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Show " Salmo clarki pleuriticus Cope-- Colorado River cutthroat. This subspecies is now scarce or absent in Utah because of the deterioration of its habitat and of hybridization with the widely stocked rainbow trout and Yellowstone cutthroat trout. It was formerly abundant in cold tributaries of the Green River and the headwaters of Fremont River in Wayne County. It may still be holding out in Utah in western tributaries of the Green River. The same subspecies also persists in a few remote creeks and lakes of the upper Colorado River system in Wyoming and Colorado. " Salmo clarki utah Suckley- Utah cutthroat. This subspecies, described from Utah Lake originally occurred in the streams and lakes of the Bonneville Basin in Utah, Idaho, and Wyoming. It is now believed to be extinct, having been greatly depleted by overfishing, by adverse changes in the lakes and streams, and by contamination through hybridization with introduced rainbows and cutthroats. A sample of the pure form may possibly still persist in Snake Valley, Nevada, into which the Utah cutthroat trout was introduced about 1880 ( Miller and Alcorn, 19^- 6). " The former abundance of this trout in Utah Lake is . now difficult to visualize. In lQ6k one haul of a commercial net secured between 3,500 and 3? 700 pounds; by 1872, a catch of 500 pounds was considered good, and by 1889, a 100- pound haul was a good catch ( Cope and Yarrow, 1875, Jordan, 189( a). " Salmo clarki lewisi ( Girard)- Yellowstone cutthroat. This trout has probably largely, if not exclusively, replaced native stocks of cutthroat trout in Utah through hybridization following widespread and repeated stocking. Just when the first introduction was made is uncertain. In 1899? 11,000 adults and yearlings were sent to John H. Sharp, Fish and Game Warden, Salt Lake City. These trout came either from Leadville, Colorado, or Bozeman, Montana, or possibly from both stations. If so, several subspecies, including the Yellowstone cutthroat, may have been included ( Ravenel, 1900, P. CX). " The Yellowstone cutthroat occurs naturally in headwaters of the Missouri River, the upper Columbia River drainage, the upper Fraser River system of British Columbia, and the upper South Saskatchewan River system of Alberta, Canada. " Salmo gairdneri Richardson- rainbow trout. According to Popov and Low {. 1953), the first introduction of this species into Utah is believed to have taken place in 1883, when a shipment of eggs was received from McCloud River, California. The first specific stocking records are for 1896 when fry were planted in Ogden River, Big Cottonwood Creek near Salt Lake City and in a pond near Pleasant Grove, Utah County. By 1913? rainbow trout had been stocked in almost all of the favorable waters of Utah and the species is now widely established and regularly stocked by the Utah State Department of Fish and Game. The Kamloops rainbow trout was first stocked in Bear Lake in 1959 from Canada. 653 |
