Traps

Traps are baited or nonbaited stationary devices set on the bottom or, less frequently, in midwater. Fish enter the trap freely but are subsequently prevented from leaving. Large traps are more common in coastal waters while smaller traps may be deployed to greater depths.
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<i>Pots</i> consists of cages or baskets used to target shellfish, cephalopods, crustaceans, and reef fish. Pots are placed in multiple sets and the location of each pot is marked with a surface buoy. <i>Fyke nets</i> and <i>stow nets</i> are fixed to the bottom and rely on currents to bring fish into contact with them. Additionally, fyke nets use "wings" to guide the fish into mesh bags, where they are captured. Both types are most commonly set near shore. <i>Barriers, weirs, fences</i> and <i>corrals</i> are used in tidal areas and span the entirety of the water column. Fish enter through a narrow opening and are then trapped in a holding compartment.
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For more detailed information, please visit the FAO Fisheries and Aquaculture Department <a href="http://www.fao.org/fishery/geartype/108/en" target="_blank"> traps </a> web page.

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Study Type: 

Field study in the wild

Location: 

Gulf of St. Lawrence, Canada

Target catch: 

Crab and whelk

Effect on bycatch species: 

Minke whales decreased swimming velocity and altered bearing when approaching a rope, particularly when ropes were black and white; some minke's altered underwater swimming trajectories when passing ropes and produced low-frequency vocalizations.

Effect on target catch: 

None reported

Article: 

Bycatch species: 

Reduction technique: 

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Study Type: 

Field study in the wild

Location: 

Mingan Archipelago, Gulf of St. Lawrence, Quebec Canada

Target catch: 

Crab and whelk

Effect on bycatch species: 

Identified detection/reaction of minke whales to buoy ropes

Effect on target catch: 

Unknown

Bycatch species: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

Lake Opinicon, Canada

Target catch: 

sunfish, bullheads, yellow perch, rock bass, black crappie

Effect on bycatch species: 

60% of turtles escaped through large hole in net

Effect on target catch: 

77% of fish escaped through large hole in net

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

Lake Opinicon, Canada

Target catch: 

sunfish, bullheads, yellow perch, rock bass, black crappie

Effect on bycatch species: 

All turtles escaped from the chimney opening

Effect on target catch: 

Retained 88% of target catch

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

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