Sockeye Salmon


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sockeye salmon

[‚säk‚ī ′sam·ən]
(vertebrate zoology)
The species Oncorhynchus nerka, which is generally smaller and is uniquely adapted to rearing in interior lakes rather than streams or rivers. Also known as red salmon.

Sockeye Salmon

 

(Oncorhynchus nerka), also red salmon or blueback salmon, a migratory or freshwater fish of the genus of Pacific salmon. It is characterized by numerous gill rakers (28–40) and its bright red coloration during reproduction. The sockeye salmon is 55–60 cm long and weighs 2.2–3 kg. It enters the rivers of Kamchatka from May through late July. It spawns from late summer until midwinter near sources of groundwater, most often in lakes and near springs. The sockeye salmon buries its roe in gravelly bottoms. The fry live in lakes a year or longer and feed predominantly on plankton. In the sea, sockeye salmon feed on invertebrates and small fish. The flesh and roe are valuable.

References in periodicals archive ?
River Otters have been observed preying on adult Sockeye Salmon (Oncorhynchus nerka) in Lake Ozette and the Ozette River (Haggerty and others 2009a), which is a cause for concern because Lake Ozette Sockeye Salmon are a unique evolutionary significant unit of Sockeye Salmon and are listed as Threatened under the US Endangered Species Act (ESA) due to low and declining population numbers (64 FR 14528, 25 March 1999).
They have reported declines in salmon spawning in the headwaters and the possible extirpation of one type of sockeye salmon that spawns in Tanada Lake and attribute these changes to increased noise, water pollution, and other changes in spawning areas caused by human activities.
Specifically, rates of mortality of juvenile sockeye salmon infested with gill lice increased in relatively warm (23[degrees]C) water.
Record sockeye salmon runs in the Skagit-Baker river system over the past few years are poised to grow even larger with the completion of another key fish-migration facility by Puget Sound Energy.
Summary: TEHRAN (FNA)- When migrating, sockeye salmon typically swim up to 4,000 miles into the ocean and then, years later, navigate back to the upstream reaches of the rivers in which they were born to spawn their young.
In the study, scientists examined 56 years of fisheries data documenting the return of sockeye salmon to the Fraser River in British Columbia - and the route they chose around Vancouver Island showed a correlation with changes in the intensity of the geomagnetic field.
In addition, there are clear linkages between ex-vessel prices for sockeye salmon from Alaska and the supply of Chilean pen-reared coho and steelhead shipped into Japanese markets.
Meanwhile, Waitrose said sales of sockeye salmon nearly trebled, and yellowfin tuna was up nearly a half, while tomatoes, salads and ice cream were popular.
About 75% of Sockeye Salmon supply, which is very familiar with the Japanese consumer, is supplied from Alaska.
From issues of what kinds of fish are more sustainable to what makes a 'flake', and recipes such as Grilled Sockeye Salmon with Fennel Two Ways, this is an outstanding pick for any seafood cook's collection and for any general lending library where seafood is of interest.
A cleanup effort, one of the largest in the nation's history, has restored inland sockeye salmon to Coeur d'Alene River stretches that, for decades, were devoid of life because of heavy metals, according to the Idaho Department of Environmental Quality.
The miraculous sockeye salmon run in western Canada's Fraser River watershed in the summer and fall of 2010--indeed the biggest run in 97 years--still has fishers, researchers and fishery managers baffled.