Toshi's work

Improvement of seed production by   SISP-B (Semi Intensive Seed Production with Balanidae) Abstract Wild captured cabrilla común ( Paralabrax humeralis ) spawn 19 million eggs and 9 million larvae hatch-out from November 2018 to April 2019. The spawning occurred water temperature 18 to 20 °C mainly. Several SISP （ Semi Intensive Seed Production ） were operated and improved the method. SISP method is different from intensive method as SISP feed natural growing wild copepod instead of rotifer and Artemia that create intensively. Thus SISP not only require several tanks and equipment (pump, filter, UV etc.) but also high level technique and experience. SISP makes anybody produce premium juvenile easily without large investment. Remarkably we found that the larvae eat picoroco nauplius ( Austromegabalanus psittacus ) which nauplius grows bigger and longer than copepod and blue mussel. Also produce picoroco nauplius easier than copepod that collect in coast and just hang in the SI...

Development of loco seed production at North of Chile Masatoshi FUTAGAWA September 19, 2016 Our project, between UNAP and regional government of Tarapaca chile, develop mas seed production method of loco ( Concholepas concholepas ) in order to recover loco natural resources from 2013 to 2015. We completed the method that broodstock rearing, maturation and capsule incubation. Hatch-out larvae are produced all year round constantly and over 200 million of hatch-out larvae are released to our coast. Also we produced some larvae which grew more than 130 days after hatch-out with clear water which filtered, disinfect ed by UV and sterilized with autoclave . However, we couldn’t develop mass seed production method.   The mass seed production technology is under studying by decades and aim is not accomplish yet in Chile . Because of the following reasons make hard to achieve. Loco larvae has four month planktonic period (veliger stage) that very long period c...