Bird-scaring devices

A number of devices used to disturb birds from foraging on bait. These include streamers attached to a pole suspended above the area where bait is set or placed in the water, towed buoys, and water jets.

Displaying 1 - 10 of 19

Study Type: 

Field study in the wild

Location: 

Bering Sea

Target catch: 

Pacific cod

Effect on bycatch species: 

Integrated weight longlines paired with streamer lines eliminated surface foraging and shearwater catch by 97%; integrated weigh longlines reduced surface forager catch rates by 91% and unweighted longlines with paired streamer by 98%

Effect on target catch: 

Target catch rates were not affected

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

South Africa EEZ

Target catch: 

Tuna and swordfish

Effect on bycatch species: 

Combination of bird-scaring lines, weighted lines, and night sets yielded zero moralities.

Effect on target catch: 

No effect

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

South Africa

Target catch: 

Tuna

Effect on bycatch species: 

Hybrid lines appeared to reduce sea bird attacks, but not statistically conclusive

Effect on target catch: 

None reported

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

Western North Pacific

Target catch: 

Tunas and swordfish

Effect on bycatch species: 

Number of albatross and shearwater attacks were reduced with paired tori lines. Secondary attacks were also significantly lower with paired tori lines.

Effect on target catch: 

None reported

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

Southern Ocean

Target catch: 

Southern bluefin tuna

Effect on bycatch species: 

The use of both tori-lines and blue-dyed bait (squid and fish) resulted in no interactions with seabirds

Effect on target catch: 

None reported

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

North Pacific Ocean

Target catch: 

None reported

Effect on bycatch species: 

In experiement 1, the mean number of seabirds appearing and the catch per unit effort (for seabirds) was not statistically different between the four tori-lines. In experiment 2, seabird attack rates (Laysan albatross and shearwater) were not statistic

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

South Africa

Target catch: 

tuna

Effect on bycatch species: 

The mean total attack rate was similar for each design but diving birds attacked further astern in response to both tori line types compared to surface foraging birds. The "hybrid" line did not allow attacks by divers within 50 m but the "light" line al

Effect on target catch: 

None reported

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

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