Tag-A-Giant Foundation Press
Bluefin Tuna - Past and Present
August 5, 2007
The Census of Marine Life (CoML), a partner and supporter of our electronic tagging research, is helping to spread the word about bluefin tuna migratory patterns and breeding behavior revealed in recent TGF studies. CoML links our results of electronic tagging in Ireland to a once abundant population of bluefin tuna off northern Europe, suggesting that bluefin passed through Irish waters on their way north. Heavy fishing pressure in the first half of the 20th century led to their rapid demise. Bluefin have been rare in northern European waters since 1960.
Download the CoML press release to learn more. Or read Dr. Barbara Block's blog on the story.




Visit the CoML page on the story for more information, including photos, videos and details on the historic northern European bluefin tuna population.
Media Coverage
- Secrets of Bluefin Tuna, August 24, 2007, Mercapesca
- Tagged Tuna Reveal Migration Secrets, August 13, 2007, by Helen Scales, National Geographic News
- Bluefin Tuna Populations Mix For Feeding, Separate to Spawn: Study, August 6, 2007, France 24
- From Bounty to Collapse, August 6, 2007, by Melanie Patten, The Chronicle Herald
- Studies Outline History of Declining Bluefin Tuna, Reveal Migration Secrets, August 6, 2007, by AP, Boston Herald
- Atlantic Bluefin Going Way of Northern Cod, August 6, 2007, by Stephen Leahy, Inter Press Service
- Tags Reveal Tuna Migration Routes, August 6, 2007, Fish Update
- Tale of Tagged Tuna: One Swims to Cuba, the Other to Gibraltar, August 6, 2007, by Margaret Munro, Edmonton Journal
- Overfishing Takes Toll on Bluefin Tuna, August 5, 2007, Monga Bay
- Collapse of Bluefin Tuna Population Off Northern Europe Described, August 5, 2007, Science Daily
- Tuna Shift From Pet Food to Delicacy as Stocks Fall, August 5, 2007, by Alister Doyle, Scientific American
- Tags Reveal Tuna Migration Routes, August 5, 2007, by Mark Kinver, BBC News
- Lost Tuna: Studies Outline History of Declining Bluefin Tuna, August 5, 2007, by CP, Edmonton Sun
- Marine Historians Chart Collapse of Bluefin Stocks, August 5, 2007, CTV.ca
Original Scientific Journal Articles
Teo, SLH, A Boustany, and BA Block. 2007. Oceanographic preferences of Atlantic bluefin tuna, Thunnus thynnus, on their Gulf of Mexico breeding grounds. Marine Biology DOI 10.1007/s00227-007-0758-1. Link to Summary or Full Text.
Stokesbury, MJW; Cosgrove, R; Boustany, A; Browne, D; Teo, SLH; O’Dor, RK; Block, BA. 2007. Results of satellite tagging of Atlantic bluefin tuna, Thunnus thynnus, off the coast of Ireland. Hydrobiologia 582:9197. Link to Summary or Full Text.
Teo S.L.H., Boustany, A. Dewar, H., Stokesbury, M.J.W., Weng, K.C., Beemer, S., Seitz, A.C., Farwell, C.J., Prince, E.D. and B. A. Block. 2007. Annual migrations, diving behavior, and thermal biology of Atlantic bluefin tuna, Thunnus thynnus, on their Gulf of Mexico breeding grounds. Marine Biology 151:1-18. Link to Summary or Full Text.
