抄録
The symposium “Discussion among Industry-Government-Academia on Rationalization of squid jigging fisheries at night time.” was held in the annual meeting of the Japanese Society of Fisheries Engineering in May 2015. At the symposium, participants of scientists, fishermen and government administrators made presentations and discussions from the following viewpoints; i.e. the current business environment and problems on the fisheries; clarifications of the fishing operation processes and functions of the fishing light; the progress of LED fishing light development as an energy-saving device; and approaches to improving the profitability of the fisheries.
The discussions are summarized as follows. An energy saving of the fishing lamps, especially by using the LED, is one of the most important approaches on rationalization of the fisheries. It also contributes to reduction of CO2 emissions as the international expectations. For this purpose, equalizing the light condition of LED fishing light to metal halide fishing light should be the first step. Then, an optimization of the characteristics of fishing lamps such as adequate range of wavelengths of light and its distribution that is appropriate both to the behavioral characteristics of squid and the functions of the LED light source, would be required in the next step. In addition to those, the visualization of the energy usage structures on the fisheries to optimize the energy consumption is necessary. To promote the above-mentioned approaches, the consensus-building to avoid the excessive light power competition among fishermen is necessary to realize a reduction in total energy consumption. We must continue these approaches with an industry-government-academia cooperation.
