Shimane Prefecture Fisheries Technology Center research report

We performed hearing investigation to elucidate the cause that decreased of production by wakame culture in Shimane (Japan). As a result, production of cultured wakame happens by decrease of a producer. On the other hand, volume of production per producer is a tendency to sideways movement. On the other hand, volume of production per fishery worker is a tendency to sideways movement. Productivity after 1991 deteriorates in comparison with before 1990. As for the age structure, a fisherman of the over-sixties occupies 70%. However, there is not a young fisherman equal to or less than 40 years old. In other words, as a decrease factor of production in cultured wakame, a fall of work force by aging and a fall of productivity by an environmental factor was thought about with a factor.