云南澜沧江下游3种条鳅科鱼类中国新记录  

Three New Records of Fish Species(Nemacheilidae)in the Lower Lancang River,Yunnan Province

作　　者：林峰 张妍[4] 付贵权 陈小勇 LIN Feng;ZHANG Yan;FU Gui-Quan;CHEN Xiao-Yong(Kunming Institute of Zoology,Chinese Academy of Sciences,Kunming 650223,China;Southeast Asia Biodiversity Research Institute,Chinese Academy of Sciences,Nay Pyi Taw 05282,Myanmar;University of Chinese Academy of Sciences,Beijing 100049;Yunnan Normal University,Kunming 650500;Yunnan Institute of Fishery Sciences Research,Kunming 650111,China)

机构地区：[1]中国科学院昆明动物研究所,昆明650223 [2]中国科学院东南亚多样性研究中心,内比都缅甸05282 [3]中国科学院大学,北京100049 [4]云南师范大学,昆明650500 [5]云南省渔业科学研究院,昆明650111

出　　处：《动物学杂志》2021年第6期871-881,共11页Chinese Journal of Zoology

基　　金：国家自然科学基金项目(No.31872202);生态环境部生物多样性调查、观测和评估项目(2019-2023年),科技部澜沧江-湄公河合作专项基金(澜沧江-湄公河流域生物多样性监测与网络建设项目,2018-2020年);中国科学院东南亚生物多样性研究中心资助项目(No.Y4ZK111B01)。

摘　　要：澜沧江-湄公河作为一条国际河流,是全世界鱼类物种多样性最高的流域之一,其中中国境内澜沧江流域的条鳅科鱼类共记录37种,由于该类群分类鉴定较为困难,流域内仍存在未被发现、描述或准确鉴定的物种。2015至2019年,通过对云南省普洱市和西双版纳傣族自治州境内的澜沧江流域进行多次鱼类生物多样性调查,共发现3种未曾记录的条鳅科鱼类。对所采集到鱼类标本的重要性状进行测量,并与国内外相关文献进行形态特征比较,分别鉴定为长带条鳅(Nemacheilus longistriatus)、裸背南鳅(Schistura nudidorsum)和宽齿南鳅(S.latidens),均为中国物种新记录;其中,由于以前在中国记录的条鳅属鱼类均已移入南鳅属(Schistura),长带条鳅是目前中国分布的唯一条鳅属物种。本文对这3种新记录的条鳅科鱼类进行描述,对今后澜沧江条鳅科鱼类物种鉴定具有一定的指导意义,同时为澜沧江鱼类资源的调查和保护提供科学依据。The Lancang-Mekong River is an international river,and is one of the richest areas of fish biodiversity in the world.There is a total of 37 Nemacheilid species in the Lancang River basin in China.Due to the difficulty in classification and identification of Nemacheilidae,there are still some species that have not been discovered,described or accurately identified in the Lancang River basin.Many surveys of fish diversity were conducted during 2015 to 2019 in the Lancang Jiang basin in both Puer and Xishuangbanna prefecture,Yunnan Province.Among collected fish species,there are three nemacheilid fish species which never been recorded from China before;The important character of the collected fish specimens were measured(Table 1),and the morphological characters were compared with relevant literatures.They were identified as Nemacheilus longistriatus,Schistura nudidorsum and S.latidens,respectively.Nemacheilus longistriatus is the only loach species of Nemacheilus distributed in China,and is herein described from main stream of Langcang River in Menghan Town(Fig.1).It is distinguished from its congeners in Southeast Asia by its colour pattern consisting of an obvious bold black midlateral stripe and 9﹣12 dark saddles along back(Fig.2).S.nudidorsum is described from Nan’a River in Jinghong City and Nanju River,a tributary of Nanlan River in Menghai County(Fig.3),and is distinguished by scales present in the predorsal area,8﹣11 faint dark bars on flank,narrower than or equal to interspaces,in the predorsal area usually wider at its upper extremity and usually not meeting its homologues on the dorsal midline,and lateral line completed(Fig.4).S.latidens was collected from the main stream of Weiyuan River in Fengshan Town(Fig.5),and it differs from any other species of genus Schistura in having a broad,short,often exposed processus dentiformis on the upper jaw,mouth width approximately equal to 2/3 of the head width,7﹣10 relatively regular dark black stripes on body,and a complete basial caudal bar(Fig.6).In this

关 键 词：云南 澜沧江 条鳅科 新记录 

分 类 号：Q959[生物学—动物学]