Mammals of Korea: a review of their taxonomy, distribution and conservation status Author Jo, Yeong-Seok Author Baccus, John T. Author Koprowski, John L. text Zootaxa 2018 2018-11-19 4522 1 1 216 journal article 27944 10.11646/zootaxa.4522.1.1 58e0c7c5-75ec-4b1b-beb0-d01527f710f9 1175-5326 2610198 C24EFA8A-A5A0-4B06-A0A9-632F542B9529 Grampus griseus ( G. Cuvier, 1812 ) —Risso’s Dolphin, gray grampus Delphinus griseus G. Cuvier, 1812 p .14 ; Type locality- Finistère , France . Grampus sakamata Gray, 1846 p.31 ; Type locality- Japan . G. stearnsii Dall, 1873 p.13 ; Type locality- coast of California , US . G. griseous : Kuroda, 1938 p.18 ; Kim et al ., 2000 p.92 , 2004 p.241 . Range: The distribution of the species encompasses Korea , with most observations recorded in the East Sea, where continental shelves below a depth of 200 m provide breeding sites along the central coast from Gangneung to Sokcho ( Cetacean Research Institute 2007 ; Fig. 92 ). Remarks: Risso’s dolphin has a worldwide distribution, but little information exists about the genetic structure among local, coastal populations. Genetic data indicate low diversity between inshore and offshore populations with microsatellite DNA markers (F ST = 0.0296) and mtDNA sequences (F ST = 0.260). Gaspari et al . (2007) estimated low allelic diversity for nearly all loci among all populations. So far, Risso’s dolphin has been considered a monotypic species.