Table 1 For body mass classes: absolute force, mean ± SD (mN), obtained during measurements in both directions (vertical up, vertical down, horizontal posterior, horizontal anterior), and relative force I, mean ± SD (mN/g), with results from Kruskal–Wallis test, and quantity of evaluated radular force measurements (see also Fig. 4).
From: Radular force performance of stylommatophoran gastropods (Mollusca) with distinct body masses
Body mass classes | Direction | Absolute force, mN | Kruskal–Wallis test | Relative force I, mN/g | Kruskal–Wallis test | Quantity of evaluated force measurements | ||
|---|---|---|---|---|---|---|---|---|
Mean | ± SD | Mean | ± SD | |||||
Large sized individuals | All | 73.96 | 62.49 | 0.84 | 0.74 | 1025 | ||
Vertical up | 147.35 | 41.35 | p < 0.0001, ChiSquare: 744.5827, df: 3 | 1.69 | 0.54 | p < 0.0001, ChiSquare: 750.5548, df: 3 | 372 | |
Vertical down | − 22.77 | 17.79 | 0.25 | 0.21 | 107 | |||
Horizontal posterior | 38.82 | 19.49 | 0.43 | 0.20 | 323 | |||
Horizontal anterior | − 26.97 | 2.91 | 0.30 | 0.13 | 223 | |||
Medium sized individuals | All | 41.44 | 49.18 | 2.47 | 2.94 | 2581 | ||
Vertical up | 14.72 | 10.40 | p < 0.0001, ChiSquare: 1928.4320, df: 3 | 0.92 | 0.65 | p < 0.0001, ChiSquare: 1855.5616, df: 3 | 988 | |
Vertical down | − 3.94 | 2.30 | 0.24 | 0.17 | 440 | |||
Horizontal posterior | 74.52 | 49.76 | 4.28 | 2.65 | 536 | |||
Horizontal anterior | − 82.22 | 55.10 | 4.98 | 3.59 | 617 | |||
Small sized individuals | All | 14.46 | 24.49 | 6.01 | 8.40 | 801 | ||
Vertical up | 1.48 | 0.72 | p < 0.0001, ChiSquare: 636.3539, df: 3 | 0.85 | 0.51 | p < 0.0001, ChiSquare: 625.8867, df: 3 | 200 | |
Vertical down | − 0.86 | 0.44 | 0.50 | 0.28 | 210 | |||
Horizontal posterior | 39.56 | 35.37 | 13.63 | 8.67 | 211 | |||
Horizontal anterior | − 15.34 | 7.87 | 9.26 | 9.08 | 180 | |||
