Long-term effectiveness of pingers on a small population of finless porpoises in Japan

Omura Bay, Japan
Target catch
Not studied
Study Type
Field study in the wild
Effect on target catch
Not tested
Effect on bycatch species
Initially, pinger use decreased porpoise encounter rates with gillnets. However, this effect decreased over time but was effective later after temporary cessation of pinger use.
Fishing Gear
Reduction technique