1. Hachinohe Field station, Fisheries Resources Institute, Japan Fisheries Research and Education Agency
2. Niigata Field station, Fisheries Resources Institute, Japan Fisheries Research and Education Agency
3. Fisheries Resources Institute, Japan Fisheries Research and Education Agency
4. Hatsukaichi Field station, Fisheries Resources Institute, Japan Fisheries Research and Education Agency
5. Yaeyama Field station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency
6. Shiogama Field station, Fisheries Resources Institute, Japan Fisheries Research and Education Agency