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Table 2.

Sexual dimorphism of chela muscle mechanics in Australian slender crayfish(Cherax dispar)

Maximum tetanic force (N)Time to peak twitch force (ms)Time to half peak tetanus (ms)Time from last stimulus to half tetanus relaxation (ms)
Male 1.3±0.04 43.6±5.6 42.4±8.5 168±20.8 
Female 0.69±0.04 25.9±0.3 28.1±3.4 126±9.5 
P <0.001 0.019 0.14 0.10 
Maximum tetanic force (N)Time to peak twitch force (ms)Time to half peak tetanus (ms)Time from last stimulus to half tetanus relaxation (ms)
Male 1.3±0.04 43.6±5.6 42.4±8.5 168±20.8 
Female 0.69±0.04 25.9±0.3 28.1±3.4 126±9.5 
P <0.001 0.019 0.14 0.10 

Data represent means ± s.e.m. N=7 in each case

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