Rough-skinned Newt - Taricha granulosa
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Population Establishment Uncertain
Western Hemisphere Range
Only documented with a specimen collected near Thompson Falls in Mineral County collected in June of 1950 and an unverified observation record from the same area in 1979 (Maxell et al. 2003).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
Most common in mesophytic forests of conifers or hardwoods, although they also occur in open valleys/farmland. In lakes, concentrate in warmer shallows early then move deeper as temperature increases. Concentrate at tangled vegetation, tree roots.
Percent by weight data from southern BC; amphipods, 35; terrestrial insects, 20; tricoptera larvae, 19; anuran larvae, 1. Varies with prey availability. Concentrated feeding when anurans hatch.
Move mostly during rainfall at temps above 5 C. Reached densities of 300/ha (up to 2700/ha near edges) in a southwestern BC lake.
In southwestern BC eggs laid June to early July; metamorphose occurs in August, and they may overwinter at high elevations with metamorphosis then in June to July. Live 4 to 5 years mostly terrestrially before sexually mature.
- Literature Cited AboveLegend: View Online Publication
- Maxell, B.A., J.K. Werner, P. Hendricks, and D.L. Flath. 2003. Herpetology in Montana: a history, status summary, checklists, dichotomous keys, accounts for native, potentially native, and exotic species, and indexed bibliography. Society for Northwestern Vertebrate Biology, Northwest Fauna Number 5. Olympia, WA. 135 p.
- Additional ReferencesLegend: View Online Publication
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- Black, J.H. and R. Timken. 1976. Endangered and threatened amphibians and reptiles in Montana. p 36–37. In R.E. Ashton, Jr. (chair). Endangered and threatened amphibians and reptiles in the United States. Society for the Study of Amphibians and Reptiles Herpetological Circular 5: 1-65.
- Boundy, J. 2001. Herpetofaunal surveys in the Clark Fork Valley region, Montana. Herpetological Natural History 8: 15-26.
- Brunson, R.B. 1955. Check list of the amphibians and reptiles of Montana. Proceedings of the Montana Academy of Sciences 15: 27-29.
- Nussbaum, R.A. and E.D. Brodie, Jr. 1971. The taxonomic status of the rough-skinned newt, Taricha granulosa (Skilton) in the Rocky Mountains. Herpetologica 27(3): 260-270.
- Nussbaum, R.A. and E.D. Brodie, Jr. 1981. Taricha granulosa. Catalogue of American Amphibians and Reptiles 272.1-272.4.
- Riemer, W.J. 1958. Variation and systematic relationships within the salamander genus Taricha. University of California Publications in Zoology 56(3): 301-390.
- Additional Sources of Information Related to "Amphibians"