中国南部■属鱼类一新种(鲤形目,鲤科)  

A new species of genus Zacco from Southern China(Cypriniformes:Cyprinidae)

作　　者：张琰 周佳俊[3,4] 杨金权 ZHANG Yan;ZHOU Jiajun;YANG Jinquan(Shanghai Universities Key Laboratory of Marine Animal Taxonomy and Evolution,Shanghai Ocean University,Shanghai 201306,China;Engineering Research Center of Environmental DNA and Ecological Water Health Assessment,Shanghai Ocean University,Shanghai 201306,China;Zhejiang Forest Resource Monitoring Center,Hangzhou 310020,Zhejiang,China;Zhejiang Forestry Survey Planning and Design Company Limited,Hangzhou 310020,Zhejiang,China)

机构地区：[1]上海海洋大学海洋动物系统分类与进化上海高校重点实验室,上海201306 [2]上海海洋大学环境DNA技术与水生态健康评估工程中心,上海201306 [3]浙江省森林资源监测中心,浙江杭州310020 [4]浙江省林业勘测规划设计有限公司,浙江杭州310020

出　　处：《上海海洋大学学报》2023年第3期544-552,共9页Journal of Shanghai Ocean University

基　　金：国家自然科学基金(31872207)。

摘　　要：描述采自浙江省苕溪水系■属(Zacco)鱼类一新种——苕溪■(Zacco tiaoxiensis sp.nov.)。经形态比较,该新种与广泛分布于浙江各水系的棘颊■(Z.acanthogenys)形态较相似,但与之有着较明显的形态差异:侧线鳞41~44(vs.44~47),侧线上鳞8(vs.8~10),侧线下鳞3~4(vs.4~5),围尾柄鳞12~15(vs.14~17),性成熟的雄性个体腹鳍到达(vs.超过)肛门。新种与异域分布的中华■(Z.sinensis)和宽鳍■(Z.platypus)的形态区别主要在侧线下鳞数目、头长与体长的比例等可比性状以及眼睛上缘颜色等。基于线粒体细胞色素b基因的遗传分析也支持苕溪■为一独立物种。Zacco tiaoxiensis,a new species of cyprinid fish from Tiaoxi river system in Zhejiang Province,southern China,is described.With morphological comparison,the new species is similar to Z.acanthogenys,which is widely distributed in Zhejiang Province.However,the new species could be distinguished from Z.acanthogenys by the following combination of characters:lateral-line scales comprising 41-44(vs.44-47),scales above lateral-line 8(vs.8-10),scales below lateral-line 3-4(vs.4-5),scales surrounding caudal peduncle 12-15(vs.14-17),for mature male individuals,the ventral fin reaching(vs.exceeding)the anus,etc.The morphological differences among the new species and the allopatric congener species of Z.sinensis and Z.platypus are mainly in the number of scales under the lateral line,comparable characters such as the ratio of head length to body length,and the color of the upper edge of the eyes when living.Moreover,the genetic analysis based on mitochondrial cytochrome b gene also supports that Zacco tiaoxiensis sp.nov.is a valid species.

关 键 词：■属 苕溪■ 新种 细胞色素B 遗传距离 系统发育 

分 类 号：Q959.468[生物学—动物学]