Table 1.

Hypothesized kinematic predictions related to variation in prey properties

Hypothesis categoryKinematic predictions
Increasing prey mass Total trial duration increases
Field cricket vs locustTransport stage duration increases
Mealworm vs superwormNumber of transport cycles increases
Absolute SO phase duration increases
Relative SO phase duration increases
Gape cycle duration increases
Increasing prey hardness Total trial duration increases
Cricket vs field cricketTransport stage duration increases
Waxworm vs mealwormNumber of transport cycles increases
Absolute SC phase duration increases
Relative SC phase duration increases
Gape cycle duration increases
Increasing prey mobility Gape distance decreases
Mealworm vs mealworm beetleNumber of transport cycles increases
Absolute FO phase duration decreases
Relative FO phase duration decreases
Absolute FC phase duration decreases
Relative FC phase duration decreases
Gape cycle duration decreases
  • The prey items that were compared to test the effect of prey mass, prey hardness and prey mobility are given below each specific hypothesis category in left column

    Phase of the gape cycle: SO, slow open; SC, slow close; FO, fast open; FC, fast close