Gündemir Ozan, Szara Tomasz, Yalin Ebru Eravci, Karabagli Murat, Mutlu Zihni, Yilmaz Osman, Büyükünal Serkan Kemal, Blagojevic Milos, Parés-Casanova Pere M
Department of Anatomy, Faculty of Veterinary Medicine, Istanbul University-Cerrahpasa, 34500 Istanbul, Turkey.
Department of Morphological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences-SGGW, 02-776 Warsaw, Poland.
Animals (Basel). 2023 Feb 9;13(4):614. doi: 10.3390/ani13040614.
A variety of skull shapes are frequently used for discrimination between animal species, breeds, and sexes. In this study, skulls of three different breeds of cats were examined by the geometric morphometric method, with the aim of revealing skull shape differences. For this purpose, 27 cats (6 British Shorthair, 7 Scottish Fold, and 14 Van cats) were used. The skulls of cats were modeled by computed tomography. Geometric morphometrics was applied using dorsal (8 landmarks, 63 semilandmarks) and lateral (8 landmarks, 63 semilandmarks) skull projections on these models. Centroid size differences between the breeds were statistically insignificant. However, the differences in shape were statistically significant for both the dorsal view and lateral view. Shape variation was less in the British Shorthair than in other breeds. Shape differences generally occurred around the orbit. In the skull of Scottish Folds, the orbit was situated more caudally than in other breeds. The British Shorthair had the largest orbital ring. In dorsal view, the Scottish Fold had the largest orbital diameter. The orbital ring of Van cats was smallest in both dorsal and lateral views. In the canonical variate analysis, it was seen that the breeds were separated from each other. The shape difference in the skull between different cat breeds could be revealed by geometric morphometrics. The results of this study provide useful information for taxonomy.
多种头骨形状常被用于区分动物的物种、品种和性别。在本研究中，采用几何形态测量法对三种不同品种猫的头骨进行了检查，目的是揭示头骨形状的差异。为此，使用了27只猫（6只英国短毛猫、7只苏格兰折耳猫和14只梵猫）。通过计算机断层扫描对头骨进行建模。在这些模型上，利用头骨的背侧（8个地标点、63个半地标点）和侧面（8个地标点、63个半地标点）投影应用几何形态测量法。品种间的质心大小差异无统计学意义。然而，背侧视图和侧视图的形状差异均具有统计学意义。英国短毛猫的形状变异比其他品种小。形状差异一般出现在眼眶周围。在苏格兰折耳猫的头骨中，眼眶比其他品种更靠后。英国短毛猫的眼眶环最大。在背侧视图中，苏格兰折耳猫的眼眶直径最大。梵猫的眼眶环在背侧和侧视图中均最小。在典型变量分析中，可以看到不同品种相互分离。几何形态测量法能够揭示不同品种猫头骨的形状差异。本研究结果为分类学提供了有用信息。
