Knowledge Management System of Northwest Institute of Plateau Biology, CAS
| Morphological adaptations of incisors in the subterranean Gansu zokor, Myospalax cansus (Rodentia, Spalacidae) | |
| Lin, Gonghua1,2; Xie, Jiuxiang1,2; Ci, Haixin1,2; Tang, Lizhou1,2; Su, Jianping1; Zhang, Tongzuo1 | |
| 2010-12-01 | |
| 发表期刊 | FOLIA ZOOLOGICA
 |
| ISSN | 0139-7893 |
| 卷号 | 59期号:4页码:295-300 |
| 文章类型 | Article |
| 摘要 | The incisor morphology of rodents varies a good deal among different genera and each structure may have a special evolutionary significance. Some basic and lateral profile measurements of upper and lower incisors which may reflect morphological adaptations of the Gansu zokor (Myospalax cansus, a typical subterranean rodent in northern Asia) and the brown rat (Rattus norvegicus, a typical aboveground rodent that has close body size to the Gansu zokor) were analyzed. GIS (Geographic Information System) software and nonlinear regression were used to analyze incisor lateral profile, allowing the incisors to be viewed as circular arcs with a high degree of accuracy. The results show that: i) zokors have more robust (i.e. larger anteroposterior diameter and transverse diameter values), heavier and longer upper as well as lower incisors than rats; ii) zokors show a significantly higher level of sexual dimorphism (male dominant) than rats on the incisor morphology (including basic and lateral profile measurements) and iii) the upper incisor is heavier than lower incisor in rats, as opposed to zokors, in which the lower incisor is heavier than the upper incisor, indicating that more resources must have been allocated to lower incisors of zokors.; The incisor morphology of rodents varies a good deal among different genera and each structure may have a special evolutionary significance. Some basic and lateral profile measurements of upper and lower incisors which may reflect morphological adaptations of the Gansu zokor (Myospalax cansus, a typical subterranean rodent in northern Asia) and the brown rat (Rattus norvegicus, a typical aboveground rodent that has close body size to the Gansu zokor) were analyzed. GIS (Geographic Information System) software and nonlinear regression were used to analyze incisor lateral profile, allowing the incisors to be viewed as circular arcs with a high degree of accuracy. The results show that: i) zokors have more robust (i.e. larger anteroposterior diameter and transverse diameter values), heavier and longer upper as well as lower incisors than rats; ii) zokors show a significantly higher level of sexual dimorphism (male dominant) than rats on the incisor morphology (including basic and lateral profile measurements) and iii) the upper incisor is heavier than lower incisor in rats, as opposed to zokors, in which the lower incisor is heavier than the upper incisor, indicating that more resources must have been allocated to lower incisors of zokors. |
| 关键词 | Subterranean Rodent Incisor Morphology Adaptation Gis Software |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 关键词[WOS] | SKULL SIZE ; AFRICAN ; GENUS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Zoology |
| WOS类目 | Zoology |
| WOS记录号 | WOS:000285536900004 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://210.75.249.4/handle/363003/1618 |
| 专题 | 中国科学院西北高原生物研究所 |
| 作者单位 | 1.Chinese Acad Sci, NW Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lin, Gonghua,Xie, Jiuxiang,Ci, Haixin,et al. Morphological adaptations of incisors in the subterranean Gansu zokor, Myospalax cansus (Rodentia, Spalacidae)[J]. FOLIA ZOOLOGICA,2010,59(4):295-300. |
| APA | Lin, Gonghua,Xie, Jiuxiang,Ci, Haixin,Tang, Lizhou,Su, Jianping,&Zhang, Tongzuo.(2010).Morphological adaptations of incisors in the subterranean Gansu zokor, Myospalax cansus (Rodentia, Spalacidae).FOLIA ZOOLOGICA,59(4),295-300. |
| MLA | Lin, Gonghua,et al."Morphological adaptations of incisors in the subterranean Gansu zokor, Myospalax cansus (Rodentia, Spalacidae)".FOLIA ZOOLOGICA 59.4(2010):295-300. |
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