Japan International Research Center for Agricultural Sciences (JIRCAS) 
■Disciplines : Fisheries, Crustacean physiology, Aquaculture

TEL : +81 
FAX : +81 

Professional Experience & Education

■ Professional Experience
2004: Associate Professor, Department of Global Agricultural Sciences, Graduate School of Agricultural and Life Sciences, the University of Tokyo

1999: Senior Research Scientist, Japan International Research Center for Agricultural Sciences

1998: Visiting Lecturer, Faculty of Agriculture, the University of Tokyo

1994: Research Scientist, Japan International Research Center for Agricultural Sciences

1993: Research Fellow, Japan Society for the Promotion of Science

■ Education
1993: Ph.D., Fisheries Science, Graduate School of Agriculture, the University of Tokyo

1990: M.S., Fisheries Science, Graduate School of Agriculture, the University of Tokyo

1987: A.B. Cum Laude in Chemistry, Harvard University

Research Interests

Demand for shrimp is growing throughout the world, with Japan and the U.S. being the largest importers. Production has rapidly increased to meet this demand, with cultivation flourishing in Southeast Asia in particular. This has resulted in environmental problems and a shortage of shrimp spawners; thus, new means of stabilizing the industry are needed. I am conducting basic and applied research with this objective in mind. This includes basic physiological research on reproduction, molting. and osmoregulation, and the development of technology to control female maturation in captivity. Another application of my research is the development of land-based recirculating shrimp production systems and their implementation on an industrial basis.

Previous Research Examples

During 1995-2003, I was involved in an international development project on freshwater prawn farming in the Mekong Delta region of Vietnam in cooperation with Vietnam's Can Tho University. We developed new, cost-effective hatchery technology for the giant freshwater prawn, which is an important commercial species in this region, and assisted rice farmers with culturing prawns in rice paddies, e.g., "rice-prawn farming", a form of combined farming technology.
I have also been instrumental in developing Japan's first "Indoor Shrimp Production System (ISPS)" in cooperation with International Mariculture Technology Co. Ltd. The system is currently under commercial operation in Niigata Prefecture.

Publication Highlights

Kang, B.J., Okutsu, T.,Tsutsui, N., Shinji, J., Bae, S-H., and Wilder, M.N. (2014). Dynamics of vitellogenin and vitellogenesis-inhibiting hormone levels in adult and subadult whiteleg shrimp, Litopenaeus vannamei: relation to molting and eyestalk ablation. Biology of Reproduction, 90: 1-10.

Bae, S-H., Okutsu, T., Kang, B.J., and Wilder, M.N. (2013). Alterations of pattern in immune response and vitellogenesis during induced ovarian development by unilateral and bilateral ablation in Litopenaus vannamei. Fisheries Science, 79: 895-903.

Wilder, M.N., Okumura, T., and Tsutsui, N. (2010). Reproductive mechanisms in Crustacea focusing on selected prawn species: Vitellogenin structure, processing and synthetic control. Aqua-BioScience Monographs, 3: 73-110.

Wilder, M.N., Huong, D.T.T., Jasmani, S., Jayasankar, V., Kaneko, T., Aida, K., Hatta, T., Nemoto, S., and Wigginton, A. (2009). Hemolymph osmolality, ion concentrations and calcium in the structural organization of the cuticle of the giant freshwater prawn Macrobrachium rosenbergii: changes with the molt cycle. Aquaculture, 292: 104-110.

Phuong, N.T., Hai, T.N., Hien, T.T.T., Bui, T.V., Huong, D.T.T., Son, V.N., Morooka, Y., Fukuda, Y. and Wilder, M.N. (2006). Current status of freshwater prawn culture in Vietnam and the development and transfer of seed production technology. Fisheries Science, 72: 1-12.