Species: Rana luteiventris
Columbia Spotted Frog
Species
Encyclopedia of Puget Sound
Classification
Kingdom
Animalia
Phylum
Craniata
Class
Amphibia
Order
Anura
Family
Ranidae
Genus
Rana
NatureServe
Classification
Other Global Common Names
grenouille maculée de Columbia
Informal Taxonomy
Animals, Vertebrates - Amphibians - Frogs and Toads
Formal Taxonomy
Animalia - Craniata - Amphibia - Anura - Ranidae - Rana - Spotted frogs on Mitkof Island near Petersburg, Alaska, may exhibit a distinct phenotype of heavy dusky gray ventral coloring (MacDonald 2003).
Ecology and Life History
Short General Description
A medium-sized frog.
Migration
true - true - false - Though movements of up to 6.5 km have been recorded, these frogs generally stay in wetlands and along streams within 1 km of their breeding pond (Turner 1960, Hollenbeck 1974, Bull and Hayes 2001, Pilliod et al. 2002). Frogs in isolated ponds may not leave those sites (Bull and Hayes 2001).
Non-migrant
true
Locally Migrant
true
Food Comments
Opportunistic. Eats a wide variety of insects as well as different mollusks, crustaceans, and arachnids. Larvae eat algae, organic debris, plant tissue, and minute organisns in water.
Reproduction Comments
Breeds in February at sea level in British Columbia, mid-March at 1395 m in Utah, May-June at 2377 m in Wyoming; generally as early as winter thaw permits. In northeastern Oregon, eggs were not deposited on days when maximum water temperature was below 9.4 C; at 18 sites, duration of egg deposition ranged from 1 to 20 days (Bull and Shepherd 2003). Females may lay egg masses in communal clusters. Eggs hatch in 3-21 days (12-21 days in northeastern Oregon, Bull and Shepherd 2003), depending on temperature. Metamorphosis occurs by fall or tadpoles may overwinter and metamorphose the following spring. Sexually mature in 2-6 years, depending on location and elevation (matures at greater age at high elevations). In Wyoming, individual females breed yearly at low elevations, every 2-3 years at high elevations (Nussbaum et al. 1983).
Ecology Comments
In the Toiyabe Range in Nevada, Reaser (2000) captured 887 individuals over three years, with average mid-season density ranging from 2 to 24 frogs per 150 m of habitat.
Length
10
Conservation Status
NatureServe Global Status Rank
G4
Global Status Last Reviewed
2008-01-09
Global Status Last Changed
2001-11-21
Distribution
Conservation Status Map
<img src="http://www.natureserve.org/explorer/servlet/GetMapGif?CA.AB=S3&CA.BC=S4&CA.YT=S2&US.AK=S2&US.ID=S3&US.MT=S4&US.NV=S2&US.OR=S2&US.UT=S1&US.WA=S4&US.WY=S3" alt="Conservation Status Map" style="width: 475px; height: auto;" />
Global Range
G - 200,000-2,500,000 square km (about 80,000-1,000,000 square miles) - G - Extreme southeastern Alaska, southwestern Yukon (Slough 2002), northern British Columbia, and western Alberta south through Washington east of the Cascades, eastern Oregon, Idaho, and western Montana to Nevada (disjunct, Mary's, Reese, and Owyhee river systems), southwestern Idaho (disjunct), Utah (disjunct, Wasatch Mountains and west desert), and western and north-central (disjunct) Wyoming (Green et al. 1996, 1997; Stebbins 2003). Disjunct populations occur on isolated mountains and in arid-land springs. Elevational range extends from near sea level to about 3,048 meters (10,000 feet) (Stebbins 2003).<br><br>The Wasatch Front population (<i>R. luteiventris</i> pop. 1) occurs in isolated springs or riparian wetlands in Juab, Sanpete, Summit, Utah, Tooele, and Wasatch counties; extirpated from the Salt Lake Valley and tributaries to the Jordan River and Great Salt Lake (USFWS 2002). Currently, there are seven localized populations that comprise the Wasatch Front population or DPS. The largest known concentration is currently in the Heber Valley; the remaining six locations are Jordanelle/Francis, Springville Hatchery, Holladay Springs, Mona Springs Complex/Burraston Ponds, Fairview, and Vernon (USFWS 2002).<br><br>The West Desert (Bonneville) population (<i>R. luteiventris</i> pop. 2) occurs in eastern Nevada and western Utah, mainly in two large spring complexes, with several additional concentrations in smaller nearby springs; it is extiprated from the northern portions of the historical range.<br><br>The Great Basin population (<i>R. luteiventris</i> pop. 3) occurs in southwestern Idaho, southeastern Oregon, and Nevada; it includes all Nevada populations of <i>R. luteiventris</i> except a small population on the eastern border of White Pine County, which is included in the West Desert population.
Global Range Code
G
Global Range Description
200,000-2,500,000 square km (about 80,000-1,000,000 square miles)