Table 1 Eigenvalues for inner ear structures.
From: Quantitative assessment of inner ear variation in elasmobranchs
Structure | PC loadings | ||
|---|---|---|---|
PC1 | PC2 | PC3 | |
A. Linear measurements (n = 26) | |||
 Total ear size | − 0.995 | 0.090 | − 0.013 |
 Saccule | − 0.983 | 0.185 | − 0.010 |
 Lagena | − 0.972 | − 0.170 | − 0.144 |
 Utricle | − 0.960 | − 0.214 | 0.143 |
 Mean canal diameter | − 0.845 | 0.108 | 0.327 |
 Mean ampulla diameter | − 0.824 | − 0.034 | 0.491 |
 Standard deviation | 0.062 | 0.010 | 0.008 |
 Proportion variance | 0.947 | 0.027 | 0.017 |
 Cumulative variation | 0.947 | 0.974 | 0.991 |
 Lambda (λ) | 0.455 | – | – |
B. Volume measurements (n = 10) | |||
 Total ear volume | − 0.997 | 0.084 | 0.024 |
 Saccule | − 0.983 | 0.159 | − 0.088 |
 Lagena | − 0.991 | − 0.087 | − 0.075 |
 Utricle | − 0.960 | − 0.275 | − 0.015 |
 Macula neglecta | − 0.996 | − 0.016 | 0.082 |
 Semi− circular canals | − 0.991 | 0.065 | 0.120 |
 Standard deviation | 0.152 | 0.021 | 0.012 |
 Proportion variance | 0.974 | 0.019 | 0.006 |
 Cumulative variation | 0.974 | 0.993 | 0.999 |
 Lambda (λ) | 0 | – | – |
