Table 2.

Results of a factor analysis (varimax rotation) performed on the kinematic data before transection to explore modulation of prey transport kinematics in function of food type

1 (31.25%)2 (27.29%)3 (17.34%)4 (15.55%)
Prey transport duration (s) 0.930 –0.068–0.0840.311
Duration of the slow open phase (s)0.649–0.146–0.6380.211
Duration of the fast open phase (s)0.0320.041 0.972 0.078
Duration of the fast close phase (s)0.0910.1040.016 0.977
Duration of the slow close phase (s) 0.938 0.1010.022–0.158
Gape distance (mm)0.560 0.705 0.1580.326
Jaw opening velocity (mm s–1)0.022 0.907 0.0300.090
Jaw closing velocity (mm s–1)–0.111 0.902 0.039–0.044
  • Four factors were retained in the analysis that jointly explained 91.43% of the variation in prey transport kinematics

    Factor loadings greater than 0.7 are indicated in bold. The proportion of variation explained is given in parentheses and eigenvalues are listed below the respective factor scores