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吴伟名,李建中.2017.中国青鳉属鱼类新纪录:鳍斑青鳉.动物学杂志,52(5):891-896.
中国青鳉属鱼类新纪录:鳍斑青鳉
A New Record Species of Ricefishes in China: Oryzias pectoralis
投稿时间:2016-11-24  修订日期:2017-08-25
DOI:10.13859/j.cjz.201705020
中文关键词:  鳍斑青鳉  青鳉属  新纪录  中国
英文关键词:Oryzias pectoralis  Oryzias  New record  China
基金项目:国家自然科学基金项目(No. 31272261)
作者单位E-mail
吴伟名 湖南师范大学生命科学学院 长沙 410081 wmeter@126.com 
李建中 湖南师范大学生命科学学院 长沙 410081 ljzhong@hunnu.edu.cn 
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中文摘要:
      2015年11月在中国广西省靖西市龙江河(22°59′25″N,106°21′50″E,海拔664 m)采得青鳉属鱼类30尾,经鉴定为中国鱼类新纪录种——鳍斑青鳉(Oryzias pectoralis Roberts,1998)。其主要鉴别特征为:体形细长而侧扁;胸鳍基部具黑色斑块;背鳍和臀鳍鳍条无角化延伸;尾鳍末端呈圆弧状;尾鳍上下边缘的鳍条呈橙黄色。通过设计简并引物进行PCR扩增得到CO1基因序列,以其657 bp序列与同属其他种比较并构建邻接进化树,以斑马鱼(Danio rerio)和食蚊鱼(Gambusia affinis)为外群,所得系统树支持形态鉴定结果。该鱼标本现保存于湖南师范大学生命科学学院脊椎动物标本室。
英文摘要:
      Oryzias pectoralis was identified from more than thirty ricefishes captured from the Long-Jiang in Jingxi County, Guangxi Zhuang Autonomous Region, South China in November, 2015, which represents a newly recorded distribution of the species in China. This ricefish has the following main characteristics: body slender compressed laterally; a prominent black plaque presents on the pectoral-fin base; no prolonged filamentous addition to distal ends of dorsal and anal-fins; caudal fin rounded, a yellow to orange submargin stripe among each caudal-fin lobe. The phylogenetic tree constructed by NJ method based on CO1 gene supports the results of morphological identification. The characteristics data of O. pectoralis obtained by X ray and morphometry were compared with those of O. sinensis, O. latipes, O. minutillus, O. curvinotus and O. pectoralis from Vietnam respectively. All specimens examined were deposited in the fish collection at the college of life science, Hunan Normal University, Changsha, China.
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