Toshi's work

The strategy of f infish culture founding in Chile Masatoshi FUTAGAWA CORDUNAP February 28, 2012 Chile is trading country, concluded a treaty (FTA, EPA, TPP etc.) with 58 counties and exports primary industry materials such as copper ore, fruits and salmon etc. Economic situation of the country grows well and it join OECD in 2010. Salmons and trout exportation grew to 500 thousand ton (2.3 billion USD) in 2007 but there was an outbreak of virus (ISAV) and reduced to less than one half. Also, coastal fish resources decreased much due to overfishing and affect coastal life which is happening all over the world. Thus, it needs alternatives culture species of salmons to minimize risk and recover resource of coastal fish to improve coastal life. The keywords are “Sustainability”, “Minimum contamination” and “Less energy consumption”. I will write what are the needs and how to fish culture founding according to those key words. 1.     Conditions ...

I worked in Ecuador under JICA http://www.jica.go.jp/ project from 1993 to 1997. I transfered technology of broodstock collection, seed production and juvenile rearing about flounder ( Paralichthis woolmani ) and white snook ( Centropomus viridis ). Maturation control by water temperature is one of the most useful technique that supply seed on demand, synchronize to rotifer production and reduce cost. The system consist broodstock tank (17.5 ton, 0.9 m depth) , egg collection tank, filter tank, heat pump and UV, and rearing water recirculate by pump. Flounder (Biomass 47Kg, 8 males and 11 females) spawned 165 million egg naturally from June 1995 to May 1997. The spawning was abundant between 18 to 20 C. I use same method in Malawi with carps, Barbus litamba “Thamba”, Labeo cyrinduricus “Ningwi” and Clarias gariepinus “Mlamba” are mature at water temperature 27 to 29 ℃ . Thamba and Ningwi spawn egg after hormone injection and produce some hatch-out fry. １９９３年から１９９７年に南米のエクアド...