1. Kuroshio Science Program, Graduate School of Integrated Arts and Science, Kochi University, Kochi, Japan
2. Department of Agricultural Sciences, Bicol University Guinobatan, Guinobatan, Albay, Philippines
3. Faculty of Agriculture and Marine Science, Kochi University, Japan (Present: Graduate School of Science and Technology, Tsukuba University), Tsukuba, Japan
4. CRM Unit, Bicol University Tabaco, Tabaco City, Philippines