Resurvey After 20 Years:Updating the Distribution,Population,and Potential Threats of the Chinting Alpine Toad  

作　　者：Yuezheng FAN Qingfeng CHEN Yuwen CHENG Kaicheng TANG Ling SUN Yonghao HUANG Lan ZHAO Dong LIANG Xiaoyi WANG Junhua HU 

机构地区：[1]Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu 610041,Sichuan,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]The State-owned Forest Farm of Hongya County,Meishan 620360,Sichuan,China [4]Sichuan Mt.Emei Forest Ecosystem National Observation and Research Station,Leshan 614201,Sichuan,China

出　　处：《Asian Herpetological Research》2024年第2期73-81,共9页亚洲两栖爬行动物研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(32271737,32071544);the Interdisciplinary Innovation Team of the Chinese Academy of Sciences(CAS)“Light of West China”Program(xbzg-zdsys-202207);the Shenzhen Zhilan Foundation(2021070451A);Nature Science Foundation of Sichuan Province(2022NSFSC0125).

摘　　要：Considering the increased anthropogenic impacts,species with a limited range and low detectability often lack fundamental information and conservation actions,placing them at a high risk of endangerment.The Chinting alpine toad Scutiger chintingensis is a rare mountain amphibian endemic to the eastern margin of the Qinghai-Xizang Plateau in China.Within its whole distribution range,only three known populations(Wolong,Emei,and Wawu)exist and no recent population status report has been documented for this species over the past two decades.From 2020 to 2023,we investigated the species distribution,and assessed the risk factors for the main populations.We recorded this species in all distribution areas,and updated a new distribution site with a lower elevation limit.The relative population density was 0.024±0.012 ind./m^(2)on Mount Emei,whereas only 0.008±0.017 ind./m^(2)on Mount Wawu.No significant difference was observed in the number of individuals between the two populations;however,the relative population density was significantly different.Sewage and waste discharge resulting from the construction of scenic areas,as well as disturbances from tourism,were the primary anthropogenic factors that influenced the survival of this species.Our results provide the updated information on the distribution and population status of the Chinting alpine toad,and suggest that unrecorded populations,as well as a wider elevation range,may exist for this species.Our findings emphasise the importance of timely updates of species distribution and population information and offer a basis for the future conservation of endangered amphibians.

关 键 词：DISTRIBUTION endemic amphibian population size Scutiger chintingensis threat factor 

分 类 号：Q958[生物学—动物学]