岭鳅属(Oreonectes)鱼类的分类整理
文献类型：学位论文
| 作者 | 杜丽娜 |
| 学位类别 | 硕士 |
| 答辩日期 | 2007-06 |
| 授予单位 | 中国科学院研究生院 |
| 授予地点 | 北京 |
| 导师 | 杨君兴 ; 陈小勇 |
| 关键词 | 条鳅亚科 岭鳅属 主成分分析 分类整理 |
| 其他题名 | Taxonomic revision of the Nemacheilinae genus Oreonectes (Cypriniformes: Balitoridae) |
| 学位专业 | 动物学 |
| 中文摘要 | 本研究对岭鳅属鱼类进行了分类整理。对目前鉴定出的岭鳅属鱼类6个种63尾鱼类标本的28个可量性状和6个可数性状进行了测量和计数；对分类学上存在疑问的种的测量数据进行了主成分分析。结合测量、计数以及主成分分析的结果，并应用系统发育物种概念，评价岭鳅属鱼类物种的有效性，并描述岭鳅属鱼类两新种。主要结论如下： 1. 岭鳅属的主要鉴别特征为：前、后鼻孔分开一短距离，前鼻孔位于一个管状系统中，管状系统的末端延长成须状；骨质鳔囊为敞开型；上颌无齿状突起。借此特征岭鳅属鱼类与条鳅亚科（Nemachilinae）其它属级类群完全区分开来。 2. 小眼岭鳅（Oreonectes microphthalmus）采自广西都安、罗城。根据其尾鳍叉形，眼睛退化仅残留一黑色素眼点，全身裸露无鳞，头部的眶下管孔为3+0以及眶上管孔为7，将小眼岭鳅描述成岭鳅属一新种。 3. 多斑岭鳅（Oreonectes polystigmus）采自广西桂林大埠。根据其侧线不完全，仅在头部后方有6个侧线孔，头部的眶上管孔为7，眶下管孔为4+7以及身体布满不规则的斑点或斑块而将其描记成岭鳅属一新种。 4. 分布于广西都安的透明岭鳅（Oreonecetes translucens）与分布于贵州荔波的长须盲副鳅（Paracobitis longibarbatus）、荔波盲条鳅（Nemacheilus liboensis）和荔波岭鳅（Oreonectes liboensis）是同一物种，并根据其前鼻孔与后鼻孔紧相邻、骨质鳔囊侧囊的后壁为骨质、雄性胸鳍外侧鳍条增宽变硬的特征，将它们归属为高原鳅属（Triplophysa），有效名称为长须盲高原鳅（Triplophysa longibarbatus）。 |
| 英文摘要 | A taxonomic revision of the Chinese Nemacheilinae fishes of the genus of Oreonectes was made in this paper. 28 morphometric measurements and 6 numeric characters were taken for a total 63 specimens from 6 currently recognized species of Oreonectes in Southwestern China. For those species with uncertainity of taxonomic status the principal component analysis was conducted for morphometric measurements. The outcomes of these analyses, along with the numeric data and color patterns, were utilized to evaluate the species validity under phylogenetic species concept. The main conclusion reached here are as follows: 1. Oreonectes is distinguished from other genera of Nemacheilinae by the following characters: anterior and posterior nostrils are separated from each other by a short distance; tubular flap of the anterior nostril elongated into barbel-like structure. Bony capsule is of uncovered pattern. No processus dentiformis is present on the upper jaw. 2. Oreonectes microphthalmus sp. nov is described from Du’an county and Luocheng county, Guangxi Zhuang Autonomous Region. It can be distinguished from other species by the following characters: caudal fin forked; degenerate eyes, which only have a black pigment; body naked; cephalic lateral line system with 3+0 infraobital and 7 supraorbital. 3. Oreonectes polystigmus sp. nov is described from Guilin County, Guangxi Zhuang Autonomous Region. It can be distinguished from other species by the following characteristics: cephalic lateral line system with 7 supraorbital, 4+7 infraorbital; lateral line incomplete, with 6 pores; body with many different spots. 4. Oreonectes translucens, Paracobitis longibarbatus, Nemacheilus liboensis and Oreonectes liboensis are the same species. They are both assigned to the genus Triplophysa by the following characteristics: bony capsules is of enclosed pattern; tubular flap of the anterior nostril elongated into barbel-like structure, the posterior nostril is close to the anterior nostril; sexual dimorphism pronounced, males have broadened and thickened outer branched pectoral rays, which are covered by small roundish, condensed epidermal tubercles. Oreonectes translucens, P. longibarbatus, O. liboensis and N. liboensis are only a synonym of Triplophysa longibarbatus. |
| 语种 | 中文 |
| 公开日期 | 2010-10-14 |
| 源URL | [http://159.226.149.42:8088/handle/152453/6102]  |
| 专题 | 昆明动物研究所_系统进化与生物地理学 昆明动物研究所_东南亚野生动物多样性 管理、支撑部门_动物博物馆 |
| 推荐引用方式 GB/T 7714 | 杜丽娜. 岭鳅属(Oreonectes)鱼类的分类整理[D]. 北京. 中国科学院研究生院. 2007. |
入库方式： OAI收割
来源：昆明动物研究所
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