Toshi's work

Sinking death syndrome during finfish larviculture Masatoshi FUTAGAWA / CORDUNAP June 30, 2012 Phenomenon Sinking death syndrome occur during early life stage of finfish larviculture, 3 to 7 days post hatch-out (DPH), that larvae settle on bottom at nighttime mostly and it makes mass mortality due to bacteria contamination and anoxia. Several species has the syndrome and that is one of the bottlenecks of mass production. I had the syndrome during the larviculture of Graus nigra , Pacific beakfish ( Oplegnathus insignis ), Japanese flounder ( Paralichthys olivaceus ) and Grater amberjack ( Seriola dumerili ). Causes Increasing body density Finfish larvae consume yolk and oil droplet few days after hatch-out and change body density. Usually, body density of larvae is heavier than water (1.0236±0.0001 at WT 25 ̊C). According to Teruya et al. 2008 , Greater amberjack larva shows it consume yolk and oil droplet until 4 DPH and body water contents reduce from 2 DPH (93.5...

The combination of renewable energy and Marine ranching in Chile Masatoshi FUTAGAWA / CORDUNAP June 10, 2012 Food, water and energy are essential for human life not only to maintain the life but also for the development of the country. Industry activities depend on availability of energy that connects to economy development. Thus, countries intent to secure energy source and energy shortage had made wars in recent history. Fossil fuels (petroleum, natural gas, methane hydrate) are limited or non-renewable resources and those create carbon dioxide during processing and consumption which cause of global worm phenomenon. Suppose to be nuclear electric power minimize the problem, but the technology needs more improvements as safe plant operation and treatment of radioactive waste material. Especially, Three miles island, Chrnobil and Fukushima incidents show that serious contamination occurred once accident occurred. Hence, we shift to renewable energy which has minimum cont...