Figure 3.
Correlation between progressive motility and DNA fragmentation in both dog and human sperm. Values from 32 sperm assessments (16 treatments, two time points). Each point represents a different sperm culture equating to a total n = 352 [dog] and n = 288 [human]. Colours denote culture media constituents to demonstrate spread: Control (black), DEHP (red), PCB153 (blue) and mixture (green). Dog (i, n = 352): Control; p < 0.05, r = −0.527, n = 22; DEHP; p < 0.05, r = −0.2862, n = 66; PCB153; p < 0.01, r = −0.3276, n = 66; Mixture; p < 0.0001, r = −0.2826, n = 198; vs Human (ii, n = 288): Control; p > 0.05, r = −0.4374, n = 18; DEHP; p < 0.05, r = −0.3118, n = 54; PCB153; p < 0.05, r = −0.2994, n = 54; Mixture; p < 0.0001, r = −0.4037, n = 162]. Confidence bands (95%) plotted for visual purposes only. Progressive motility based on WHO pre-2010 where sperm swimming grades a and b are combined: ≥5 µm/s.