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 (Melvin et al. 2010).

Displaying 1 - 10 of 20

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: 

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