中国横断山区裂腹鱼亚科(Schizothoracinae)部分类群的系统分类和谱系地理学研究
文献类型：学位论文
| 作者 | 杨剑 |
| 学位类别 | 博士 |
| 答辩日期 | 2009-05 |
| 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 | 裂腹鱼属 系统整理 分子系统学 谱系地理学 |
| 其他题名 | Systematic and phylogeographic studies on some Schizothoracinae fishes in the Hengduan Mountains region |
| 中文摘要 | 论文以线粒体细胞色素b基因对裂腹鱼属鱼类的两个分布广泛的物种 (灰裂腹鱼Schizothorax griseus和光唇裂腹鱼Schizothorax lissolabiatus)进行了谱系地理学研究；对灰裂腹鱼进行了物种分化研究；对光唇裂腹鱼进行了地理变异研究；并进一步对横断山区分布的裂腹鱼属鱼类进行了谱系地理学研究；整理了中国境内伊洛瓦底江水系分布的裂腹鱼属鱼类。 对灰裂腹鱼和光唇裂腹鱼的谱系地理学研究结果表明：1、来自不同水系的灰裂腹鱼和光唇裂腹鱼个体间存在明显的遗传差异，两个物种各自不呈单系；灰裂腹鱼和光唇裂腹鱼同域分布的个体有共享单倍型的情况；北盘江、牛栏江、乌江和元江的个体在系统树上有较近的亲缘关系。2、对灰裂腹鱼进行了重新描述并对来自于不同水系被认为是灰裂腹鱼的标本进行了查看，结果表明：灰裂腹鱼分布于金沙江下游及其支流；分布于澜沧江的，过去被认为是灰裂腹鱼的种类代表裂腹鱼属鱼类一新种——裸腹裂腹鱼Schizothorax nudiventris sp. nov.；分布于南盘江的过去被认为是灰裂腹鱼的种类代表一新种——异鳔裂腹鱼Schizothorax heterophysallidos sp. nov.；分布于北盘江的过去被认为是灰裂腹鱼的种类代表一新种——北盘裂腹鱼Schizothorax beipanensis sp. nov.。3、本研究还陈述了光唇裂腹鱼的各地理种群(怒江、澜沧江、元江、南盘江和北盘江)部分形态特征以及差异情况。主成分分析结果表明：怒江和澜沧江个体在形态上无差异；澜沧江上游和下游个体在部分特征上表现出一定程度上的渐变异。4、横断山区裂腹鱼属鱼类的谱系地理学研究表明：系统树不支持裂腹鱼属鱼类亚属的划分；本属不同种类Cyt b基因序列的最大遗传距离为11.2%；怒江和澜沧江的个体以较高的支持率聚成一单系；伊洛瓦底江水系与雅鲁藏布江的个体以较高的支持率聚成一单系；金沙江流域与元江、南盘江、北盘江的个体聚成一单系；晚中新世(9.5 Ma)和早上新世(3.6 Ma)的青藏高原的强烈隆升可能是横断山区裂腹鱼属鱼类物种分化的重要时间；裂腹鱼属鱼类的演化是历史生物地理学过程中隔离分化假说的一个实例；横断山区的古河道向南入海可能有3个方向，它们是雅鲁藏布-伊洛瓦底江方向、怒江-澜沧江方向、金沙江及其支流-红河方向(包括南盘江-红河)；不支持长江第一湾为袭夺湾的观点，古金沙江入古红河可能不经剑川-洱海一线；滇中、滇东北水系发育复杂。5、本研究还对中国境内伊洛瓦底江水系分布的裂腹鱼属鱼类进行了整理。认为本地区裂腹鱼属鱼类共8种(包括2新种)：南方裂腹鱼Schizothorax meridionalis、奇异裂腹鱼Schizothorax heteri sp. nov.、独龙裂腹鱼Schizothorax dulongensis、软刺裂腹鱼Schizothorax malacathus、少鳞裂腹鱼 Schizothorax oligolepis、吸口裂腹鱼Schizothorax myzostomus、细身裂腹鱼Schizothorax elongatus和白体裂腹鱼Schizothorax leukus sp. nov.。 |
| 英文摘要 | This dissertation studied on some Schizothoracinae species based on morphology and molecular characteristics. In chapter one, the phylogeography of Schizothorax griseus and Schizothorax lissolabiatus were studied. Results indicated: (1) individuals from different river drainages showing significant genetic differences; (2) neither individuals of S. griseus nor S. lissolabiatus are monophyly independently; (3) different individuals of S. griseus and S. lissolabiatus collected in the same location may share same haplotype; (4) haplotypes from the Beipan River, the Niulan River, the Wu Jiang and the Red River have a closer genetic relationship compared with the haplotypes from the Mekong River and the Salween River. The species Schizothorax griseus was re-described and identified. Schizothorax griseus was distributed in the lower reach of Jinsha River; individuals distributed in the Mekong River basin which originally identified as S. griseus should represent a new species, Schizothorax nudiventris; individuals distributed in the Nanpan River which originally identified as S. griseus should represent a new species, Schizothorax heterophysallidos; individuals distributed in the Beipan River which originally identified as S. griseus should represent the third new species, Schizothorax beipanensis. The morphological differences of Schizothorax lissolabiatus in different drainages (the Salween River, the Mekong River, the Red River, the Nanpan River and the Beipan River) were stated. Furthermore, the phylogeography of Schizothorax in the Hengduan Mountains region was studied inferred from cytochrome b sequences. The results indicated: (1) the subgenera of Schizothorax are not supported by phylogenetic tree; (2) the largest Kimura 2-parameter genetic distance of cytochrome b sequences between Schizothorax species is 11.2%; (3) the populations between Irrawaddy River and Brahmaputra River have a closer relationship; (4) the Jinsha River, the Red River, the Beipan River and the Nanpan River have a closer relationship compared with the Mekong and Salween rivers; (5) the uplift of Qinghai-Tibetan Plateau in late Miocene (9.5 Ma) and early Pliocene (3.6 Ma) are the main speciation times for Schizothorax. Our results do not support the hypothesis that the First Bend of the Yangtze River is a capture bay; the paleo-Jinsha River may not flow through Jianchuan-Erhai Lake; the river systems in central and northeast of Yunnan were more complicated than the pattern of today, several capture actions probably happened. Schizothorax fishes in Chinese Irrawaddy region were also reviewed, the results reveal eight valid specie including two new species: Schizothorax meridionalis 、S. dulongensis 、S. malacathus 、S. oligolepis 、S. myzostomus、S. elongatus、Schizothorax leukus sp. nov. and Schizothorax heteri sp.nov. |
| 语种 | 中文 |
| 公开日期 | 2010-10-22 |
| 源URL | [http://159.226.149.42:8088/handle/152453/6316]  |
| 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 |
| 推荐引用方式 GB/T 7714 | 杨剑. 中国横断山区裂腹鱼亚科(Schizothoracinae)部分类群的系统分类和谱系地理学研究[D]. 北京. 中国科学院研究生院. 2009. |
入库方式： OAI收割
来源：昆明动物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。