Table 4.
Principal Component Analysis of male traits
| PCA 1 | PCA 2 | PCA 3 | r2 | p-value | |
|---|---|---|---|---|---|
| eigenvalue |
3.72 |
2.50 |
1.93 |
|
|
| explained variance |
33.86 |
22.77 |
17.57 |
|
|
| cumulative variance |
33.86 |
56.63 |
74.20 |
|
|
| success rate correlation |
|
|
|
|
|
| contact males |
−0.37 |
−0.60 |
−0.71 |
0.56 |
0.12 |
| all males |
−0.13 |
−0.99 |
−0.023 |
0.30 |
0.46 |
| contribution of traits to dimensions: |
|
|
|
|
|
| call duration [s] |
12,29 |
15,94 |
0,09 |
|
|
| pulse rate [pulse/ms] |
14,37 |
9,75 |
0,71 |
|
|
| frequency [kHz] |
3,18 |
18,48 |
11,55 |
|
|
| call rate [calls/s] |
12,54 |
3,57 |
3,91 |
|
|
| number of pulses |
21,36 |
1,51 |
0,68 |
|
|
| duty cycle [s/s] |
0,95 |
31,19 |
1,33 |
|
|
| SVL [mm] |
12,15 |
0,23 |
1,44 |
|
|
| weight [g] |
5,08 |
3,75 |
32,51 |
|
|
| condition [g] |
0,54 |
2,01 |
39,91 |
|
|
| territory size [m2] |
1,53 |
12,99 |
0,48 |
|
|
| calling activity [periods/day] | 16,02 | 0,55 | 7,39 |
PCA 1–3 are the first three dimensions obtained from our analysis. Beside the typical PCA statistics, correlation score with success-rate are indicated for each dimension and with a combined r2 and p-value in the upper part of the table. Percental contributions of male traits to PCA dimensions are listed in the lower part of the table.