Shrimps Northern prawn Target Species
|A pot is designed in the form of cages or baskets made from various materials (wood, wicker, metal rods, wire netting, plastic etc.|
|These vessels are used for setting pots or traps for catching lobsters, crabs, crayfish and other similar species. |
Shrimp pot fishingShrimp pot fishing operation.
|Species EnvironmentAmong Pandalidae, Northern pink shrimp, Pandalus borealis, are found along the outer shelf between the 100 and 200 meter depth contours usually on soft, muddy bottom. Humpy shrimp, Pandalus goniurus, are usually found in water shallower than 100 meters. Other species sometimes encountered in shallow areas are conscript shrimp, Pandalus hypsinotus, and dock shrimp, Pandalus danae. Sidestripe shrimp, Pandalopsis dispar, are found in deeper slope waters. Penaeid species are widely distributed on the tropical and sub-tropical waters accounting for about 85% of the total shrimp production.Fishing GearThese traps, designed to catch fish or crustaceans, are in the form of cages or baskets made with various materials (wood, wicker, metal rods, wire netting, etc.) and have one or more openings or entrances. They are usually set on the bottom, with or without bait, singly or in rows, connected by ropes (buoy-lines) to buoys showing their position on the surface. Traps and Pots are not used on their own. In penaeid fisheries they are usually used in combination with lattice screens to form traps. The last fifteen years, pots have been put into operation in Pacific and Indian ocean for catching deep (several hundreds meters) shrimp species on muddy bottom. These pots are not very large and the catch is, in general, a few individuals per pot per day; however this activity is profitable when the value of the shrimp is high.Vessel Overview Trap setters, fishing for shrimp, range from open boats operating inshore up to larger decked vessels up to almost 20 m.Handling ModeThe shrimp landed from traps are alive and larger than that landed from other gear types, resulting in superior quality. .Fishery Production SystemsShrimp pot fishing is a fishing technique used by artisanal and semi industrial fisheries.Fishing EnvironmentGenerally speaking, pots are fishing gear for marine waters, especially depth open sea waters usually on soft, muddy bottom. Artisanal fishermen set pots in shallow coastal waters.Fishing OperationsPandalus borealis is commercially harvested on the northeast coast of the United States and Nova Scotia using a rectangular wire mesh trap with an entrance on the top. These fisheries are generally pursued by 30' - 40' vessels, utilizing between 100 and 200 pots. Landings generally fluctuate between 8 and 10 pounds per pot, and salted herring has proven to be the best bait. The shrimp landed from traps are alive and larger than that landed from other gear types, resulting in superior quality. Other advantages include lower gear-up costs, lower power requirements, less bottom disturbance caused by fishing operations, and minimal by-catch which can be released alive. Fishery AreaShrimp pot fishing operate in northeast coast of the United States and Nova Scotia as well as in all tropical regions.SeasonalityPot fishing season may change zone by zone according to the target species and its migration patterns. In deeper water the fishing can usually carried out all year.IssuesEnvironmental The size of the mesh (diamond plastic or square wire) or the distance between the slats are making, to a certain extent, a selection letting the smallest individual to escape; in addition, in more and more fisheries, a regulation imposes that an "escape panel" is included on one side of the pot. When a pot is lost, it may continue to fish for some time; this is known as "Ghost fishing"; it will be limited if, at least a part of the pot is made from biodegradable material.|