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Table 2.

Results of ANOVAs performed separately on each crossing region variable

3-way (perch and tunnel)
Variable2-way, 0° (perch) Diameter d.f.=6,182-way, 1.6 cm (perch) Incline d.f.=4,12Surface d.f.=1,3`Diameter' d.f.=4,12Surface × diameter d.f.=4,12
Ncr,max 19.3 (<0.001) 9.4 (0.001) 208 (<0.001) 108 (<0.001) 45.6 (<0.001) 
Ncr,min 26.7 (<0.001) 7.9 (0.002) 4.5 (0.124) 28.0 (<0.001) 6.2 (0.006) 
ΔNcr 0.7 (0.676) 2.5 (0.098) 78.0 (0.003) 27.1 (<0.001) 21.3 (<0.001) 
Vx,cr 3.1 (0.030) 1.6 (0.236)    
dcr 1.1 (0.418) 5.7 (0.008) 33.9 (0.010) 1.3 (0.337) 5.6 (0.009) 
αcr 16.5 (<0.001) 2.2 (0.134) 43.7 (0.007) 141 (<0.001) 14.3 (<0.001) 
3-way (perch and tunnel)
Variable2-way, 0° (perch) Diameter d.f.=6,182-way, 1.6 cm (perch) Incline d.f.=4,12Surface d.f.=1,3`Diameter' d.f.=4,12Surface × diameter d.f.=4,12
Ncr,max 19.3 (<0.001) 9.4 (0.001) 208 (<0.001) 108 (<0.001) 45.6 (<0.001) 
Ncr,min 26.7 (<0.001) 7.9 (0.002) 4.5 (0.124) 28.0 (<0.001) 6.2 (0.006) 
ΔNcr 0.7 (0.676) 2.5 (0.098) 78.0 (0.003) 27.1 (<0.001) 21.3 (<0.001) 
Vx,cr 3.1 (0.030) 1.6 (0.236)    
dcr 1.1 (0.418) 5.7 (0.008) 33.9 (0.010) 1.3 (0.337) 5.6 (0.009) 
αcr 16.5 (<0.001) 2.2 (0.134) 43.7 (0.007) 141 (<0.001) 14.3 (<0.001) 

Values are F (P). Subscript cr denotes crossing regions,and N, Vx, d and α are the number, mean forward velocity, distance and angle of crossing regions, respectively. PrefixΔ indicates change within one cycle. max and min denote maximum and minimum values observed within a cycle

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