Pelagic fish Atlantic Ocean
Illustration: Jón Baldur Hlíðberg
|Atlantic mackerel fishing grounds in 2011 (t/nm2), all gear combined, dark areas indicate highest catches.
Atlantic mackerel catch (t) in Icelandic waters
Source: ICES, Statistics Iceland
Northeast Atlantic mackerel spawning stock biomass (thous. t) and average fishing mortality (ages 4-8)
Source: ICES, The Marine Research Institute
Value of exported Atlantic mackerel products by main countries in 2008 (FOB million ISK)
Icelandic summer spawning herring catch (t) by type of processing
Scientific: Scomber scombrus. English: Atlantic mackerel. Icelandic: Makríll. For more languages see the Marine Animal Dictionary.
Biology and distribution
The mackerel is a streamlined and fast swimming fish known from extensive migrations. It grows rapidly and is usually around 15 cm in the first autumn after spawning (in spring). It reaches sexual maturity at the age of 2 to 3, then around 30 cm long. Common size for adults is from 35 cm to 45 cm, but it can reach 60 cm in length. The mackerel feeds on a variety of pelagic animals, mostly crustaceans and fish juveniles.
The Atlantic mackerel occurs from the northeast coast of USA, up to Newfoundland Island. On the eastern side it is found off Morocco, in the Mediterranean sea and all the way up to the Barents Sea, although only occasionally. Three stocks are recognized in the north east Atlantic. The southern stock spawns in Spanish and Portuguese waters, the western stock spawns in the Bay of Biscay and around Ireland and the third stock spawns in the North Sea.
The mackerel has not previously been known to spawn in Icelandic waters but migrates there occasionally and can then be found all around the country. It seems clear from archives that this happens regularly as large amount of mackerel were reported for many years in a row around 1900, and during the warm period from 1926 to 1945 and sporadically in between and after. It is also clear that it is now mass migrating into the Icelandic EEZ due to the current warm oceanic conditions.
Catch, fishing methods and processing
Some catch has been reported in Icelandic waters in the past, probably bycatch in herring fisheries. Icelandic boats also fished for mackerel in the North Sea from 1967 to 1976. For about 20 years after that, Icelandic boats did not report any catches until after 2006. Since that catches have increased significantly.
The mackerel is a valuable pelagic fish and most of the catch is for human consumption. The mackerel is fished with midwater trawl or purse seines, iced or frozen at sea and then processed after landing. The fillets are canned, smoked or sold fresh.
The extended Kalman filter approach to VPA (C.M. 1983 / D:17. Statistics Committee; ref. Demersal, Pelagic and Baltic Fish Committees)
Book (International Council for the Exploration of the Sea)
Fish Stocks/ Windpower/ Wave Generators2006-11-14 00:23:43 by jaybug39
I have read that ocean fish stocks will be gone in a few years. And I have been thinking since I heard that Massachusetts refused to build wind turbines in Long Island Sound as they were unattractive, why not build some in the pacific where we could create national sea life refuges?
This would help out coastal communities in several regards. Some people would come see the turbines, much like some people visit lighthouses. The energy produced would ease any difficulties coastal communities may face from their currently existing long distance power transmissions. And they would get the benefit of knowing that fish will be around in the future
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Dutch investigations on the distribution of pelagic O-group gadoids in the North Sea in 1973 (C.M)
Book (International Council for the Exploration of the Sea, Demersal Fish (Northern) Committee)