Differences between Mmd and Mmm in sperm component size.

<p>Sperm head length (A), sperm head width (B), midpiece length (C), and tail length (D). Individual wild-derived strains are marked separately on the left side of the graphs while subspecies-specific strains are put together on the right side of the graphs. The same upper-case letters indicate similarity of sperm components between subspecies and strains in the Tukey <i>post hoc</i> test comparison. Error bars represent 95% confidence intervals.