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Table 2 Principal components of meristic traits of all Iberian Barbus and Luciobarbus samples

From: Semi-permeable species boundaries in Iberian barbels (Barbus and Luciobarbus, Cyprinidae)

Trait

PC1

PC2

LL

0.268

−0.544

TRA

0.332

−0.484

TRB

0.408

−0.375

IOC

−0.447

−0.370

SOC

−0.463

−0.311

POMC

−0.486

−0.313

Eigenvalue

2.76

2.05

Variance

46.0 %

34.1 %

  1. Loadings of each original variable in components 1 and 2, eigenvalues and percentage of variance explained. LL: number of scales along the lateral line; TRA: number of scales in transverse rows above the LL; TRB: number of scales in transverse rows below the LL; SOC: supraorbital canal pores, IOC: infraorbital canal pores; POMC: preopercular-mandibular canal pores