Table 2. Statistics of the effects of peristome wetting on friction force in O. smaragdina (Wilcoxon's signed rank tests; Bonferroni correction applied for multiple testing; P corrected = 4 × P)
Tarsus Pulling direction nzPcorrected
Intact Inward 22 4.107 <0.001
Intact Outward 22 4.074 <0.001
No arolium Inward 27 1.586 >0.1
No arolium Outward 27 2.354 0.074
No claws Inward 19 3.823 <0.001
No claws Outward 19 3.724 <0.001