From: Sperm competition and the evolution of sperm design in mammals
Dependent variable | Predictor | Slope | F | p | λ | r | CLs | n |
---|---|---|---|---|---|---|---|---|
total sperm length | body mass | -8.21 | 1.06 | 0.3044 | 0.999 *, n.s. | 0.07 | -0.06 to 0.20 | 226 |
 | testes mass | 8.24 | 3.99 | 0.0471 |  | 0.13 | 0.00 to 0.26 |  |
head length | body mass | 0.74 | 0.39 | 0.5317 | 0.946 *, n.s. | 0.05 | -0.10 to 0.19 | 194 |
 | testes mass | 0.86 | 6.53 | 0.0114 |  | 0.18 | 0.04 to 0.33 |  |
midpiece length | body mass | -2.63 | 0.14 | 0.7116 | 0.945 *, n.s. | 0.03 | -0.12 to 0.17 | 194 |
 | testes mass | 3.18 | 3.41 | 0.0665 |  | 0.13 | -0.01 to 0.27 |  |
principal piece length | body mass | -7.57 | 2.04 | 0.1547 | 0.956 *, n.s. | 0.10 | -0.04 to 0.25 | 194 |
 | testes mass | 7.32 | 5.62 | 0.0188 |  | 0.17 | 0.03 to 0.31 |  |
total flagellum length | body mass | -8.99 | 0.89 | 0.3456 | 0.999 *, n.s. | 0.07 | -0.07 to 0.21 | 194 |
 | testes mass | 9.61 | 5.32 | 0.0222 |  | 0.16 | 0.02 to 0.31 |  |
head length/head width | body mass | -0.50 | 0.14 | 0.7076 | 0.783 *, * | 0.04 | -0.18 to 0.27 | 79 |
 | testes mass | 0.56 | 5.72 | 0.0193 |  | 0.26 | 0.05 to 0.50 |  |
straight line velocity | body mass | -39.86 | 2.08 | 0.1624 | 0.880 n.s., n.s. | 0.29 | -0.11 to 0.71 | 26 |
 | testes mass | 45.71 | 10.56 | 0.0035 |  | 0.56 | 0.23 to 1.04 |  |
straight line velocity | total sperm length | 0.72 | 29.66 | <0.0001 | <0.001 n.s., n.s. | 0.74 | 0.55 to 1.37 | 26 |
straight line velocity | head length/flagellum length | -635.59 | 10.55 | 0.0047 | <0.001 n.s., n.s. | 0.62 | 0.23 to 1.21 | 19 |