Response Statement - Atlantic Bluefin Tuna
This iconic fish has been heavily exploited for over 40 years and the current abundance of spawning individuals is the lowest observed. Fishing is the main threat to the viability of the species and despite management efforts for the past 30 years to rebuild the population, there is little sign of population increase.  The abundance of spawning fish has declined by 69% over the past 2.7 generations. While the cause of the decline, overfishing, is understood, it has not ceased and it is not clearly reversible. The spawning segment of the species was exposed to the Deepwater Horizon oil spill in a portion of its spawning area in the Gulf of Mexico. While the effects of the spill on the species are currently unknown, it may represent an additional threat.
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- "Response Statement - Atlantic Bluefin Tuna" (2011-12-08) (PDF format, 4.18 KB)
Canadian Wildlife Service
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