Nasal Morphometry in Marmosets: Loss and Redistribution of Olfactory Surface Area
Nasal Morphometry in Marmosets: Loss and Redistribution of Olfactory Surface Area
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DOI：
10.1002/ar.23029
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发表时间：
2014-11
期刊：
影响因子：
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通讯作者：
T. Smith;Thomas P. Eiting;C. Bonar;B. Craven
中科院分区：
文献类型：
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作者：
T. Smith;Thomas P. Eiting;C. Bonar;B. Craven
这两个主要的灵长类在内部鼻部解剖上有所不同。与单目动物(例如猴子)相比，链猴(例如狐猴)有更多的鼻甲和凹陷。由于鼻表面积(SA)还没有进行详细的定量比较，我们测量了连续切片的猴子(Callithrix Jacchus，Cebuella pygmaea)的黏膜。数据与之前发表的关于老鼠狐猴的研究结果进行了比较。用CT扫描Cebuella和Microcebus的头部对鼻腔进行数字化重建。此外，还利用切片式照片进行了形态计量学和功能分析。与绒猴相比，绒猴的筛窦复合体的SA约为其大小的一半，并且被较少的嗅黏膜覆盖(绒猴为18%-24%，而绒猴的∼为50%)。虽然小头猴的鼻甲复合体承担着鼻道中总嗅觉粘膜的一半，但大多数(∼80%)的嗅觉粘膜分布在绒猴的其他表面(如鼻中隔)。与之前公布的数据相比，所有灵长类物种的嗅觉表面积(OSA)都比其他类似大小的哺乳动物要小，但绒猴的情况尤其如此。综上所述，这些发现支持了这样的假设，即至少在一些单突中存在OSA减少，这可能与鼻窝后上方尺寸的减少有关。然而，单鼻器可能通过在非鼻甲表面重新分布嗅黏膜而将其嗅觉损失降至最低。我们的发现还表明，灵长类动物嗅觉区域的气流模式不同。Anat Rec，297：2093-2104,2014。©2014 Wiley期刊，Inc.
The two major groups of primates differ in internal nasal anatomy. Strepsirrhines (e.g., lemurs) have more numerous turbinals and recesses compared with haplorhines (e.g., monkeys). Since detailed quantitative comparisons of nasal surface area (SA) have not been made, we measured mucosa in serially sectioned monkeys (Callithrix jacchus, Cebuella pygmaea). Data were compared with previously published findings on the mouse lemur, Microcebus murinus. The nasal airways were digitally reconstructed using computed tomography scanned heads of Cebuella and Microcebus. In addition, morphometric and functional analyses were carried out using segmented photographs of the histological sections of Cebuella and Microcebus. The SA of the ethmoturbinal complex is about half as large in marmosets compared with Microcebus, and is covered with less olfactory mucosa (18%–24% in marmosets, compared with ∼50% in Microcebus). Whereas the ethmoturbinal complex of Microcebus bears half of the total olfactory mucosa in the nasal airway, most (∼80%) olfactory mucosa is distributed on other surfaces in the marmosets (e.g., nasal septum). A comparison to previously published data suggests all primate species have less olfactory surface area (OSA) compared with other similar‐sized mammals, but this is especially true of marmosets. Taken together, these findings support the hypothesis that there is a reduced OSA in at least some haplorhines, and this can be linked to diminished posterosuperior dimensions of the nasal fossae. However, haplorhines may have minimized their olfactory loss by redistributing olfactory mucosa on non‐turbinal surfaces. Our findings also imply that airflow patterns in the olfactory region differ among primates. Anat Rec, 297:2093–2104, 2014. © 2014 Wiley Periodicals, Inc.