Caretta caretta (Loggerhead turtle)

Displaying 11 - 20 of 23

Study Type: 

Field study in the wild

Location: 

Central Mediterranean Sea

Target catch: 

swordfish

Effect on bycatch species: 

Circle hooks captured fewer (2) loggerheads compared to 2J hooks (9)

Effect on target catch: 

16/0 hooks resulted in a non-statistically significant decrease in catchability compared to size 2 J hooks, but statistically significant decrease compared to size 4 and 5 J hooks

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Study Type: 

Field study in the wild

Location: 

South-western Atlantic Ocean

Target catch: 

Tuna, blue sharks, swordfish

Effect on bycatch species: 

The incidental capture of loggerhead sea turtles was reduced by 55% and for leatherback sea turtles by 65% when circle hooks were used.

Effect on target catch: 

Catch rates of targeted species including bigeye and albacore tuna and blue sharks were increased with the use of circle hooks, while no difference was found for yellowfin tuna, shortfin mako or hammerhead sharks or for dolphinfish.

Study Type: 

Field study in the wild

Location: 

Georges Bank

Target catch: 

Swordfish

Effect on bycatch species: 

No signficant difference in catch rates between gangions for loggerhead sea turtles.

Effect on target catch: 

There were no differences in the mean length at capture, but signficantly more swordfish were caught on the monofilament gangions.

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Reduction technique: 

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Study Type: 

Field study in the wild

Location: 

Strait of Sicily

Target catch: 

Swordfish

Effect on bycatch species: 

Circle hooks reduced the incidental capture of immature sea turtles

Effect on target catch: 

Circle hooks did not affect catch rates or the size of the targeted catch

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Reduction technique: 

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Study Type: 

Field study in the wild

Location: 

United States

Target catch: 

Swordfish

Effect on bycatch species: 

Reduced bycatch and hook ingestion

Effect on target catch: 

No negative effect

Article: 

Study Type: 

Field study in the wild

Location: 

United States

Target catch: 

Swordfish and tuna

Effect on bycatch species: 

Increased soak time increased bycatch

Effect on target catch: 

Insignificant for swordfish but significant for bigeye tuna

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Study Type: 

Field study in the wild

Location: 

Azores

Target catch: 

Swordfish and blue shark

Effect on bycatch species: 

Did not reduce bycatch; reduced rate of throat hooking

Effect on target catch: 

Increased blue shark catch when compared to J hooks

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Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

Azores

Target catch: 

Swordfish and blue shark

Effect on bycatch species: 

Decreased throat hooking

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