Table 5.
Relationship between sperm straight line velocity and sperm morphometric traits in Tupinambis
| Species | Dependent variable | Predictor | Slope | F | P |
|---|---|---|---|---|---|
| T. merianae (n = 66) | VSL (μm/sec) | Head length (μm) | −1.17 | 0.01 | 0.9196 |
| Midpiece length (μm) | −8.61 | 11.82 | 0.0011 | ||
| Flagellum length (μm) | −0.45 | 0.63 | 0.4300 | ||
| Flagellum: head ratio | −0.06 | 0.000052 | 0.9819 | ||
| Flagellum:midpiece ratio | 2.8 | 7.35 | 0.0086 | ||
| Head: midpiece ratio | 5.59 | 3.54 | 0.0545 | ||
| T. rufescens (n = 37) | VSL (μm/sec) | Head length (μm) | −0.59 | 4.00E-02 | 0.8388 |
| Midpiece length (μm) | −5.63 | 4.93 | 0.0334 | ||
| Flagellum length (μm) | 1.99 | 5.1 | 0.0307 | ||
| Flagellum: head ratio | 0.31 | 0.03 | 0.8752 | ||
| Flagellum: midpiece ratio | 2.76 | 5.75 | 0.022 | ||
| Head: midpiece ratio | 3.59 | 1.16 | 0.289 |