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Fishing Techniques

Alaska Pollock Bottom Trawling

Main Components

Aquatic species

Target Species
Gadidae (Cods and haddocks) Alaska pollock(=Walleye poll.)

Gear types: Bottom otter trawls

Bottom otter trawls

A bottom otter trawl is a cone-shaped net consisting of a body, normally made from two, four and sometimes more panels, closed by one or two codends and with lateral wings extending forward from the opening. A bottom trawl is kept open horizontally by two otter boards. A boat can be rigged to tow a single or two parallel trawls from the stern or from two outriggers.

Vessel types: Otter trawlers

These are trawlers on which the fish is preserved by freezing.

Characteristics

Species EnvironmentAlaska pollock is a benthopelagic species found in depths ranging between 0-975 m over the continental shelf and the upper slope. Generally demersal but sometimes near the surface. Performs diurnal vertical migrations. Feeds on fishes and crustaceans, mainly on krill. Spawning individuals are often targeted solely for the roe.



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