Native Range
The signal crayfish is native to North America west of the Rocky Mountains, including the Canadian province of British Columbia, and the U.S. states of Washington, Oregon, and Idaho. It was introduced to California in 1912 into the San Lorenzo River watershed and from there rapidly spread throughout the state. The only native crayfish remaining in California is the Shasta crayfish (Pacifastacus fortis), where efforts are being made to create a barrier to Signal crayfish invasion. Within North America, it has also been introduced to Nevada, and the populations in Utah may be the results of introductions. It is listed as a species of Least Concern on the IUCN Red List.
Read more about this topic: Signal Crayfish
Famous quotes containing the words native and/or range:
“The air of one’s native country is the most healthy air.”
—Anton Pavlovich Chekhov (1860–1904)
“During the cattle drives, Texas cowboy music came into national significance. Its practical purpose is well known—it was used primarily to keep the herds quiet at night, for often a ballad sung loudly and continuously enough might prevent a stampede. However, the cowboy also sang because he liked to sing.... In this music of the range and trail is “the grayness of the prairies, the mournful minor note of a Texas norther, and a rhythm that fits the gait of the cowboy’s pony.””
—Administration in the State of Texa, U.S. public relief program (1935-1943)