| phylogeography and conservation genetics of the columbia spotted frog (rana luteiventris; amphibia, ranidae). | the columbia spotted frog (rana luteiventris) has a widespread distribution in western canada and the western us, although the southern reach of its range is highly fragmented into several isolated populations. threats from various factors have raised concerns regarding the long-term survival of many small, isolated populations. here, we report a study designed to determine the phylogeographic and conservation genetic parameters of r. luteiventris in the western us. mitochondrial dna (mtdna) seq ... | 2001 | 11412371 |