Lake trout
Salvelinus namaycush
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Salmoniformes Family: Salmonidae Genus: Salvelinus Species: S. namaycush
Binomial name
Salvelinus namaycush (Walbaum, 1792)

Lake trout (Salvelinus namaycush) is a freshwater char living mainly in lakes in northern North America. Other names for it include mackinaw, lake char (or charr), touladi, togue, and grey trout. In Lake Superior, they can also be variously known as siscowet, paperbellies and leans. Lake trout are prized both as game fish and as food fish. Lake Trout is a jam band based in Baltimore. ... For other uses, see Scientific classification (disambiguation). ... For other uses, see Animal (disambiguation). ... Typical Classes Subphylum Urochordata - Tunicates Ascidiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with... Orders See text The Actinopterygii are the ray-finned fish. ... Genera (see text) Salmonidae is a family of ray-finned fish, the only family of order Salmoniformes. ... Genera (see text) Salmonidae is a family of ray-finned fish, the only family of order Salmoniformes. ... Species (see text) Salvelinus is a genus of Salmonid fish, referring to charizard or charr. ... This article does not cite any references or sources. ... Johann Julius Walbaum Johann Julius Walbaum (1724 – 1799), a native of Lübeck, Germany was a physician, naturalist and taxonomist. ... 1792 was a leap year starting on Sunday (see link for calendar). ... Species (see text) Salvelinus is a genus of Salmonid fish, referring to charizard or charr. ... For other uses, see Lake (disambiguation). ... North American redirects here. ... For the the Quebec municipality, see Lac-Supérieur. ... A Game fish is a fish that is pursued for sport, regardless of whether the fisherman ultimately eats the fish. ... Spaghetti with seafood (Spaghetti allo scoglio). ...

Lake trout are the largest of the trouts, the record weighing almost 46.3 kg (102 lb). They were fished commercially in the Great Lakes until lampreys, overharvest and pollution extirpated or severely reduced the stocks. Commercial fisheries still exist in some smaller lakes in northern Canada. For other uses, see Trout (disambiguation). ... Kg redirects here. ... Look up pound in Wiktionary, the free dictionary. ... Salmon for sale at a marketplace The Fishing industry is the commercial activity of fishing and producing fish and other seafood products. ... The Great Lakes from space The Laurentian Great Lakes are a group of five large lakes in North America on or near the Canada-United States border. ... Subfamilies Geotriinae Mordaciinae Petromyzontinae A lamprey is a type of fish with a toothed, funnel-like, jawless sucking mouth, with which most species bore into the flesh of other fishes to suck their blood. ... The Traffic Light colour convention, showing the concept of Harvest Control Rule (HCR), specifying when a rebuilding plan is mandatory in terms of precautionary and limit reference points for spawning biomass and fishing mortality rate. ... The Dodo, shown here in illustration, is an often-cited[1] example of extinction. ... 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. ...

Lake trout are dependent on cold, oxygen-rich waters. They are pelagic during the period of summer stratification in dimictic lakes, often living at depths of 20–60 m (60–200 ft). Scale diagram of the layers of the pelagic zone. ... Lake stratification is the separation of lakes into three layers: Epilimnion - top of the lake. ...

The lake trout is a slowly growing fish, typical of oligotrophic waters. It is also very late to mature. Populations are extremely susceptible to overexploitation. Many native lake trout populations have been severely damaged through the combined effects of hatchery stocking (planting) and overharvest. Oligotrophic refers to any environment that offers little to sustain life. ... A hatchery is a facility where eggs are hatched under artificial conditions, especially those of fish or poultry. ...

A lake trout being held in an angler's hands.

It is generally accepted that there are two basic types of lake trout populations. Some lakes do not have pelagic forage fish during the period of summer stratification. In these lakes, lake trout take on a life history known as planktivory. Lake trout in planktivorous populations are highly abundant, grow very slowly and mature at relatively small size. In those lakes that do contain deep water forage, lake trout become piscivorous. Piscivorous lake trout grow much more quickly, mature at a larger size and are less abundant. Notwithstanding differences in abundance, the density of biomass of lake trout is fairly consistent in similar lakes, regardless of whether the lake trout populations they contain are planktivorous or piscivorous. Image File history File links Download high resolution version (1050x701, 94 KB) Picture from here Picture information: Title: Lake Trout Alternative Title: Salvelinus namaycush Creator: U.S. Fish and Wildlife Service Source: SL-00082 Publisher: (none) Contributor: ASSISTANT REGIONAL DIRECTOR-EXTERNAL AFFAIRS Language: EN - ENGLISH Rights: (public domain) Audience: (general... Image File history File links Download high resolution version (1050x701, 94 KB) Picture from here Picture information: Title: Lake Trout Alternative Title: Salvelinus namaycush Creator: U.S. Fish and Wildlife Service Source: SL-00082 Publisher: (none) Contributor: ASSISTANT REGIONAL DIRECTOR-EXTERNAL AFFAIRS Language: EN - ENGLISH Rights: (public domain) Audience: (general... Scale diagram of the layers of the pelagic zone. ... For other uses, see Lake (disambiguation). ... Sexual maturity is the age/stage when an organism can reproduce. ... This page is a candidate to be moved to Wiktionary. ... For other uses, see Density (disambiguation). ... For the use of the term in ecology, see Biomass (ecology). ...

