Pitakarnnop T, Buddhachat K, Euppayo T, Kriangwanich W, Nganvongpanit K
Animal Bone and Joint Research Laboratory, Department of Veterinary Biosciences and Public Health, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, 50100, Thailand.
Excellence Center in Osteology Research and Training Center, Chiang Mai University, Chiang Mai, 50200, Thailand.
Anat Histol Embryol. 2017 Jun;46(3):294-303. doi: 10.1111/ahe.12269. Epub 2017 Mar 14.
This study demonstrates sexual dimorphism of feline bones, based on a morphometric analysis of 38 dried feline skulls and pelvic bones (20 males, 18 females). A total of 44 parameters (skull = 12, mandible = 10, pelvis = 22) were measured using a digital vernier calliper. In morphological observation of these bones, there were three hallmarks indicating a remarkable difference between sexes: the coronoid process of the mandible (accuracy rate = 88.2%); and the os coxae - caudal ventral iliac spine (accuracy rate = 94.4%), and the angle of the ischiatic arch (accuracy rate = 74.3%). In addition, based on morphometric characteristics, six parameters were found to be significantly different (P < 0.05) between males and females, consisting of one in the mandible and five in the pelvis, but no parameters in the skull. Effective equations to discriminate gender were generated through a stepwise discriminant analysis from feline mandible and pelvic bones. Our findings showed that an equation from the pelvic bones, Y = [-16.066T/O] + [2.559IC/PS] + [13.357*TTL/ISA] - [4.478], appeared to be more applicable with a 97.3% accuracy rate, while a function from the mandible gave a 64.9% accuracy rate. In conclusion, we suggest that an equation from feline pelvic measurements and three hallmarks, one on the mandible and two on the os coxae, can be used for sex estimation.
本研究基于对38个干燥的猫科动物头骨和骨盆骨（20例雄性，18例雌性）的形态测量分析，证明了猫科动物骨骼的两性差异。使用数字游标卡尺测量了总共44个参数（头骨 = 12个，下颌骨 = 10个，骨盆 = 22个）。在对这些骨骼的形态学观察中，有三个特征表明两性之间存在显著差异：下颌骨的冠状突（准确率 = 88.2%）；髋骨 - 髂骨尾侧腹侧棘（准确率 = 94.4%），以及坐骨弓角度（准确率 = 74.3%）。此外，基于形态测量特征，发现有六个参数在雄性和雌性之间存在显著差异（P < 0.05），其中一个在下颌骨，五个在骨盆，但头骨中没有参数。通过对猫科动物下颌骨和骨盆骨进行逐步判别分析，生成了判别性别的有效方程。我们的研究结果表明，来自骨盆骨的方程Y = [-16.066T/O] + [2.559IC/PS] + [13.357*TTL/ISA] - [4.478]似乎更适用，准确率为97.3%，而来自下颌骨的函数准确率为64.9%。总之，我们建议来自猫科动物骨盆测量的一个方程以及三个特征，一个在下颌骨上，两个在髋骨上，可用于性别估计。
