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Fish Stock

Nutritional Information

1 cup, fish stock

  • Calories 40
  • Calories from Fat 17.01
  • Amount%DV
  • Total Fat 1.89g3%
  • Saturated Fat 0.473g2%
  • Monounsaturated Fat 0.55g
  • Polyunsaturated Fat 0.322g
  • Cholestreol 2mg1%
  • Sodium 363mg15%
  • Potassium 336mg10%
  • Total Carbohydrate 0g0%
  • Dietary Fiber 0g0%
  • Sugars 0g
  • Protein 5.27g11%
  • Calcium 1mg0%
  • Iron 0mg0%
  • Vitamin A 0%
  • Vitamin C 0%

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Fish Stock on Wikipedia:

Not to be confused with stockfish. For the flavoured liquid, see stock (food)

Fish stocks are subpopulations of a particular species of fish, for which intrinsic parameters (growth, recruitment, mortality and fishing mortality) are the only significant factors in determining population dynamics, while extrinsic factors (immigration and emigration) are considered to be insignificant.

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The stock concept

All species have geographic limits to their distribution, which are determined by their tolerance to environmental conditions, and their ability to compete successfully with other species. In marine environments this may be less evident than on land because there are fewer topographical boundaries, however, discontinuities still exist, produced for example by mesoscale and sub-mesoscale circulations that minimize long-distance dispersal of fish larvae .

For fishes, it is rare for an individual to reproduce randomly with all other individuals of that species within its biological range. There is a tendency to form a structured series of discrete populations which have a degree of reproductive isolation from each other in space, in time, or in both. This isolation is reflected in the development between sub-populations of genetic differences, morphological variations and exposure to different chemical regimes and parasitic species. Sub-populations also respond to fishing in such a way that fishing on one population appears to have no effect on the population dynamics of a neighbouring population.

The currently accepted definition of a stock in fisheries science, is that of Begg et al. (1999), “…[a “stock”] describes characteristics of semi-discrete groups of fish with some definable attributes which are of interest to fishery managers.”.

Stock identification is a field of fisheries science which aims to identify these subpopulations, based on a number of techniques.

Straddling stock

See also: Highly migratory species

The United Nations defines straddling stocks as ``stocks of fish such as pollock, which migrate between, or occur in both, the economic exclusion zone (EEZ) of one or more states and the high seas``.[1] Sovereign responsibility must be worked out in collaboration with neighbouring coastal states and fishing entities. Usually this is done through the medium of an intergovernmental regional organisation set up for the purpose of coordinating the management of that stock.

Straddling stocks are usually pelagic, rather than demersal. Demersal species move less than pelagic species, since they tend to relate to bottom topography. Pelagic species are more mobile, their movements influenced by ocean temperatures and the availability of zooplankton as food. Example pelagic fish are capelin, herring, whiting, mackerel and redfish, There are, however, a few demersal species that are straddling, such as the Greenland halibut migrates in feeding/spawning migrations to Greenland in the west and to the Faeroes in the east.[2]

Straddling stock can be compared with transboundary stock. Straddling stock range both within an EEZ as well as in the high seas. Transboundary stock range in the EEZs of at least two countries. A stock can be both transboundary and straddling.[3]

Notes

^ Straddling stocks ^ Pelagic and straddling stocks ^ FAO (2007) Report of the FAO workshop on vulnerable ecosystems and destructive fishing in deep sea fisheries Rome, Fisheries Report No. 829.

References

Begg GA, Friedland KD and Pearce JB (1999) ``Stock identification and its role in stock assessment and fisheries management: an overview.`` Fisheries Research, 43:1-8. Booke HE (1999) ``The stock concept revisited: perspectives on its history in fisheries.`` Fisheries Research, 43:9-11. Cadrin SX, Friedland KD and Waldman JR (2004) Stock Identification Methods : Applications in Fishery Science. ISBN 0-12-154351-X

See also

Lake Pohjalampi (in Finland) Overfishing

External links

Identification of stocks of horse macekerel, Trachurus trachurus Identification of stocks of herring, Clupea harengus FAO Fisheries Department and its SOFIA report addressing fish stocks v â€¢ d â€¢ e Wild fisheries Wild fisheries Ocean fisheries Â· Forage fisheries Â· Krill fisheries Â· Kelp fisheries Â· Eel fisheries Â· Shrimp fisheries Â· Crab fisheries Â· Cod fisheries Â· Ocean habitats Â· Shoaling and schooling Â· Migration Â· Sardine run Â· Fish ladder Â· Fish screen Â· Water column Â· Marine snow Â· Upwelling Â· Humboldt current Â· Algal blooms Â· Dead zones Â· Fish kill Fisheries science Population dynamics of fisheries Â· Shifting baseline Â· Fish stock Â· Fish mortality Â· Stock assessment Â· Fish measurement Â· Fish counter Â· Biomass Â· Fisheries acoustics Â· Acoustic tags Â· GIS and aquatic science Â· EcoSCOPE Â· Age class structure Â· Trophic cascades Â· Marine biology Â· Aquatic ecosystems Â· Diversity of fish Â· Bioeconomics Â· Ecopath Â· Fishbase Â· FMAP Â· Census of Marine Life Â· Fisheries databases Â· Institutes Â· Fisheries scientists Management Fisheries management Â· Monitoring control and surveillance Â· Vessel monitoring system Â· Fishery Resources Monitoring System Â· Catch reporting Â· Fisheries observer Â· Illegal, unreported and unregulated fishing Â· Fisheries organizations Quotas Individual fishing quota Â· Minimum landing size Â· Incidental mortality Â· Discards Â· Bycatch Â· Cetacean bycatch Â· Turtle excluder device Â· Shrimp-Turtle case Â· EU quotas Â· EU MLS Â· Exclusive Economic Zone Sustainability Sustainable fisheries Â· Overfishing Â· Marine pollution Â· Mercury in fish Â· Shark finning Â· Environmental effects of fishing Â· Fisheries and climate change Â· Destructive fishing practices Â· Maximum sustainable yield Â· Marine Protected Area Â· Marine reserve Â· Marine conservation Â· Marine conservation activism Â· Sustainable seafood Â· Marine Stewardship Council Â· Friend of the Sea Â· Seafood Watch Â· Oceana Â· Sea Around Us Project Â· WorldFish Center Â·