Incidental Catch

	Incidental Catch In fishing, incidental catch refers to the portion of the catch that was unintentionally caught but retained. It can be distinguished from discards, which are the unintended catch that is caught and then returned to the sea, and bycatch, which includes all non-targeted species caught alongside the targeted species. The operational definitions used by the FAO for incidental catch and other related catches are as follows:Alverson DL, MH Freeberg, SA Murawski and Pope JG (1994A global assessment of fisheries bycatch and discardsFAO Fisheries, Technical paper 339, Rome. . * Target catch: The catch of a species or species assemblage which is primarily sought in a fishery, such as shrimp, flounders, cods * Incidental catch: Retained catch of non-targeted species * Discarded catch (usually shortened to ''discards''): That portion of the catch returned to the sea as a result of economic, legal, or personal considerations. * Bycatch: Discarded catch plus incidental catch. Notes Refere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Discards Discards are the portion of a catch of fish which is not retained on board during commercial fishing operations and is returned, often dead or dying, to the sea. The practice of discarding is driven by economic and political factors; fish which are discarded are often unmarketable species, individuals which are below minimum landing sizes and catches of species which fishers are not allowed to land, for instance due to quota restrictions. Discards form part of the bycatch of a fishing operation, although bycatch includes marketable species caught unintentionally. Discards may also be caused by high grading, where marketable fish are discarded to make room for more valuable catches. Discarding can be highly variable in time and space as a consequence of changing economic, sociological, environmental and biological factors. Discarding patterns are influenced by catch compositions, which in turn are determined by environmental factors, such as recruitment of small fish into the fisher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Bycatch Bycatch (or by-catch), in the fishing industry, is a fish or other marine species that is caught unintentionally while fishing for specific species or sizes of wildlife. Bycatch is either the wrong species, the wrong sex, or is undersized or juveniles of the target species. The term "bycatch" is also sometimes used for untargeted catch in other forms of animal harvesting or collecting. Non- marine species ( freshwater fish not saltwater fish) that are caught (either intentionally or unintentionally) but regarded as generally "undesirable" are referred to as rough fish (mainly US) or coarse fish (mainly UK). In 1997, the Organisation for Economic Co-operation and Development (OECD) defined bycatch as "total fishing mortality, excluding that accounted directly by the retained catch of target species". Bycatch contributes to fishery decline and is a mechanism of overfishing for unintentional catch. The average annual bycatch rate of pinnipeds and cetaceans in the US from 1990 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Discards Discards are the portion of a catch of fish which is not retained on board during commercial fishing operations and is returned, often dead or dying, to the sea. The practice of discarding is driven by economic and political factors; fish which are discarded are often unmarketable species, individuals which are below minimum landing sizes and catches of species which fishers are not allowed to land, for instance due to quota restrictions. Discards form part of the bycatch of a fishing operation, although bycatch includes marketable species caught unintentionally. Discards may also be caused by high grading, where marketable fish are discarded to make room for more valuable catches. Discarding can be highly variable in time and space as a consequence of changing economic, sociological, environmental and biological factors. Discarding patterns are influenced by catch compositions, which in turn are determined by environmental factors, such as recruitment of small fish into the fisher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]