Modified ground gear (mobile)

Modifications made to mobile fishing gear that fishes on the sea floor. An example would be the "Newhaven" spring tooth dredge, used in the Isle of Man queen scallop fishery. This dredge is wider and fishes higher off the benthos than what is typically used, and has a rubber lip instead of metal teeth (Hinz et al. 2009).

Displaying 1 - 8 of 8

Study Type: 

Field study in the wild

Location: 

Skagerrak, Norway

Target catch: 

Norway lobster (Nephrops norvegicus)

Effect on bycatch species: 

The majority of fish were separated successfully into the upper compartment

Effect on target catch: 

Not tested

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Study Type: 

Field study in the wild

Location: 

Skagerrak, Norway

Target catch: 

Northern shrimp (Pandalus borealis)

Effect on bycatch species: 

Bycatch of Norway pout was slightly reduced in the shorter trawl.

Effect on target catch: 

The trawls fished shrimp above 19 mm carapace length equally, while catch rates of shrimp below 15.5–16 mm carapace length in the shorter trawl were more than halved.

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Study Type: 

Field study in the wild

Location: 

Minch and Stanton Banks

Target catch: 

Whitefish

Effect on bycatch species: 

Removing the 'tickler' chain resulted in decreased catches of sharks and skates

Effect on target catch: 

Catch rates for flatfish, haddock and whiting did not differ. Larger anglerfish were caught without the 'tickler' in place

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Study Type: 

Field study in the wild

Location: 

Isle of Man

Target catch: 

Queen scallop

Effect on bycatch species: 

There was no significant difference in the abundance of bycatch between the traditional and new "Newhaven" dredge design.

Effect on target catch: 

The new "Newhaven" dredge caught significantly more queen scallops than the traditional dredge.

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