Factors affecting elasmobranch escape from turtle excluder devices (TEDs) in a tropical penaeid-trawl fishery. Study Type: Field study in the wildLocation: Northern AustraliaTarget catch: Tiger prawn (Penaeus semisulcatus and P. esculentus) and endeavor prawn (Metapenaus endeavouri and M. ensus)Effect on bycatch species: TEDs facilitated the escape of large elasmobranchs, with bar spacing and TED orientation acting as important design factors affecting escape. Effect on target catch: Not testedArticle: Factors affecting elasmobranch escape from turtle excluder devices (TEDs) in a tropical penaeid-trawl fishery. Bycatch species: ElasmobranchsReduction technique: Excluder devicesFishing Gear: Trawls
The effectiveness of a modified turtle excluder device (TED) in reducing the bycatch of elasmobranchs in the Atlantic seabob (Xiphopenaeus kroyeri) industrial trawl fishery of Guyana Study Type: Field study in the wildLocation: GuyanaTarget catch: Seabob shrimp (Xiphopenaeus kroyeri) Effect on bycatch species: 40% decline in elasmobranch catch rate; mean size of elasmobranch captured reduced by 6.3% Effect on target catch: Not testedArticle: The effectiveness of a modified turtle excluder device (TED) in reducing the bycatch of elasmobranchs in the Atlantic seabob (Xiphopenaeus kroyeri) industrial trawl fishery of Guyana Bycatch species: ElasmobranchsReduction technique: Excluder devicesFishing Gear: Trawls
Permanent magnets reduce bycatch of benthic sharks in an ocean trap fishery Study Type: Field study in the wildLocation: New South Whales, AustraliaTarget catch: SnapperEffect on bycatch species: Significantly reduced interactions with elasmobranchsEffect on target catch: Increased target catch ratesArticle: Permanent magnets reduce bycatch of benthic sharks in an ocean trap fishery Bycatch species: ElasmobranchsReduction technique: Electromagnetic deterrentsFishing Gear: Traps
Fishing gear modifications to reduce elasmobranch mortality in pelagic and bottom longline fisheries off Northeast Brazil Study Type: Field study in the wildLocation: BrazilTarget catch: Tuna (pelagic) sharks (bottom)Effect on bycatch species: Rates of external hooking were significantly higher with circle hooksArticle: Fishing gear modifications to reduce elasmobranch mortality in pelagic and bottom longline fisheries off Northeast Brazil Bycatch species: ElasmobranchsReduction technique: Circle hooksFishing Gear: Hooks-and-Lines
Field Study Study Type: Study in the labLocation: Macduff Marine Aquarium, UKTarget catch: n/aEffect on bycatch species: Species significantly avoided magnets Effect on target catch: n/aArticle: The effects of neodymium-iron-boron permanent magnets on the behavior of the small spotted catshark (Scyliorhinus canicula) and the thornback skate (Raja clavata) Bycatch species: SharksSkates/RaysElasmobranchsReduction technique: Electromagnetic deterrentsFishing Gear: Non-specific
Field Study Study Type: Field study in the wildLocation: Central PacificTarget catch: pelagic sharks and fishesEffect on bycatch species: examining rates of post-release mortality from longline gearEffect on target catch: examined in other research Bycatch species: ElasmobranchsFishing Gear: Hooks-and-Lines
Field Study Study Type: Field study in the wildLocation: Lake Maracaibo, VenezuelaTarget catch: shrimpEffect on bycatch species: None, reduced bycach capture rateEffect on target catch: None Bycatch species: SharksSkates/RaysBony FishesElasmobranchsInvertebratesReduction technique: Deep setsSub-surface sets (gillnets)Fishing Gear: Gillnets
Field Study 844 Study Type: Field study in the wildLocation: VenezuelaTarget catch: shrimpEffect on bycatch species: Decrease of 26-32%Effect on target catch: Maintained or increasedArticle: The use of devices to reduce bycatch in Venezuelan shrimp fisheries and the FAO Code of Conduct for Responsible Fishing Bycatch species: SharksSkates/RaysBony FishesElasmobranchsInvertebratesReduction technique: Modified ground gear (mobile)Fishing Gear: Trawls
Field Study Study Type: Summary studyLocation: Costa RicaTarget catch: mahi-mahi, tunas, marlins, sharksArticle: Impact of Costa Rican longline fishery on its bycatch of sharks, stingrays, bony fish and olive ridley turtles (Lepidochelys olivacea) Bycatch species: SharksSkates/RaysBony FishesElasmobranchsSea TurtlesFishing Gear: Hooks-and-Lines
Field Study Study Type: Field study in the wildLocation: South CarolinaTarget catch: None reportedEffect on bycatch species: Barium-ferrite magnets significantly reduced catches of blacktip sharks and southern stingrays. Effect on target catch: No impact on teleostsArticle: Analysis of permanent magnets as elasmobranch bycatch reduction devices in hook-and-line longline trials Bycatch species: ElasmobranchsReduction technique: Electromagnetic deterrentsFishing Gear: Hooks-and-Lines
