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Published byMuriel Jennings Modified over 9 years ago
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Oceans' Vocabulary Unit 4
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GROUND FISH fish that live on, in, or near the bottom of the body of water they inhabit. Examples –cod, haddock, red fish, flounder
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PELAGIC fish that live near the surface or in the water column of coastal or ocean waters (but not on the bottom) Examples- herring, bluefin tuna, anchovies
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RECRUITMENT Means the fish grow to a certain size or reproductive rate Refers to age a fish can be caught and counted in net
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YEAR-CLASS consist of all fish born in the same year.
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FECUNDITY The number of eggs which is laid during one spawning period
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Methods of Fishing http://www.montereybayaquarium.org/cr/cr _seafoodwatch/sfw_gear.aspx http://www.montereybayaquarium.org/cr/cr _seafoodwatch/sfw_gear.aspx http://www.montereybayaquarium.org/cr/cr _seafoodwatch/sfw_gear.aspx
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OTTER TRAWLER Trawling is a method of fishing that involves actively dragging or pulling a trawl through the water behind one or more trawlers Otter trawlers deploy one or more parallel trawls kept apart horizontally using otter boards. These trawls can be towed in midwater or along the bottom. otter boards otter boards
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Otter trawler
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LONGLINING longliners set a single line of hooks, up to 130 km long, behind the boat. Attached to it are literally thousands of baited hooks
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GILLNET A fishing net set vertically in the water so that fish swimming into it are entangled by the gills in its mesh
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PURSE SEINE A fishing seine is a net made of a long wall of netting that is drawn into the shape of a bag to enclose the catch Usually involves two boats
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BYCATCH fish caught unintentionally in a fishery while intending to catch other fish.
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TARGET CATCH The species which the fishermen intentionally or are licensed to catch and keep
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STOCK Fish stocks are the population of a particular species of fish, for which growth, recruitment, mortality and fishing mortality are the only significant factors in determining the population. speciesfishspeciesfish
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MAXIMUM SUSTAINABLE YEILD MSY the largest yield (or catch) that can be taken from a species' stock over an indefinite period to maintain the population size at the point of maximum growth rate by harvesting the individuals that would normally be added to the population
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