瀬戸内海東部のイカナゴ船曳網漁を対象とした漁業シミュレータの開発

Abstract

In the eastern Seto Inland Sea, the boat seine fishery for Japanese Sand Lance is flourishing, and appropriate control of fishing operation is important from industrial, cultural and ecological points of view. In this study, surveys on actual condition of the fishery were conducted and a fishing operation simulator was developed, which consisted of a 3-D hydrodynamic model, a fish behavior model and a fishing operation model. Validation analysis showed that the simulator had good reproducibility of temperature and salinity fields, fishing ground distributions and time series of fish catches and sales. Moreover, the simulation results pointed to the particular importance of quantifying vertical migration properties of this species for improving of accuracy of the simulator.