The future of Bluefin Tuna Introducing the closed cycle, farm raised Bluefin tuna From Kindai (Kinki University), Japan By Yuji Haraguchi True World Foods Marketing Photo by Kinki University, Japan
Tuna Family Bluefin Tuna Yellowfin Tuna Southern Bluefin Tuna Albacore Tuna Bigeye Tuna Picture-Japan Bonito and Tuna Fisheries Association
Amount of Wild Caught Tuna Worldwide (10,000 Ton) Beginning of sushi boom in the U.S. Source - Ministry of Agriculture, Forestry, and Fisheries of Japan
Bluefin Tuna “Black Diamond” from the ocean • The largest and most expensive kind of tuna. • It grows as big as 1000LB in 30 years. • Its fat is known as “Toro,” which becomes the most valuable piece of sushi. • One Bluefin tuna sold at the first tuna auction at the Tsukiji fish market this year for 16 milion yen ( $180,000 ) Photos by Yuji Haraguchi 2008
Saving the Bluefin Tuna • Tunas have been overfished due to the rapid growth of the global Sushi market and as well as other markets. • Tuna fisheries worldwide generate billions of dollars annually, making them among the most valuable fisheries on Earth. The growing demand for Bluefin tunas increasingly is a cause for concern throughout the global oceans. (Monterey Bay Aquarium) • The restrictions are becoming more strict every year, especially on Bluefin tuna. • The fishing has been strictly monitored by the Tuna Regional Fisheries Management Organizations. Tuna Regional Fisheries Management Organization ICCAT - The International Commission for the Conservation of Atlantic Tunas IOTC - Indian Ocean Tuna Commission IATTC - Inter-American Tropical Tuna Commission WCPFC - Western and Central Pacific Fisheries Commission CCSBT - Commission for the Conservation of Southern Bluefin Tuna
The Conventionally “Farm - Raised” Bluefin Tuna (Mostly done in Japan, Mexico, Mediterranean, and Australia) Purse Seining Pen Feed the tunas with sardines and etc for about 3 Catch a school of young wild Bluefin tunas years. Then, release them to the market. (20-30LB) and bring them to a pen. It is “Farm raised,” but Not sustainable as it depends only on the wild tunas for resource. Pictures by Monterey Bay Aquarium
The Kindai Farm-Raised Bluefin Tuna (A joint project with Japanese government since 1970) Born in --- Kinki University (Kindai), Wakayama, Japan Raised in --- Amakusa, Kagoshima, Japan Distributed by --- True World Foods
- CLOSED CYCLE FARMING - Source – Kinki University, Japan
Challenges of farming tuna • Closed cycle farming is a common practice for other kinds of fishes such as salmon and stripped bass. • However, because tuna cannot stop swimming or they will die, the closed cycle farming presents greater challenges. • In 2002, after 32 years of R&D and over $50 Million spent, Kinki University has succeeded in spawning Bluefin tuna eggs and kept its cycle. Photos by Burimy Japan
Sustainable Feed (All the fishes are sourced only in Japan) Sardine O Nago (Sand Eel) Mackerel Photos by Burimy Japan
Farming environment Amakusa City, Kagoshima, Japan Photos by Burimy Japan
Specification • Tunas are shipped when they become about 60- 80LB/Whole. (3 years of feeding) • 10-15LB per loin (Belly and Back) • Otoro and Chutoro from Belly loins • Chutoro and Red meat from Back loins • Head On (Usually, tunas are not shipped with heads on.) Photos by Burimy Japan and Yuji Haraguchi
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