Kurita Hiroyuki, Suzumura Takafumi, Kanchi Fujio, Hamada Yuzuru
Division of Cultural Property, Board of Education, Oita City, 2-31 Niage-machi, Oita, Oita 870-8504, Japan.
Primates. 2012 Jan;53(1):7-11. doi: 10.1007/s10329-011-0280-4. Epub 2011 Nov 5.
The quantification of nutritional status (e.g., total body fat) of animals is difficult, because the linear dimension (body length) required for the calculation of proxy parameters, such as the physique or body mass indices, cannot be measured without capture. One solution is photogrammetry of body length, provided the following two criteria are met: (1) the camera axes and subject are oriented vertically, and (2) anatomical landmarks are easily identified with low measurement error. By modifying Mori's (Primates 20:371-397, 1979) approach, we devised an accurate photogrammetric method that uses a horizontal bar with an attached ruler for the monkey to traverse, and the anatomical landmarks of the eye and upper border of the ischial callosity to measure body length. We tested the applicability of this method on 11 adult female, habituated, free-ranging Japanese macaques (Macaca fuscata). Somatometric body length (crown-rump length and anterior trunk length) was statistically compared with the body length obtained using photogrammetry. The significant correlation of the photogrammetric body length with each somatometric measurement verified that the former could be employed to calculate various indices that are used to characterize fat mass (nutritional status) in Japanese macaques. The advantages and disadvantages of photogrammetry are also discussed.
对动物营养状况（如体脂总量）进行量化很困难，因为在不捕获动物的情况下，无法测量计算代理参数（如体质指数或体重指数）所需的线性尺寸（体长）。一种解决方案是体长摄影测量法，前提是满足以下两个条件：（1）相机轴与拍摄对象垂直定向，（2）解剖学标志易于识别且测量误差小。通过改进森（《灵长类动物》20:371 - 397，1979年）的方法，我们设计了一种精确的摄影测量方法，该方法使用带有附着尺子的水平杆让猴子穿过，并利用眼睛和坐骨胼胝体上缘的解剖学标志来测量体长。我们在11只成年雌性、习惯化、自由放养的日本猕猴（猕猴属fuscata）上测试了该方法的适用性。将测量体长（头顶至臀长和躯干前部长）与通过摄影测量获得的体长进行了统计学比较。摄影测量体长与各测量体长之间的显著相关性证实，前者可用于计算各种用于表征日本猕猴脂肪量（营养状况）的指数。还讨论了摄影测量法的优缺点。
