Towards Acoustic Discrimination of Tuna Species at FADS

Date Added:September 12, 2016
Downloaded:929 times
Tags:Bigeye Tuna, Bycatch, Conservation Measures, FADs, Purse Seine, Skipjack, Sticky, Tuna, Yellowfin Tuna
Language:English

Description

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.