Table 4.
Temporal variation in within-male variability in sperm traits of Tupinambis
| Reproductive period |
||||||
|---|---|---|---|---|---|---|
| Species | Sperm traits | October | November | December | Statistic | P |
| T. merianae (n = 72) | CV Head length | 7.30 ± 2.12 | 6.99 ± 2.28 | 0.76 | 0.3827 | |
| CV Midpiece length | 9.81 ± 1.69 | 9.61 ± 2.36 | 0.25 | 0.6162 | ||
| CV Flagellum length | 5.59 ± 1.65 | 5.15 ± 2.17 | 1.11 | 0.2923 | ||
| CV Total sperm length | 4.37 ± 1.22 | 4.11 ± 1.16 | 0.41 | 0.5209 | ||
| T. rufescens (n = 41) | CV Head length | 8.35 ± 3.29 | 8.87 ± 2.62 | 6.38 ± 1.76 | 12.68 | 0.0018 |
| CV Midpiece length | 12.67 ± 2.47 | 11.58 ± 2.28 | 10.82 ± 2.08 | 3.77 | 0.1520 | |
| CV Flagellum length | 4.58 ± 1.96 | 6.29 ± 2.64 | 5.50 ± 2.84 | 3.31 | 0.1908 | |
| CV Total sperm length | 3.58 ± 1.44 | 5.49 ± 2.77 | 3.82 ± 1.42 | 6.57 | 0.0374 | |