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Table 2 Genus x site mean vector (Figure 4 B) statistics for each genus

From: Trophic diversity in the evolution and community assembly of loricariid catfishes

Genus Mean vector (μ) Length of mean vector (r) Concentration Circular variance Circular standard deviation Rayleigh's Z (P) Rao's spacing test (P)
Astroblepidae
 Astroblepus 58° 0.83 0.86 0.17 35° 0.128
Loricariidae
Hypoptopomatinae
 Hypoptopoma 254° 0.34 0.00 0.66 85° 0.837
Hypostominae
Ancistrini
 Ancistrus 189° 0.53 1.05 0.47 65° 0.08 0.50 > P > 0.10
 Baryancistrus 28° 0.44 0.48 0.56 73° 0.487 0.90 > P > 0.50
 Chaetostoma* 180° 0.88 2.54 0.12 29° 0.004 < 0.01
 Dekeyseria 271° 1.00 0.512
 Etsaputu 96° 0.74 0.23 0.26 45° 0.392
 Hemiancistrus 62° 0.68 1.68 0.32 50° 0.094 0.50 > P > 0.10
 Hopliancistrus 63° 0.31 0.00 0.69 88° 0.864
 Hypancistrus* 141° 0.93 2.79 0.07 22° 0.02 < 0.05
 Lasiancistrus 194° 0.46 0.55 0.54 71° 0.458 0.50 > P > 0.10
 Leporacanthicus 128° 0.92 0.66 0.08 23° 0.202
 Lithoxus 70° 1.00 0.512
 Panaque 84° 0.53 0.92 0.47 65° 0.258 0.50 > P > 0.10
 Peckoltia 76° 0.46 0.66 0.54 71° 0.362 0.50 > P > 0.10
 Pseudacanthicus 110° 1.00 0.512
 Pseudancistrus 36° 0.76 0.98 0.24 42° 0.093 0.10 > P > 0.05
 Pseudolithoxus 94° 0.94 2.44 0.06 20° 0.056
 Scobinancistrus 149° 1.00 0.512
 Spectracanthicus 86° 1.00 0.512
Hypostomini
 H. cochliodon grp. 263° 0.20 0.00 0.80 103° 0.713 0.99 > P > 0.95
 H. plecostomus grp.* 307° 0.60 1.41 0.40 58° 0.005 < 0.01
Pterygoplichthyini
 Pterygoplichthys 254° 0.73 0.22 0.27 45° 0.399
Loricariinae
Farlowellini
 Farlowella 222° 0.54 0.76 0.46 64° 0.459
Harttiini
 Harttia 1.00 152.99 0.00 0.137
 Lamontichthys 174° 1.00 0.512
 Sturisoma 227° 0.70 0.20 0.30 48° 0.432
Loricariini
 Limatulichthys 294° 0.83 0.89 0.17 35° 0.124
 Loricaria 331° 0.66 1.56 0.34 52° 0.111 0.10 > P > 0.05
 Loricariichthys 356° 0.89 0.49 0.11 27° 0.229
 Pseudoloricaria 331° 1.00 0.512
 Rineloricaria 354° 0.51 0.84 0.49 67° 0.289 0.10 > P > 0.05
 Spatuloricaria 93° 0.24 0.00 0.76 97° 0.732 0.10 > P > 0.05
  1. Significance of mean vectors determined by Rayleigh's Z and uniformity of vector distribution measured by Rao's Spacing test. Taxa with significant mean vectors designated with * (P < 0.05) or † (0.10 > P > 0.05). Total number of vectors = 120 (Figure 3C).