Sustainable Fisheries Division

U.S. Longline Bigeye Tuna Catch Limit in the Eastern Pacific

IATTC Convention Area

(Click image to view larger)

When calculating the estimated catch of bigeye tuna (Thunnus obesus) in the eastern Pacific, we use logbook data from relevant U.S. longline vessels. These data do not include fishing trips still underway or just completed. We convert the number of bigeye tuna kept to estimates of catch in metric tons using information on the long-term average weight of bigeye tuna caught in the Inter-American Tropical Tuna Commission (IATTC) Convention Area and landed in Hawaii or California.


NOAA Fisheries established a limit of 750 metric tons of bigeye tuna that may be caught in the eastern Pacific and retained by U.S. longline vessels greater than 24 meters (78.7 feet) in length. The catch limit satisfies United States obligations as a Contracting Party to the 1949 Convention for the Establishment of an Inter-American Tropical Tuna (Convention) and as a Member of the IATTC. Information about the catch limit and the IATTC is available from the IATTC.

Convention Area

The IATTC Convention Area (see map) includes waters bounded by the coast of the Americas, the 40 N. and 40 S. parallels, and the 150 W. meridian. For a complete description, see the definition of "Convention Area" at 50 CFR 300.25.