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Table 1 Character loadings and percentage of total variance explained for first two component axes extracted from Evolutionary Principal Components Analysis (EPCA)

From: Evolutionary morphology of the rattlesnake style

Character

EPC 1

EPC 2

Relative tail length

-0.07

0.66

Subcaudal Scale Counts

-0.16

0.49

Basal rattle segment height

0.32

0.04

Basal rattle segment width

0.31

0.09

Style 1

0.34

0.30

Style 2

0.31

0.26

Style 3

0.29

-0.29

Style 4

0.31

-0.17

Style 5

0.32

-0.02

Style 6

0.33

-0.05

Style 7

0.29

0.01

Style 8

0.30

0.20

% of total variance explained

75.50

10.44

  1. See Figure 1 for measurements taken from styles.