primary live feeds for shellfish larva and rotifer. And rotifer as live feeds for finfish larva that contains HUFAs which is essential to marine fish larva. Thus, constant phytoplankton production without contamination of protozoans is one of key factors to produce the larvae. Recently, there are some substitute products of phytoplankton such as dry phytoplankton and enrichment material which HUFAs concentrated. Even so, live phytoplankton is the best material for larvae culture as of present. I will introduce typical phytoplankton incubation method that is practiced for scallop larva culture in our hatchery. 1.     Medium preparation 1.1.   Seawater is filtered by fiber filters (500, 100, 50, 10, 1 and 0.5 µm) and sterilized by UV at hatchery. The water is filtered again by membrane filter (0.45 µm, Advantec...