Fig. 1 in Altitudinal Variation Of Skull Size In Daurian Pika (Ochotona Daurica Pallas, 1868)

Fig. 1. Skull measurements of Daurian pika (Ochotona daurica) vary with altitude, where GLC stands for greatest length of skull, MB for mastoid breadth and NL for nasal length. The entire measurement unit was millimetre (mm) except the skull size, which was centimeter cube (cm3). The results indicate that all of the measurements are negatively correlated with altitude, for skull size: r = –0.420, P <0.001, n = 123; for GLC: r = –0.565, P <0.001, n = 123; for MB: r = –0.191, P = 0.031,