Demochelys coriacea (Leatherback sea turtle)

Displaying 1 - 10 of 14

Study Type: 

Summary study

Location: 

Northwest Atlantic

Target catch: 

N/A

Effect on bycatch species: 

N/A

Effect on target catch: 

The northwest Atlantic population of leatherback turtles faces potentially common widespread threats from predation and fishing gear across its range.

Article: 

Bycatch species: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

South-western Atlantic Ocean

Target catch: 

Tuna, blue sharks, swordfish

Effect on bycatch species: 

De-hooking was decreased from 25% to 5.8% in loggerhead sea turtles when circle hooks were used.

Effect on target catch: 

Article: 

Study Type: 

Field study in the wild

Location: 

Equatorial Atlantic Ocean

Target catch: 

Tuna

Effect on bycatch species: 

Catch rates were lower for leatherback sea turtles and pelagic stingrays but not sailfish when circle hooks were used

Effect on target catch: 

Bigeye tuna had higher catch rates when circle hooks were used

Article: 

Study Type: 

Field study in the wild

Location: 

Equatorial Atlantic Ocean

Target catch: 

Tuna

Effect on bycatch species: 

Sailfish, pelagic stingrays, and leatherback sea turtles, had higher catch rates on J-style hooks

Effect on target catch: 

Bigeye and yellowfin tuna had higher survival rates when circle hooks were used

Article: 

Study Type: 

Field study in the wild

Location: 

Atlantic

Target catch: 

swordfish and tuna

Effect on bycatch species: 

Reduced interactions

Effect on target catch: 

Swordfish catch decreased when circle hooks were baited with squid but increased when baited with mackerel. Tuna catch increased when circle hooks were baited with squid but decreased when baited with mackerel.

Article: 

Study Type: 

Field study in the wild

Location: 

Tropical northeast Atlantic

Target catch: 

Swordfish

Effect on bycatch species: 

Leatherback interactions can be reduced by 55% in this fishery by switching from J-style to circle hooks.

Effect on target catch: 

Non reported

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

Western North Atlantic

Target catch: 

Swordfish and tuna

Effect on bycatch species: 

Circle hooks decreased loggerhead and leatherback catch; even more effective for loggerheads when combined with mackerel bait

Effect on target catch: 

Circle hooks combined with mackerel bait increased swordfish catch by weight. With squid, decreased swordfish catch, increased bluefin and albacore tuna catch. Mackerel bait decreased bigeye and albacore tuna catch.

Article: 

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