Bony Fishes

Displaying 41 - 50 of 66

Study Type: 

Field study in the wild

Location: 

Hawaii

Target catch: 

Bigeye tuna

Effect on bycatch species: 

Catch rates on circle hooks were significantly lower than on Japanese style and "J" hooks for 16 and 8 species respectively. Fish length was significantly shorter for four species on Japanese style hooks and for three species on "J" hooks. Survival was

Effect on target catch: 

There were no significant differences in catch, catch rate or mean length for bigeye tunas. Survival was significantly higher for bigeye tuna caught on circle vs. Japanese style hooks.

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

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 white marlin.

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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Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

Northern Australia

Target catch: 

Prawns

Effect on bycatch species: 

JT 2 design reduced finfish bycatch by 5%

Effect on target catch: 

Caught 5.2% more tiger prawns and 6.9% more endeavour prawns than standard net

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

New South Whales, Australia

Target catch: 

School prawn

Effect on bycatch species: 

Retained fewer fish

Effect on target catch: 

In experiment 2, where a trawler was placed in front of the mouth of the net, the selection range of school prawns was incrementally smaller from the 1-m square-mesh codend to the 3-m square mesh codend compared to the diamond mesh codend and school praw

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

US Atlantic

Target catch: 

Tuna and swordfish

Effect on bycatch species: 

Pelagic stingrays had higher catch rates on J-style hooks and survival rates of dolphinfish and escolar were higher when circle hooks were used (fall and spring respectively)

Effect on target catch: 

Catch rates of yellowfin tuna caught in the fall were higher on circle hooks. Yellowfin tuna were caught four times as often in the mouth when circle hooks were used in the fall.

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

New South Wales, Australia

Target catch: 

Prawns

Effect on bycatch species: 

Haulback delay of 10-15 seconds allowed juvenile red spot to escape through the square mesh panels

Effect on target catch: 

No difference in the catch or weight of prawns

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

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