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The purse seine is a preferred technique for capturing fish species which school, or aggregate, close to the surface: sardines, mackerel, anchovies, herring, and certain species of tuna (schooling); and salmon soon before they swim up rivers and streams to spawn (aggregation). Boats equipped with purse seines are called purse seiners.
A Colville Tribe biologist reports that during these two years the tribe harvested 3,163 hatchery Chinook while releasing 2,346 wild Chinook with only 1.4% direct or immediate mortality using purse seines, [35] whereas the tangle net was far less productive but had an approximate 12.5% mortality. Researchers commented that the use of recovery ...
The purse seine, widely used by commercial fishermen, is an evolution of the surround net, which in turn is an evolution of the seine net. A large net is used to surround fish, typically an entire fish school, on all sides. The bottom of the net is then closed by pulling a line arranged like a drawstring used to close the mouth of a purse.
A traditional dug out canoe between 3–18 meters long is used in Nigeria for artisanal fishing. Artisanal fishers in this area use gear that included, "cast nets, handlines, basket traps, longlines, set gillnets and beach and purse seines". [5]
The British meaning is based on the idea that the topic will be on the table for only a short time and is there for the purpose of being discussed and voted on; the American meaning is based on the idea of leaving the topic on the table indefinitely and thereby disposing of it, i.e. killing its discussion.
Purse seine boats encircling a school of menhaden Commercial herring catch. Traditional commercial fisheries were directed towards high value ocean predators such as cod, rockfish and tuna, rather than forage fish. As technologies developed, fisheries became so effective at locating and catching predator fish that many of the stocks collapsed.
The Atlantic horse mackerel is fished for commercially using trawls, longlines, purse seines (using artificial light), traps and on line gear. In 1999 the Food and Agriculture Organization stated that the total catch reported to it was 322 207 tonnes with the largest catches being in the Netherlands and in Ireland. [4]
Crevalle jack is taken by a number of fishing methods, including haul seines, gill nets, purse seines, trawls, handlines and trolling lines. [11] The abundance of the species in Trinidad leads to the fish being taken in several quite different types of fishery; demersal trawls, artisanal gill nets and even beach seines, which illustrates the ...