Table 1.

Summary of 20 electromyographic variables across three behaviours in O. mykiss and two behaviours in S. jardinii

Rake Strike Chew
VariableO. mykissS. jardiniiO. mykissS. jardiniiO. mykiss
Relative onset timing relative to EP onset (ms)
   SH relative onset25.73±3.61–32.31±3.43–23.79±6.220.26±1.30–5.76±2.88
   PH relative onset–91.82±5.88–92.70±7.6192.89±11.349.31±2.6561.46±5.49
   AM relative onset–61.19±3.50–65.36±6.9951.79±4.8414.86±4.1032.24±2.33
   HP relative onset25.38±2.42–16.62±3.81–5.82±3.22–0.52±0.77–2.00±0.60
Activity duration (ms)
   SH duration41.08±3.8479.83±5.2092.39±10.2638.28±4.7534.46±3.72
   PH duration88.32±5.37129.64±7.82136.36±21.8951.24±5.18100.25±9.05
   AM duration81.67±3.8698.27±6.98182.36±25.0290.56±11.07110.91±10.53
   EP duration49.81±1.5945.36±2.0254.04±4.8737.75±4.5827.53±2.16
   HP duration28.32±2.8161.64±4.1067.41±8.0635.83±4.2628.55±2.29
Corrected mean amplitude (mV ratio)
   SH mean amplitude0.06±0.010.04±0.010.12±0.020.13±0.030.11±0.01
   PH mean amplitude0.12±0.020.11±0.010.06±0.010.09±0.020.10±0.01
   AM mean amplitude0.09±0.010.09±0.010.08±0.010.11±0.010.07±0.01
   EP mean amplitude0.07±0.010.11±0.010.10±0.010.12±0.020.10±0.01
   HP mean amplitude0.10±0.010.02±0.000.09±0.010.15±0.010.08±0.01
Integrated area (mV*s)
   SH integrated area0.48±0.071.61±0.483.21±0.531.23±0.191.32±0.18
   PH integrated area5.06±0.738.52±0.882.15±0.482.85±0.574.23±0.57
   AM integrated area5.12±0.763.92±0.558.97±2.078.61±2.075.27±0.75
   EP integrated area1.37±0.183.06±0.221.78±0.312.45±0.231.10±0.15
   HP integrated area0.62±0.040.89±0.111.01±0.123.99±0.700.68±0.09
Total duration of behaviour (ms)159.99±32.00150.51±30.10274.33±54.87109.97±21.99176.40±35.28
  • For explanation of variables, see text. Total duration of rake cycle was not used for parametric analyses

    Values are means ± s.e.m.