Columbia Spotted Frogs (Rana Luteiventris) are found in only three locations in the Basin and Range region and all three locations are found in Nevada, the Toiyabe Mountains in central Nevada; the Ruby Mountains and Jarbidge-Independence Ranges near Elko Nevada; and Deep Creek in eastern Nevada, near the Utah boarder. Their full range however extends from Alaska south through British Columbia to Washington, Wyoming, Idaho, Utah and of course Nevada. See a map of their range here.
They tend to like clear, slow moving water, with little shade. They can be found in or near ponds, wetlands, lakes, and streams. They eat mostly insects, but will eat other amphibians as well as mollusks.
The Columbia spotted frogs that are found in the Basin and Range region have a light-colored stripe along their jaw and their back is brown to olive in coloration and they have a variety of black splotches throughout their bodies. Their skin varies from smooth to rough in texture--not "warty" like a toad though. The coloration of their bellies vary from white to yellow, and there is often mottling in that coloration. They are a thin looking frog. Adults tend to be between three and four inches in length and females tend to be larger than males.
Threats to these amphibians comes mostly from habitat destruction such as; water diversions, improper grazing management, spring development, and fragmentation from roads and culverts. Habitat disturbance often lead to invasive species and disease which are also common threats to these frogs. In 2003, a conservation agreement and strategy for Columbia spotted frogs was signed by the Bureau of Land Management, Nevada Department of Wildlife, the Nevada Natural Heritage Program, U.S. Fish and Wildlife Service, U.S. Forest Service, Nye County, and the University of Nevada Cooperative Extension, for both the northeast and central Nevada populations of the Columbia spotted frog.
Sources and to learn more:
Nevada department of Wildlife, Columbia Spotted Frog Brochure
http://www.ndow.org/uploadedFiles/ndoworg/Content/public_documents/Nevada_Wildlife/Columbia%20Spotted%20Frog%20-%20USFW%20Brochure.pdf accessed: 3-3-2015
USFWS Columbia Spotted Frog
http://www.fws.gov/nevada/protected_species/amphibians/species/col_spotted_frog.html accesses: 3-3-2015
USFWS Nevada Fish and Wildlife, Columbia Spotted Frog
http://www.fws.gov/nevada/protected_species/amphibians/species/col_spotted_frog.html accessed 3-3-2015
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