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Pacific giant salamander : ウィキペディア英語版 | Pacific giant salamander
Pacific giant salamanders (Dicamptodontidae) are a family of large salamanders. The family includes only a single genus, ''Dicamptodon''. The genus was formerly thought to contain two species, Cope's giant salamander (''D. copei'') on the Olympic Peninsula, Washington, and the Pacific giant salamander (''D. ensatus'') which consisted of three geographic populations, an Idaho isolate, a group in northern California, and a group in Oregon and Washington. In 1989, genetic studies showed ''D. copei'' to be a distinct subspecies, and the ''D. ensatus'' populations to consist of three subspecies: the Idaho giant salamander (''D. aterrimus'') in Idaho, and two highly divergent species with a narrow hybrid zone in California, the coastal giant salamander (''D. tenebrosus'') (ranging from northern California to Washington), and the California giant salamander (''D. ensatus'') (limited only from Santa Cruz County to Mendocino County in California). Specimens are up to long, and are found in the western USA and southwestern British Columbia. Except for their size, they are similar to the mole salamander family (Ambystomatidae), in which they were originally included.〔Frost, Darrel R., Grant, Taran, Faivovich, Julián, Bain, Raoul H, Haas, Alexander, Haddad, Celio F. B, De Sa, Rafael O, Channing, A, Wilkinson, Mark, Donnellan, Stephen C, Raxworthy, Christopher J., Campbell, Jonathan A., Blotto, Boris L., Moler, Paul., Drewes, Robert C., Nussbaum, Ronald A., Lynch, John D., Green, David M., Wheeler, Ward C. 2006. ''The amphibian tree of life''. Bulletin of the AMNH; no. 297 (http://digitallibrary.amnh.org/dspace/bitstream/2246/5781/1/B297.pdf)〕 While most salamanders are silent, the Pacific giant salamander is one of several salamanders that have vocal abilities. When startled, these salamanders may respond with a croaky-sounding cry similar to that of a barking dog. Members of this family can either be terrestrial or aquatic as adults. ==References==
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