Digital dissection of the head of the rock dove (Columba livia) using contrast-enhanced computed tomography
Digital dissection of the head of the rock dove (Columba livia) using contrast-enhanced computed tomography
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DOI：
10.1186/s40851-019-0129-z
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发表时间：
2019-06-10
影响因子：
2.7
通讯作者：
Porro, Laura B.
中科院分区：
文献类型：
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作者：
Jones, Marc E. H.;Button, David J.;Porro, Laura B.
岩鸽（或普通鸽子）是生物学研究中的重要模式生物，包括头部肌肉解剖学，摄食运动学和颅运动学的研究。然而，目前还没有人尝试建立一个完整的基于计算机的鸽子头生物力学模型。作为实现这一目标的第一步，我们提出了第一个三维数字解剖的鸽子头的对比度增强的计算机断层扫描数据集的基础上实现使用碘碘化钾作为染色剂。我们的数据集使我们能够可视化鸽子的骨骼和肌肉解剖结构，大脑和颅神经以及主要感觉器官，包括非常小和脆弱的特征，以及保持解剖结构的三维拓扑结构。这项工作更新和补充了早期对这种广泛使用的实验室生物的解剖学工作。我们解决了之前对鸽子解剖学描述中出现的几个关键分歧点，包括外收肌的精确排列及其与后收肌的关系。对眼肌的检查突出了鸟类类群之间的差异，并表明鸽子的眼肌更类似于tinamou而不是家雀。此外，我们将我们的三维数据作为可公开访问的文件，用于进一步的研究和教育目的。数字解剖可以实现出色的可视化，并且将成为进一步研究其他鸟类头部解剖以及重建古龙化石软组织的宝贵资源。
The rock dove (or common pigeon), Columba livia, is an important model organism in biological studies, including research focusing on head muscle anatomy, feeding kinematics, and cranial kinesis. However, no integrated computer-based biomechanical model of the pigeon head has yet been attempted. As an initial step towards achieving this goal, we present the first three-dimensional digital dissection of the pigeon head based on a contrast-enhanced computed tomographic dataset achieved using iodine potassium iodide as a staining agent. Our datasets enable us to visualize the skeletal and muscular anatomy, brain and cranial nerves, and major sense organs of the pigeon, including very small and fragile features, as well as maintaining the three-dimensional topology of anatomical structures. This work updates and supplements earlier anatomical work on this widely used laboratory organism. We resolve several key points of disagreement arising from previous descriptions of pigeon anatomy, including the precise arrangement of the external adductor muscles and their relationship to the posterior adductor. Examination of the eye muscles highlights differences between avian taxa and shows that pigeon eye muscles are more similar to those of a tinamou than they are to those of a house sparrow. Furthermore, we present our three-dimensional data as publicly accessible files for further research and education purposes. Digital dissection permits exceptional visualisation and will be a valuable resource for further investigations into the head anatomy of other bird species, as well as efforts to reconstruct soft tissues in fossil archosaurs.