ISSF is sponsoring research to develop a methodology to achieve acoustic selectivity of tropical tuna species, exploring the frequency response of tunas with and without swim-bladders. Swim-bladdered and non-swim-bladdered species typically have different contrasting frequency responses. This research could be applied during fishing operations to help distinguish skipjack (non-swim-bladdered fish) from bigeye and yellowfin tunas (swim-bladdered fish) — and avoid catching undesirable tuna species in FAD sets.
Bigeye Tuna,
Bycatch,
Conservation Measures,
FADs,
Purse Seine,
Skipjack,
Sticky,
Tuna,
Yellowfin Tuna
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