In Lake Superior, three distinct phenotypes of lake trout persist, commonly known as "siscowet", "paperbelly" and "lean". The distinct groups operate, to some level at least, under genetic control and are not mere environmental adaptations.^[1] Siscowet numbers, especially, have become greatly depressed over the years due to a combination of the extirpation of some of the fish's deep water coregonine prey and to overexploitation. Siscowet tend to grow extremely large and fat and attracted great commercial interest in the last century. Siscowet populations have rebounded since 1970, with one estimate putting the number in Lake Superior at 100 million.[1] For the the Quebec municipality, see Lac-Supérieur. ... Individuals in the mollusk species Donax variabilis show diverse coloration and patterning in their phenotypes. ... The freshwater whitefish are fish of the subfamily Coregoninae in the family Salmonidae which includes the freshwater and anadromous trout and salmon species. ...

From a zoogeographical perspective, lake trout are quite rare. They are native only to the northern parts of North America, principally Canada but also Alaska and, to some extent, the northeastern United States. Lake trout have been introduced into many other parts of the world, mainly into Europe but also into South America and certain parts of Asia. In Canada, approximately 25% of the world's lake trout lakes are found in the province of Ontario. Even at that, only 1% of Ontario's lakes contain lake trout. Zoogeography is the branch of the science of biogeography that is concerned with the geographic distribution of animal species. ... North American redirects here. ... For other uses, see Alaska (disambiguation). ... For other uses, see Europe (disambiguation). ... South America South America is a continent crossed by the equator, with most of its area in the Southern Hemisphere. ... For other uses, see Asia (disambiguation). ... Motto: Ut Incepit Fidelis Sic Permanet (Latin: Loyal she began, loyal she remains) Capital Toronto Largest city Toronto Official languages English (de facto) Government Lieutenant-Governor David C. Onley Premier Dalton McGuinty (Liberal) Federal representation in Canadian Parliament House seats 107 Senate seats 24 Confederation July 1, 1867 (1st) Area...

Lake trout have been known, very rarely, to hybridise in nature with the brook trout but such hybrids are almost invariably reproductively sterile. Hybrids are also artificially propagated in hatcheries and then planted into lakes in an effort to provide sport fishing opportunities. This article is about a biological term. ... This article is about the species of fish. ... Infertility primarily refers to the biological inability of a man or a woman to contribute to conception. ...

The specific epithet namaycush derives from an indigenous North American name for the species, most likely in one of the Algonquian languages (c.f. Ojibwe: namegos = "lake trout"; namegoshens = "rainbow trout"). For other uses, see Species (disambiguation). ... For other uses, see Native Americans (disambiguation). ... The Algonquian (also Algonkian) languages are a subfamily of Native American languages that includes most of the languages in the Algic language family (the two Algic languages that are not Algonquian are Wiyot and Yurok of northwestern California). ... The Anishinaabe language or the Ojibwe group of languages or Anishinaabemowin in Eastern Ojibwe syllabics) is the third most commonly spoken Native language in Canada (after Cree and Inuktitut), and the fourth most spoken in North America (behind Navajo, Cree, and Inuktitut). ...

References

• Salvelinus namaycush (TSN 162002). Integrated Taxonomic Information System. Retrieved on 30 January 2006.
• Moen, Sharon (December 2002). Siscowet Trout: A Plague of Riches. Minnesota Sea Grant. Retrieved on 20 December, 2007.

The Integrated Taxonomic Information System (ITIS) is a partnership designed to provide consistent and reliable information on the taxonomy of biological species. ... is the 30th day of the year in the Gregorian calendar. ... Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era in the 21st century. ...

See also

• Lake Trout (band), a rock/ambient/jamband from Baltimore, Maryland.

Lake Trout is a jam band based in Baltimore. ...

External links

• Fish-On! - Full Lake Trout Chapter at TheFishingNetwork.com

• Fishbase description of Lake trout