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Table 1 Numbers of individuals and assemblages sampled for each genus, with data and statistics on individual-based vector means for each genus (Additional file 2 : Figure S1)

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

Genus Individuals Assemblages 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* 6 3 52° 0.74 1.27 0.26 45° 0.031 < 0.05
Loricariidae
Hypoptopomatinae
 Hypoptopoma 7 2 274° 0.22 0.00 0.78 99° 0.722 0.90 > P > 0.50
Hypostominae
Ancistrini
 Ancistrus* 44 9 192° 0.45 0.99 0.56 73° 0.000 < 0.01
 Baryancistrus 23 4 14° 0.32 0.67 0.68 87° 0.098 < 0.01
 Chaetostoma* 44 5 179° 0.68 1.88 0.32 51° 0.000 < 0.01
 Dekeyseria 2 1 271° 1.00 20.46 0.00 0.139
 Etsaputu* 12 2 120° 0.59 1.36 0.41 59° 0.012 < 0.01
 Hemiancistrus* 51 5 60° 0.46 1.03 0.54 72° 0.000 < 0.01
 Hopliancistrus 5 1 86° 0.31 0.02 0.69 88° 0.650 0.50 > P > 0.10
 Hypancistrus* 25 4 157° 0.88 4.62 0.12 28° 0.000 < 0.01
 Lasiancistrus* 17 4 174° 0.57 1.38 0.43 61° 0.003 < 0.05
 Leporacanthicus* 12 2 136° 0.68 1.82 0.32 50° 0.002 < 0.01
 Lithoxus 2 1 69° 0.97 1.90 0.03 13° 0.158
 Panaque* 41 5 343° 0.34 0.72 0.66 84° 0.008 < 0.01
 Peckoltia* 15 5 113° 0.64 1.59 0.36 55° 0.001 < 0.01
 Pseudacanthicus 1 1 110° 1.00 0.512
 Pseudancistrus* 32 4 53° 0.75 2.34 0.25 44° 0.000 < 0.01
 Pseudolithoxus* 24 3 108° 0.50 1.16 0.50 67° 0.002 0.10 > P > 0.05
 Scobinancistrus 2 1 149° 0.99 6.29 0.01 0.143
 Spectracanthicus 4 1 86° 0.69 1.72 0.31 49° 0.148 0.50 > P > 0.10
Hypostomini
 H. cochliodon grp.† 30 7 329° 0.30 0.63 0.70 89° 0.063 < 0.05
 H. plecostomus grp.* 97 14 302° 0.19 0.39 0.81 104° 0.028 < 0.05
Pterygoplichthyini
 Pterygoplichthys 2 2 254° 0.73 0.22 0.27 45° 0.396
Loricariinae
Farlowellini
 Farlowella 4 3 251° 0.51 0.77 0.49 66° 0.376 0.50 > P > 0.10
Harttiini
 Harttia* 14 2 0.98 18.40 0.02 12° 0.000 < 0.01
 Lamontichthys* 10 1 174° 0.97 12.64 0.03 14° 0.000 < 0.01
 Sturisoma* 16 2 187° 0.65 1.74 0.35 53° 0.001 < 0.01
Loricariini
 Limatulichthys 20 3 304° 0.25 0.51 0.75 96° 0.299 < 0.01
 Loricaria 10 5 339° 0.36 0.50 0.64 82° 0.289 0.90 > P > 0.50
 Loricariichthys 5 2 0.55 1.01 0.45 63° 0.231 0.50 > P > 0.10
 Pseudoloricaria 3 1 331° 0.93 2.01 0.07 22° 0.062
 Rineloricaria* 52 5 313° 0.26 0.54 0.74 94° 0.030 < 0.01
 Spatuloricaria 17 6 90° 0.21 0.42 0.80 102° 0.497 < 0.01
  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 = 649 (Figure 3A).