Acoustic Characterization of Pingers on Shark Control Nets
Presenter's Organization
Center for Marine Science & Technology, Curtin University
File
Document
/sites/default/files/Erbe.pdf
Unanswered Forum Topics
The effects of hanging ratio on the catch of harbor porpoise and targeted finfish species
Presenter's Organization
NEFSC and A.I.S. Inc.
File
Document
/sites/default/files/Milliken.pdf
Review of European trials of barium sulfate and metal oxide nets
Presenter's Organization
National Institute of Aquatic Resources, Technical University of Denmark and Sea Mammal Research Unit, University of St. Andrews
File
Document
/sites/default/files/Larsen.pdf
Cod pots, an alternative fishing gear to gillnet fisheries for cod?
Presenter's Organization
Project Seals and Fisheries, Institute of Coastal Research
File
Document
/sites/default/files/Konigson.pdf
To ping or not to ping? Use and abuse of acoustic pingers to reduce interactions between small cetaceans and gillnet fisheries
Presenter's Organization
University of Otago
File
Document
/sites/default/files/Dawson.pdf
Acoustic deterrents in UK gillnet fisheries
Presenter's Organization
Sea Mammal Research Unit, Scottish Oceans Institute
File
Document
/sites/default/files/Northridge.pdf
Efficacy of pingers in North Pacific salmon and squid gillnet fisheries
Presenter's Organization
National Research Institute of Fisheries Engineering
File
Document
/sites/default/files/Akamatsu.pdf
Cod traps as an ecological sound fishing gear in German waters
Presenter's Organization
German Federal Agency of Nature Conservation
File
Document
/sites/default/files/Pusch.pdf
Evaluating the impact of soak durations on bycatch of small cetaceans in the Northwest Atlantic, USA
Presenter's Organization
Northeast Fisheries Science Center, Protected Species
File
Document
/sites/default/files/Rossman.pdf
Experiences in implementing acoustic pingers in the US and Canadian fisheries
Presenter's Organization
Northeast Fisheries Science Center, National Marine Fisheries Service
File
Document
/sites/default/files/Palka.pdf
Comparison of circle hook and J hook catch rate for target and bycatch species taken in the Korean tuna longline fishery during 2005-2006
Tests were conducted on tuna longline fishing vessels in the eastern Pacific Ocean to determine if the use of J (size 4.0 traditional) or circle hooks (sizes 15, 16 and 18) and different bait resulted in differences in the catch rates of target and bycatch species. No significant differences in catch rates of the target species were found between hook types. Significant differences between J and circle hook size 15 and between J and circle hook size 16 were found in the bycatch species group (all species grouped together).
Field Study 605
Study Type
Field study in the wild
Location
eastern Pacific Ocean
Target catch
Tuna
Effect on bycatch species
Significant differences between J and circle hook size 15 and between J and circle hook size 16 were found in the bycatch species group (all species grouped together). Chub mackerel bait caught the sharks.
Effect on target catch
No significant differences in catch rates of the target species were found between hook types. The highest catch rates for tunas were found on circle hooks size 15. Squid and jack mackerel bait had the highest catch rates for tunas.
Bycatch species
Reduction technique
Fishing Gear
Field Study 605
Study Type
Field study in the wild
Location
eastern Pacific Ocean
Target catch
Tuna
Effect on bycatch species
Significant differences between J and circle hook size 15 and between J and circle hook size 16 were found in the bycatch species group (all species grouped together). Chub mackerel bait caught the sharks.
Effect on target catch
No significant differences in catch rates of the target species were found between hook types. The highest catch rates for tunas were found on circle hooks size 15. Squid and jack mackerel bait had the highest catch rates for tunas.
Bycatch species
Reduction technique
Fishing Gear
Field Study 605
Study Type
Field study in the wild
Location
eastern Pacific Ocean
Target catch
Tuna
Effect on bycatch species
Significant differences between J and circle hook size 15 and between J and circle hook size 16 were found in the bycatch species group (all species grouped together). Chub mackerel bait caught the sharks.
Effect on target catch
No significant differences in catch rates of the target species were found between hook types. The highest catch rates for tunas were found on circle hooks size 15. Squid and jack mackerel bait had the highest catch rates for tunas.
Bycatch species
Reduction technique
Fishing Gear
Field Study 605
Study Type
Field study in the wild
Location
eastern Pacific Ocean
Target catch
Tuna
Effect on bycatch species
Significant differences between J and circle hook size 15 and between J and circle hook size 16 were found in the bycatch species group (all species grouped together). Chub mackerel bait caught the sharks.
Effect on target catch
No significant differences in catch rates of the target species were found between hook types. The highest catch rates for tunas were found on circle hooks size 15. Squid and jack mackerel bait had the highest catch rates for tunas.
Bycatch species
Reduction technique
Fishing Gear
Field Study 605
Study Type
Field study in the wild
Location
eastern Pacific Ocean
Target catch
Tuna
Effect on bycatch species
Significant differences between J and circle hook size 15 and between J and circle hook size 16 were found in the bycatch species group (all species grouped together). Chub mackerel bait caught the sharks.
Effect on target catch
No significant differences in catch rates of the target species were found between hook types. The highest catch rates for tunas were found on circle hooks size 15. Squid and jack mackerel bait had the highest catch rates for tunas.
Bycatch species
Reduction technique
Fishing Gear
IWC 1990: Symposium and workshop on the mortality of cetaceans in passive fishing nets and traps
File
Document
/sites/default/files/Perrin.pdf
Mitigation strategies for mysticete gillnet entanglements in the Western North Atlantic
Presenter's Organization
New England Aquarium and Provincetown Center for Coastal Studies
File
Document
/sites/default/files/Kraus_1.pdf
Reducing bycatch with better technology in the Gulf of California shrimp fishery; Final technical and financial report to the Walton Family Foundation, submitted by World Wildlife Fund
Bycatch reduction device prototypes ("RS_INP") (industrial and artisanal versions) were tested on vessels targeting shrimp in the Gulf of California to compare bycatch-to-shrimp ratios, catch efficiency, drag resistence indicators, fuel consumption rate and selectivity with traditional versions. The industrial version of the prototype reduced bycatch-to-shrimp ratios from 20-50% and shrimp production was not reduced. The artisanal prototype also reduced bycatch-to-shrimp ratios in trawl fishing gear but comparisons were difficult to make between drift gillnets.