Hiroto Maeda


Brief Biography

Dr. Hiroto Maeda is Professor of the Marine Microbiology Laboratory within the Faculty of Fisheries in Kagoshima University. He is also Director of Marine Research Center of the Faculty of Fisheries in Kagoshima University. The center aims to advance to aquaculture technology and remediation technology of marine environment. His current areas of research are focused on Molecular Microbial Ecology and Environmental Chemistry. He has projects concerning to red tide and water bloom in ocean and lakes. Also he engages in marine biomass project of algae and probiotics of fish and shellfish.

His prior professional roles include being appointed as Professor and Chair of Applied Biochemistry and technology of Aquatic Resources in Mie University, 2005-2010; Associate Professor and Chair of Applied Biochemistry and Technology of Aquatic Resources in Kagoshima University, 1995-2005; and Senior Researcher of Water and sediment Quality management at Lake Biwa Research Institute, 1983-1995.

Dr. Hiroto Maeda received his Bachelor's Degree in Fisheries from Kagoshima University in 1977, and his Master's Degree in Agriculture from Kyoto University in 1980. In 1983 he graduated with a PhD in Agriculture from Kyoto University. 

He is currently the Vice President of the Society of Antibacterial and Antifungal Agents, which aims to prevent microorganisms in clothing, food, housing and their related industries by encouraging collaborative activity between interdisciplinary researchers and technical experts, and in turn establishing global research activities. He is the President of the Auto Analyzer Association Japan, which attempts to upgrade of a large amount of chemical analysis. He is also a member of numerous Japanese Societies and academies within Fisheries Science, Limnology, Environmental Microbiology and Marine Biotechnology. His activity is shown as below address:


Advancing red tide monitoring technique and countermeasure for a sustainable aquaculture condition

In 2008 and 2009, fish of aquaculture died of red tide of Chattonella marina in southern Kyushu, its economical damage was 8.8 billion yen. We are proceeding the project of advancing red tide monitoring technique and countermeasure for a sustainable aquaculture condition. We began to monitor of red tide in Nagashima, Kagoshima Bay and Koshiki Island in 2013. Cell discrimination and counting by flow cytometry are established for rapid detection of red tide organisms. Dynamics of nutrients are analyzed through detection by autoanalyzer. An information of nutrients is important for prediction of red tide. By DNA analysis like as PCR and DGGE method, cyst of red tide organism is detected on sediment step by step. Making map of the cyst, a treatment of sediment for repress of cyst germination will be possible for prevention of red tide. Although we monitored periodically, we have big damage of new type red tide, Dictyoca sp. in 2014 and Cochlodinium sp. in 2015 in Koshiki Island where tuna aquaculture is farmed. In particular Dictyoca sp. is uncommon species in southern Kyushu. It is obscure why the organisms make a big bloom in clean island. For risk reduction of red tide, we applied to absorption of nutrients by red algae, Solieria robusta. The algae have an effective ingredient and will be important for commerce. Polyculture combined between fish and algae will be an advanced pathway for a sustainable future of aquatic environment.