Table 2.

Mean values of both vertically and horizontally oriented air particle velocities (p-p) around a vibrating bee, at different distances and directions (i–vi) relative to the vibrating bee

Particle velocity (mm s–1) in directions i–vi
Distance (mm)(i)(ii)(iii)(iv)(v)(vi)F5,55P
Vertically oriented 1*7.7811.9821.4117.5218.48 25.47
2*5.657.5311.0610.0910.18 13.25
3*4.575.497.467.097.02 8.95
4*3.844.325.635.465.36 6.76
53.31a3.58a,b4.72b,c4.86c,d4.67b,c 6.03 d 11.70<0.001
102.001.822.002.021.93 2.02 0.740.60 n.s.
151.331.26 1.41 1.261.291.331.620.17 n.s.
201.111.111.04 1.16 1.071.131.430.23 n.s.
Horizontally oriented 1* 20.84 10.869.9210.689.6610.88
2* 16.22 9.158.278.908.219.17
3* 12.87 7.786.967.507.037.79
4* 10.39 6.675.926.376.076.68
5 8.57 a 5.82b5.16b5.53b5.34b5.83b11.17<0.001
10 3.34 a 2.82a,b2.31b2.57b2.64a,b2.83a,b4.170.003
15 1.98 a 1.76a,b1.48c1.54b,c1.70b,c1.76a,b7.85<0.001
20 1.55 1.441.351.411.361.431.760.14 n.s.
  • See Fig. 1B for details on directions i–vi

    Bold letters emphasize highest values measured at the given distance

    Particle velocities measured at the same distances (⩾5 mm) but in different directions were compared using one-way repeated measures ANOVA (F-values given). Level for significance of difference: Pcorr.⩽0.025. Values in a row that have same superscript letters did not differ significantly from each other (pairwise comparison: Tukey-test, P>0.05); n.s., not significant

  • * Values extrapolated from hyperbolic decay function (see Appendix 2)