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Table 1.

The phase shift between the contractions of different organ pairs

Mantle
Point A (AVC)
AnimalExpansion - gill maximumContraction - gill minimumContraction - Point B (AVC) contractionExpansion - mantle expansionContraction - mantle expansion
11 −62.4 (N=4, r2=0.978, P<0.001) −135.4 (N=4, r2=0.761, P<0.05) 88.3 (N=4, r2=0.882, P<0.02) −48.3 (N=4, r2=0.902, P<0.01) 129.3 (N=4, r2=0.968, P<0.01) 
12 −118.0 (N=3, r2=0.996, P<0.01) −149.1 (N=3, r2=0.955, P<0.02) 89.4 (N=4, r2=0.949, P<0.01) −153.4 (N=4, r2=0.310, NS) −1.3 (N=4, r2=0.930, P<0.01) 
17 −144.9 (N=4, r2=0.982, P<0.001) −161.6 (N=4, r2=0.942, P<0.01) 119.9 (N=4, r2=0.980, P<0.001) −96.0 (N=4, r2=0.746, P<0.05) 44.4 (N=4, r2=0.944, P<0.01) 
22 −139.6 (N=4, r2=0.857, P<0.02) −156.4 (N=4, r2=0.766, P<0.05) 59.6 (N=2, r2=0.975) −156.0 (N=2, r2=0.917) 31.2 (N=2, r2=0.578) 
26 Mantle movements not visible Mantle movements not visible 74.1 (N=4, r2=0.898, P<0.01) Mantle movements not visible Mantle movements not visible 
Average phase shift −117.9 −150.7 86.1 −115.7 45.5 
r2 between cuttlefish 0.717 0.971 0.884 0.518 0.477 
P <0.05 <0.01 <0.01 NS NS 
Mantle
Point A (AVC)
AnimalExpansion - gill maximumContraction - gill minimumContraction - Point B (AVC) contractionExpansion - mantle expansionContraction - mantle expansion
11 −62.4 (N=4, r2=0.978, P<0.001) −135.4 (N=4, r2=0.761, P<0.05) 88.3 (N=4, r2=0.882, P<0.02) −48.3 (N=4, r2=0.902, P<0.01) 129.3 (N=4, r2=0.968, P<0.01) 
12 −118.0 (N=3, r2=0.996, P<0.01) −149.1 (N=3, r2=0.955, P<0.02) 89.4 (N=4, r2=0.949, P<0.01) −153.4 (N=4, r2=0.310, NS) −1.3 (N=4, r2=0.930, P<0.01) 
17 −144.9 (N=4, r2=0.982, P<0.001) −161.6 (N=4, r2=0.942, P<0.01) 119.9 (N=4, r2=0.980, P<0.001) −96.0 (N=4, r2=0.746, P<0.05) 44.4 (N=4, r2=0.944, P<0.01) 
22 −139.6 (N=4, r2=0.857, P<0.02) −156.4 (N=4, r2=0.766, P<0.05) 59.6 (N=2, r2=0.975) −156.0 (N=2, r2=0.917) 31.2 (N=2, r2=0.578) 
26 Mantle movements not visible Mantle movements not visible 74.1 (N=4, r2=0.898, P<0.01) Mantle movements not visible Mantle movements not visible 
Average phase shift −117.9 −150.7 86.1 −115.7 45.5 
r2 between cuttlefish 0.717 0.971 0.884 0.518 0.477 
P <0.05 <0.01 <0.01 NS NS 

Significance was only determined for sample sizes greater than 2.

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