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Displaying 31 - 40 of 538
| Location | Gear | Catch | Technique | Bycatch species | Type | Results |
|---|---|---|---|---|---|---|
Location Washington State |
Gear | Catch Trout | Technique
Acoustic deterrent devices
|
Bycatch species Pinnipeds | Type Field study in the wild | Results Over time, noxious bait, consisting of dead steelhead containing lithium chloride, did not prevent California sea lion (Zalophus californianus) predation of Washington steelhead trout (Salmo gairdneri).
Acoustic harassment devices worked only for a short time in reducing California sea lion depredation before sea lions began to habituate to sounds. Worked temporarily, then habituation occurred |
Location Norway |
Gear
Hooks-and-Lines
|
Catch Multiple species | Technique
Sub-surface sets (gillnets)
|
Bycatch species Seabirds | Type Field study in the wild | Results Bird-scaring lines and an underwater setting funnel reduced seabird bycatch in longlines off the coast of Norway. Catch of haddock (Melanogrammus aeglefinus), torsk (Brosme brosme), and ling (Molva molva) increased with use of the underwater setting funnel. |
Location Norway |
Gear
Hooks-and-Lines
|
Catch Multiple species | Technique
Bird-scaring devices
|
Bycatch species Seabirds | Type Field study in the wild | Results Bird-scaring lines and an underwater setting funnel reduced seabird bycatch in longlines off the coast of Norway. Catch of haddock (Melanogrammus aeglefinus), torsk (Brosme brosme), and ling (Molva molva) increased with use of the underwater setting funnel. |
Location Hawaii |
Gear
Hooks-and-Lines
|
Catch Swordfish | Technique
Dyed bait
|
Bycatch species Seabirds | Type Field study in the wild | Results Dyed bait, streamer lines, and weighted bait used in Hawaii longlines each resulted in reduced contact between seabirds (Black-footed (Phobastria nigripes) and Laysan (Phoebastria immutabilis) albatrosses) and bait. Reduced contact with bait |
Location Hawaii |
Gear
Hooks-and-Lines
|
Catch Swordfish | Technique
Bird-scaring devices
|
Bycatch species Seabirds | Type Field study in the wild | Results Dyed bait, streamer lines, and weighted bait used in Hawaii longlines each resulted in reduced contact between seabirds (Black-footed (Phobastria nigripes) and Laysan (Phoebastria immutabilis) albatrosses) and bait. Reduced contact with bait |
Location Hawaii |
Gear
Hooks-and-Lines
|
Catch Swordfish | Technique
Sub-surface bait setting
|
Bycatch species Seabirds | Type Field study in the wild | Results Dyed bait, streamer lines, and weighted bait used in Hawaii longlines each resulted in reduced contact between seabirds (Black-footed (Phobastria nigripes) and Laysan (Phoebastria immutabilis) albatrosses) and bait. Reduced contact with bait |
Location Hawaii |
Gear
Hooks-and-Lines
|
Catch Swordfish and tuna | Technique
Dyed bait
|
Bycatch species Seabirds | Type Field study in the wild | Results Dyed bait, alternative offal discards, bird-scaring devices (streamer lines & towed buoys), and night sets reduced seabird (Black-footed (Phobastria nigripes) and Laysan (Phoebastria immutabilis) albatrosses) bycatch in the Hawaiian swordfish and tuna longline fisheries. Alternative offal discards worked by distracting seabirds from hooked bait.
Dyed bait did not affect the catch of target and marketable species (all marlin and tuna species, swordfish, shortbill spearfish, opah, wahoo, and dolphinfish), but it reduced catch of blue sharks. |
Location Hawaii |
Gear
Hooks-and-Lines
|
Catch Swordfish and tuna | Technique
Alternative offal discharge
|
Bycatch species Seabirds | Type Field study in the wild | Results Dyed bait, alternative offal discards, bird-scaring devices (streamer lines & towed buoys), and night sets reduced seabird (Black-footed (Phobastria nigripes) and Laysan (Phoebastria immutabilis) albatrosses) bycatch in the Hawaiian swordfish and tuna longline fisheries. Alternative offal discards worked by distracting seabirds from hooked bait.
Dyed bait did not affect the catch of target and marketable species (all marlin and tuna species, swordfish, shortbill spearfish, opah, wahoo, and dolphinfish), but it reduced catch of blue sharks. |
Location Hawaii |
Gear
Hooks-and-Lines
|
Catch Swordfish and tuna | Technique
Bird-scaring devices
|
Bycatch species Seabirds | Type Field study in the wild | Results Dyed bait, alternative offal discards, bird-scaring devices (streamer lines & towed buoys), and night sets reduced seabird (Black-footed (Phobastria nigripes) and Laysan (Phoebastria immutabilis) albatrosses) bycatch in the Hawaiian swordfish and tuna longline fisheries. Alternative offal discards worked by distracting seabirds from hooked bait.
Dyed bait did not affect the catch of target and marketable species (all marlin and tuna species, swordfish, shortbill spearfish, opah, wahoo, and dolphinfish), but it reduced catch of blue sharks. |
Location Hawaii |
Gear
Hooks-and-Lines
|
Catch Swordfish and tuna | Technique
Night sets
|
Bycatch species Seabirds | Type Field study in the wild | Results Dyed bait, alternative offal discards, bird-scaring devices (streamer lines & towed buoys), and night sets reduced seabird (Black-footed (Phobastria nigripes) and Laysan (Phoebastria immutabilis) albatrosses) bycatch in the Hawaiian swordfish and tuna longline fisheries. Alternative offal discards worked by distracting seabirds from hooked bait.
Dyed bait did not affect the catch of target and marketable species (all marlin and tuna species, swordfish, shortbill spearfish, opah, wahoo, and dolphinfish), but it reduced catch of blue sharks. |