大蹄蝠头骨形态地理变化

本文采用几何形态测量法对中国大蹄蝠9个不同地理种群头骨形态变化进行研究。结果表明，不同地理种群的头骨大小及形状存在显著差异，其中云南思茅种群与海南陵水种群差异最大。回归分析表明头骨形态的地理变化与气候因素相关。随着年均温度、年均湿度的升高以及年均降水量的增多，大蹄蝠头骨变小，上颌、齿、咬肌附着部分以及耳蜗部分的形状发生变化。此外，头骨大小与海拔高度呈正相关，头骨形状变化与纬度显著相关。本研究表明对栖息地生态条件的适应是中国大蹄蝠头骨形态地理变化的重要原因。

Geographical variation in the skull morphology of the great Himalayan leaf-nosed bat (Hipposideros armiger)

We studied the geographical variation in skull morphology of the Himalayan leaf-nosed bat, Hipposideros armiger across nine populations from South China using geometric morphometrics. We found significant differences in skull size and shape among the nine populations and found the most obvious differences between populations from Simao in Yunnan Province and from Lingshui in Hainan Province. Results of multivariate regression analysis showed that both the variation in skull size and shape were associated with the variation in climatic factors across sampling localities. With increases of mean annual temperature, mean annual precipitation and mean annual humidity, the skull increases in size. The shape of the upper jaw, teeth, masseter kinsertion and the cochlea in the skull have changed. In addition, the skull size is positively related with altitude and the skull shape is related to latitude. Our results suggest that adaptation to local ecological conditions partially promotes the geographical variation in skull morphology of H. armiger in China.