| 题名 | 澜沧江姬鼠（Apodemus ilex）和大耳姬鼠（Apodemus latronum）头骨形态地理分化及其生物地理初步分析 |
| 作者 | 金虎 |
| 学位类别 | 硕士 |
| 答辩日期 | 2010-11 |
| 授予单位 | 中国科学院研究生院 |
| 授予地点 | 北京 |
| 导师 | 蒋学龙 |
| 关键词 | 澜沧江姬鼠 大耳姬鼠 形态分化 适应性进化 |
| 学位专业 | 动物学 |
| 中文摘要 | 姬鼠有很长的进化历史，并且其进化历史被认为与全球地质变迁、植物区系演替有关。横断山脉具有最复杂的水系、山系及复杂的地质历史。本文以横断山脉为主要分布区的澜沧江姬鼠（Apodemus ilex）和横断山脉的特有种大耳姬鼠（A. latronum）为研究对象，旨在探讨这两种姬鼠的形态分化。 本研究对308号澜沧江姬鼠成年头骨标本及188号大耳姬鼠成年头骨标本的16个变量进行了测量，利用多变量和单变量分析方法，对两种姬鼠的头骨形态分化进行了研究。分析表明澜沧江姬鼠可分为6个居群：高黎贡北、高黎贡南、永德大雪山、云岭南、云岭北和东川轿子山；而大耳姬鼠可分为4个居群：川西藏南、川中南、滇西北和滇东北。并且差异主要体现在下臼齿列长（CLLMR）、上臼齿列长（CLUMR）、上臼齿横宽（M1-M1）、第一上臼齿长（LM1）、下齿列长（LLTR）和眶间宽（IB）等6个与咀嚼、咬合能力有关的变量，表明食性差异在姬鼠类群适应性进化中扮演着重要角色。 |
| 英文摘要 | Wood mice (Apodemus) have a long evolutionary history and a strong relationship withglobal geological change and floral evolution. In this study, I analyzed morphological variation in two wood mice species at the Hengduan Mountains of Southwest China which have very complex river systems, mountain ranges and geological history. To evaluate morphometric differentiation among the Hengduan mountain ranges, I analyzed the skulls of A. ilex which mainly distribute in the Hengduan mountains, and A. Latronum, a species endemic to the Hengduan mountains. I measured 16 cranial variables for 308 specimens of A. ilex and 188 specimens of A. latronum, and I used multivariate and univariate analyses to examine the cranial morphological differentiation. The analyses showed that A. ilex can be divided into six groups: Northern Gaoligong Mountain, Southern Gongligong Mountain, Northern Yunling Mountains, Southern Yunling Mountains, Yongde Snow Mountain and Dongchuan Jiaozi Mountain while A. latronum can bedivided into 4 groups: Western Sichuan-Southern Tibet, South-Central Sichuan, Northwest Yunnan and Northeast Yunnan. For both species the most important variables were those related to chewing ability and occlusion capacity (CLLMR: Crown length of lower molar row, CLUMR: Crown length of upper molar row,M1-M1: Crown breadth of upper molar, LM1: Length of first upper malar, LLTR: Length of lower tooth row, and IB: Interorbital breadth) suggesting that diet variation plays an important role in the evolutionary adaptations of Apodemus. |
| 语种 | 中文 |
| 公开日期 | 2010-12-17 |
| 内容类型 | 学位论文 |
| 源URL | [http://159.226.149.42:8088/handle/353002/6542]  |
| 专题 | 昆明动物研究所_兽类生态与进化 |
| 推荐引用方式 GB/T 7714 | 金虎. 澜沧江姬鼠（Apodemus ilex）和大耳姬鼠（Apodemus latronum）头骨形态地理分化及其生物地理初步分析[D]. 北京. 中国科学院研究生院. 2010. |
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