Profile updated on 4 March 2020

SUMMARY

SUMMARY

IDENTIFICATION

SCIENTIFIC NAME(s)

Thunnus obesus

SPECIES NAME(s)

Bigeye tuna

Western and Central Pacific Ocean bigeye tuna is caught by four U.S. longline fisheries: (i) West Coast – State of California, (ii) Hawaii deep-set (tuna-targeting), (iii) Hawaii shallow-set (swordfish-targeting), and (iii) American Samoa. Each of these fisheries operates in the US EEZ and on the high seas.

This profile is for (ii) the Hawaii pelagic longline deep-set fishery, which targets primarily bigeye tuna, at grounds in the western and central Pacific. Note that this fishery also operates in the Eastern Pacific Ocean, where it catches the EPO bigeye tuna stock – which is not covered in this profile.


ANALYSIS

Strengths
    • Fishing permits, logbooks and observer programs are in place to monitor compliance and bycatch issues. The observer program coverage rate is much higher than the Western and Central Pacific Fisheries Commission mandated 5%. Interactions with sea turtles, sea birds and marine mammals have been minimized (~80% reduction) through bycatch mitigation measures. Catch limits for bigeye tuna in longline fisheries have recently been put into place.

    FISHSOURCE SCORES

    Management Quality:

    Management Strategy:

    ≥ 6

    Managers Compliance:

    ≥ 6

    Fishers Compliance:

    ≥ 6