1. Graduate School of Agriculture, Forestry and Fisheries, Kagoshima University Kagoshima Japan
2. Kagoshima University, Faculty of Fisheries Kagoshima Japan
3. Glass Eel Production Division, Fisheries Technology Institute, National Research and Development Agency, Japan Fisheries Research and Education Agency, Shibushi Kagoshima Japan
4. Momoshima Field Station, Fisheries Technology Institute, National Research and Development Agency, Japan Fisheries Research and Education Agency, Onomichi Hiroshima Japan
5. Coastal and Inland Fisheries Ecosystems Division, Fisheries Technology Institute, National Research and Development Agency, Japan Fisheries Research and Education Agency, Hatsukaichi Hiroshima Japan