Comparative Anatomy and Systematic Implications of the Turbinal Skeleton in Lagomorpha (Mammalia)
Comparative Anatomy and Systematic Implications of the Turbinal Skeleton in Lagomorpha (Mammalia)
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兔形目（哺乳动物）鼻甲骨骼的比较解剖学及其系统意义
DOI：
10.1002/ar.23027
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发表时间：
2014
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为了阐明兔形目鼻甲骨架的系统相关性，对6种钩虫科、21种Leporid和2种外类群种的筛骨区域进行了研究。通过高分辨率计算机断层扫描(μCT)对物种进行调查。甲鱼的数量和形状与主要分支和几个属相对应。所有研究中的兔形目动物都有一个深挖的鼻甲，它与半环板是连续的；这一特征很可能是兔形目动物的同形。特别是，嗅鼻甲(额鼻甲、筛鼻甲和鼻甲间鼻甲)提供了新的系统信息。前鼻甲的形态由两个额鼻甲、三个筛甲和一个介于筛甲I和筛甲II之间的鼻甲组成。斜甲科是由于失去筛甲III而形成的，两个额鼻甲之间的鼻甲间是鼻甲科的自形。前鼻甲的变形是因为有非常细长的第一个筛甲，但在减少鼻甲的数量上表现出一种令人费解的模式。Pronolagus rupestrisandRomerolagus diazi独立地将它们的鼻甲减少到只有两个额头和两个筛头，这是取样的鼻甲中最少的。相反，在研究中的更多的麻风属(Oryctolagus，Caprolagus，Sylvilagus，和Lepus)显示出增加鼻甲数量的趋势，要么通过发育筛甲IV(Caprolagus hispidus，Lepus arcticus)，要么通过额外的鼻甲间。研究了高山鼠兔、楔纹斑潜蝇和欧洲斑潜蝇的种内变异，并局限于这两种斑潜蝇的额鼻甲隐窝的额外的鼻甲间变异。Anat Rec，297：2031-2046,2014。©2014 Wiley期刊，Inc.
In order to elucidate the systematic relevance of the turbinal skeleton in Lagomorpha the ethmoidal regions of 6 ochotonid, 21 leporid, and 2 outgroup species (Sciurus vulgaris,Tupaiasp.) species were investigated by high‐resolution computed tomography (μCT). Number and shape of turbinals correspond to major clades and to several genera. All Lagomorpha under study have a deeply excavated nasoturbinal that is continuous with the lamina semicircularis; a feature likely to be an autapomorphy of lagomorphs. In particular, the olfactory turbinals (frontoturbinals, ethmoturbinals, and interturbinals) provide new systematic information. The plesiomorphic lagomorph pattern comprises two frontoturbinals, three ethmoturbinals, and one interturbinal between ethmoturbinal I and II. Ochotonidae are derived from the lagomorph goundplan by loss of ethmoturbinal III; an interturbinal between the two frontoturbinals is an autapomorphy of Leporidae.Pronolagusis apomorphic in having a very slender first ethmoturbinal, but shows a puzzling pattern in decreasing the number of turbinals.Pronolagus rupestrisandRomerolagus diazihave independently reduced their turbinals to just two fronto‐ and two ethmoturbinals, which is the lowest number among the sampled lagomorphs. In contrast, the more derived leporid genera under study (Oryctolagus,Caprolagus,Sylvilagus, andLepus) show a tendency to increase the number of turbinals, either by developing an ethmoturbinal IV (Caprolagus hispidus,Lepus arcticus) or by additional interturbinals. Intraspecific variation was investigated inOchotona alpina, Oryctolagus cuniculus, andLepus europaeusand is restricted to additional interturbinals in the frontoturbinal recess of the two leporids. Anat Rec, 297:2031–2046, 2014. © 2014 Wiley Periodicals, Inc.