Skip to main content

Advertisement

Table 4 ANCOVA for canal diameter and neuromast size in the SO and MD canals combined in Tramitichromis and Aulonocara

From: Heterochrony, modularity, and the functional evolution of the mechanosensory lateral line canal system of fishes

  N R2 F d.f. P-value
Canal diameter ( Tramitichromis ) 175 0.67    
SL    348.0619 1, 171 <.0001
Canal    5.0408 1, 171 0.026
SL x Canal    0.3324 1, 171 0.5650
Canal diameter ( Aulonocara ) 183 0.77    
SL    582.8945 1, 179 <.0001
Canal    5.708 1, 179 0.0179
SL x Canal    3.1312 1, 179 0.0785
  N R 2 F d.f. P -value
Neuromast length ( Tramitichromis ) 180 0.74    
SL    338.8333 1, 176 <.0001
Canal    149.0871 1, 176 <.0001
SL x Canal    0.3759 1, 176 0.5406
Neuromast length ( Aulonocara ) 209 0.73    
SL    487.6754 1, 205 <.0001
Canal    54.3751 1, 205 <.0001
SL x Canal    2.4841 1, 205 0.1165
  N R 2 F d.f. P -value
Neuromast width ( Tramitichromis ) 180 0.89    
SL    1362.844 1, 176 <.0001
Canal    76.2438 1, 176 <.0001
SL x Canal    0.2324 1, 176 0.6304
Neuromast width ( Aulonocara ) 209 0.88    
SL    1441.915 1, 205 <.0001
Canal    16.9214 1, 205 <.0001
SL x Canal    0.4012 1, 205 0.5272
  1. Analysis was carried out for supraorbital (SO) and mandibular (MD) canals combined in Tramitichromis and in Aulonocara. SL = Standard length (fish size) in mm. All data were normally distributed. Significance = P <0.05. The interaction terms in these ANCOVAs were significant, so the Johnson-Neyman technique was not used. See Figure 12 and Table 2 for ANOVA results and individual regressions.