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Table 1 Kinematic variables and series of Mann-Whitney-U tests comparing paedomorphic and metamorphic Alpine newts. Significance level was adjusted to p ≤ 0.0046 after simultaneous Bonferroni correction

From: Same but different: aquatic prey capture in paedomorphic and metamorphic Alpine newts

Variable Paedomorphs Metamorphs Mann-Whitney-U P-Value
Duration gape opening (ms) 22 ± 5.55 30.89 ± 6.44 98.5 <0.001
Duration gape closing (ms) 31.09 ± 7.35 25.5 ± 3.21 187 0.003
Duration gape cycle (ms) 53.09 ± 10.51 56.19 ± 7.15 298.5 0.344
Maximum gape (mm) 2.94 ± 1.3 3.87 ± 0.93 197 0.006
Time to start hyobranchial depression (ms) 1 ± 2.02 4.56 ± 6.41 230.5 0.015
Duration hyobranchial depression (ms) 38 ± 9.82 41.6 ± 10.61 284 0.23
Maximum hyobranchial depression (mm) 1.85 ± 0.47 3.01 ± 0.56 29 <0.001
Duration head elevation (ms) 27.82 ± 9.44 31.81 ± 4.75 198.5 0.006
Maximum head elevation (deg) 16.58 ± 4.84 18.6 ± 4.8 278 0.193
Lateral head expansion (mm) 0.62 ± 0.16 1.18 ± 0.39 50 <0.001
Maximum prey velocity (ms−1) 0.47 ± 0.18 0.49 ± 0.25 347 0.93