Figure 3.

Relation between sperm velocity and sperm head/flagellum ratio in eutherian mammals. Relations were examined between sperm straight-line swimming velocity (μm/s) and the proportion between sperm head length (μm) and sperm total flagellum length (μm), in 19 species of eutherian mammals.

Tourmente et al. BMC Evolutionary Biology 2011 11:12   doi:10.1186/1471-2148-11-12
Download authors' original image