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The backcross is the result of an F1 splake male being crossed with a female lake trout (i.e., 75% lake trout and 25% brook trout). Although splake were first described in 1880, Ontario began experimenting with the hybrids in the 1960s in an effort to replace collapsed lake trout stocks in the Great Lakes .
Lake trout are known to hybridize in nature with the brook trout; such hybrids, known as "splake", are normally sterile but self-sustaining populations exist in some lakes. [12] Splake are also artificially propagated in hatcheries, and then stocked into lakes in an effort to provide sport-fishing opportunities. [13]
Tiger trout (top three), splake (bottom) The brook trout produces hybrids both with its congeners the lake trout (S. namaycush) and the Arctic char (S. alpinus), and intergeneric hybrids with the brown trout (Salmo trutta). [22] The splake is an intrageneric hybrid between the brook trout and lake trout (S. namaycush).
The diet of Splake is the same as a brook trout eating plankton, insects, crayfish and small fish. They grow up to 20 inches and more quickly than their parent species. Splakes are able to live as long as 20 years. The second generation of Splake offspring have a harder time living and higher mortality rates. [103] NE
The Bellvue-Watson Fish Hatchery is a Colorado Parks and Wildlife cold water fish production facility located near Cache la Poudre River and Watson Lake State Wildlife Area in Larimer County, Colorado. Hatchery staff works to support the raising of approximately 1.5 million sub-catchable trout annually.
Trout survival for winter is very poor with only the splake and brook trout overwintering. There is also a dense population of Utah chub. The lake was formed by a lava flow across the eastern end of the valley. [2] The lake drains into both the Great Basin and the Colorado River drainage systems through sinkholes in the lake floor.
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The Dolly Varden trout (Salvelinus malma) is a species of salmonid ray-finned fish native to cold-water tributaries of the Pacific Ocean in Asia and North America.Despite the name "trout" (which typically refers to freshwater species from the genera Salmo and Oncorhynchus), it belongs to the genus Salvelinus (chars), which includes 51 recognized species, the most prominent being the brook ...