西藏自治区三种小型兽类新纪录OA北大核心CSTPCD

A series of specimens of small mammals were collected in Nyingchi and Shigatse regions from Himalayas,Xi-zang,China during the second comprehensive scientific expedition to the Qinghai-Xizang Plateau and the biological re-sources survey in key areas of Xizang by researchers from Kunming Institute of Zoology,Chinese Academy of Sciences.The specimens were subsequently identified as Sorex cansulus,Alexandromys limnophilus and Leopoldamys neilli by morphological and genetic analyses,which represented as new mammal records in Xizang.The population of Sorex can-sulus in Xizang are similar to the Yunnan population in morphological characteristics,and maximum likehood phyloge-netic analyses support the two populations are monophyletic(BS=100)and the K2P genetic distance of Cyt b gene is 0.5％-0.6％.The Xizang population of Alexandromys limnophilus are similar to the Sichuan population in morphologi-cal characteristics,and the two populations are monophyletic(BS=100)and the K2P genetic distance is 1.0％-1.4％.While Leopoldamys neilli in Xizang is somewhat different from the Yunnan and Thailand population,Molecular analyses supported the three populations are monophyletic(BS=81)and the K2P genetic distance is 5.7％-6.3％.This study extend the distribution range of those species.