哺乳动物振动体中脑髓的结构:多形态和命名法
O F Chernova1, Yu F Ivlev2, E G Potapova2
1Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, Moscow, Russia. olga.chernova.moscow@gmail.com.
概括
这项研究使用扫描电子显微镜在101种哺乳动物中揭示了多样化的vibrissa髓架构. 一些水生和地下哺乳动物完全缺乏振动神经髓.
科学领域:
- 哺乳动物解剖学 哺乳动物解剖学
- 比较形态学的比较形态学
- 扫描电子显微镜扫描电子显微镜
背景情况:
- 振动髓的结构对于感官功能至关重要.
- 之前的研究还没有在各种哺乳动物中系统地分类vibrissa骨髓结构.
研究的目的:
- 识别,研究和系统化各种哺乳动物物种中振动神经骨髓的结构.
- 为了建立一个原始的命名法来描述vibrissa medulla变化.
主要方法:
- 使用扫描电子显微镜 (SEM) 进行振动性骨髓的高分辨率成像.
- 检查了来自80个属和8个哺乳动物类的101个物种的振动样本.
- 开发并应用了一种用于中枢结构的新型分类系统.
主要成果:
- 在vibrissa medullas中确定了重要的建筑变异,归因于内部隔间 (空气腔和隔壁).
- 描述了十种不同的脑髓类型:膜状,金字塔状,块状圆柱形,块状多面体,混乱型,小膜状,大膜状,星状,单排列型和空洞.
- 观察到多种脑髓类型可以在单个vibrissa内共存.
- 发现某些地下,半水生和水生物种 (例如,,德斯曼,头) 的振动体缺乏中枢.
结论:
- 这项研究提供了哺乳动物vibrissa骨髓架构的第一个全面的系统化.
- 建筑的多样性反映了振动功能和适应不同环境的变化.
- 在一些特殊物种中缺乏骨髓突出显示了振动性发育中的独特进化途径.
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