羊和绵羊的轨道形状:对称分析
İftar Gürbüz1, Yasin Demiraslan1, İsmail Demircioğlu2
1Department of Anatomy, Faculty of Veterinary Medicine, Burdur Mehmet Akif Ersoy University, Burdur, Turkey.
Anatomia, histologia, embryologia
|March 23, 2024
概括
用几何形态测量评估了山羊和绵羊头骨的轨道对称性. 这两种物种在轨道形状上表现出统计学上显著的不对称性,在右和左轨道之间观察到不同的模式.
科学领域:
- 比较解剖学的比较解剖学.
- 几何形态测量几何形态测量
- 头骨形态学 头骨形态学
背景情况:
- 轨道对称性对于视觉功能和头骨发育至关重要.
- 了解动物头骨中的不对称性可以提供关于进化压力和发育稳定的见解.
- 以前的研究已经探索了骨不对称性,但在山羊和绵羊中详细的轨道对称性分析是有限的.
研究的目的:
- 量化评估山羊 (Capra aegagrus hircus) 和羊 (Ovis aries) 头骨中的轨道对称性.
- 识别和比较这些物种轨道上波动和方向不对称的模式.
- 为了研究轨道形状对物种歧视的潜力.
主要方法:
- 在83只山羊和绵羊头骨 (33只山羊,50只绵羊) 上使用了几何形态测量.
- 36个地标定义了轨道边界,并为对称性分析创建了镜像.
- 统计分析包括主要组件分析 (PCA) 和区分函数分析 (DFA).
主要成果:
- 在山羊和绵羊的轨道形状中检测到统计学上显著的波动和方向不对称 (p < 0.0001).
- 主要组件分析显示了可归因于对称和不对称组件的显著形状变化.
- 区分函数分析显示,在按物种分组轨道时,其准确度很高,特别是山羊的右轨道 (100%) 和羊的左轨道 (96.5%).
结论:
- 羊和绵羊的头骨表现出显著的轨道不对称性,表明了发育或环境的影响.
- 轨道形状具有对物种识别有用的歧视性特征.
- 这些发现有助于了解小反动物的面发育和不对称性.
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