| karyotypes of three rat species (mammalia: rodentia: muridae) from hainan island, china, and the valid specific status of niviventer lotipes. | the karyotypes of three rat species from hainan island, china, were examined. niviventer fulvescens (gray, 1847) had 2n=46 and fn=64, similar to the karyotypes reported for n. fulvescens from southeast asia, while niviventer lotipes () had 2n=52 and fn=66, which is distinct from the known karyotypes of other niviventer species. niviventer lotipes was recently considered conspecific with n. tenaster (), but the two were found to have extremely different karyotypes (2n=52 and fn=66 in n. lotipes; ... | 2008 | 18624578 |