Longline Fishing


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Longline Fishing

 

the catching of fish and squid with long-lined fishing gear having hooks on the ends. Longline fishing is used mainly for valuable fish, such as tuna and salmon, that live in small concentrations at the bottom or in the open sea.

Longlines may be horizontal or vertical. A horizontal longline consists of a main line, to which are attached branch lines with hooks and supporting buoys. In a bottom longline the main line is as much as 4 km long; the branch lines measure 0.7–1.5 m and are spaced 1.5–2.5 m apart. Drifting longlines, the type used for tuna, measure as much as 120 km long; the branch lines are 20–25 m long and are spaced 45–55 m apart.

A vertical longline for squid consists of a line as much as 100 m in length and equipment weighing 300–800 g, including 20–80 lures, each with 30–40 hooks; the distance between the lures is 20–60 cm.

References in periodicals archive ?
Researchers then calculated how much shark hotspots overlapped with global longline fishing vessels -- the type of fishing gear that catches most open-ocean sharks.
They then calculated how much the hotspots were overlapped by global fleets of large, longline fishing vessels - the type of fishing gear that catches most pelagic sharks - with each vessel capable of deploying 100 km long lines bearing 1200 baited hooks daily.
They then calculated how much the hotspots were overlapped by global fleets of large, longline fishing vessels -- the type of fishing gear that catches most pelagic sharks.
As SIOFA continues to develop related conservation management measures for fish species, the organization does not rule out including oilfish caught by Taiwan's longline fishing vessels in the Indian Ocean in future, the Fisheries Agency said.
These results indicate that the effects of longline fishing on skate nursery areas may be similar to the effects of bottom trawling.
Its aging community, mostly fisherfolk, still practices longline fishing to preserve its seascapes.
Under the project, boats would be converted into vessels for longline fishing.
Bluefin tuna are harvested on both sides of the Atlantic, using primarily harpoon and rod-and-reel in the west and seining nets and longline fishing in the east.
The Virginia Institute of Marine Science (VIMS) took the photo Friday during a longline fishing survey.
To materialize these concerns, a campaign was announced whereby the fisheries industry, consisting over 1,250 pole-and-line, handline and longline fishing vessels and processors would move one step ahead to reduce and phase out use of plastics and intercept ocean plastics in their one-million square kilometres of Exclusive Economic Zones (EEZs).