Figure 2
From: Extreme climate event promotes phenological mismatch between sexes in hibernating ground squirrels

Male Richardson’s ground squirrels (Urocitellus richardsonii) at the Assiniboine Park Zoo in Winnipeg, Canada were analyzed for differences among years (2010, 2012, and 2014) and between those with motile sperm and those with non-motile sperm in 2012. We measured body mass (a), testes mass (b), prostate mass (c), seminal vesicles mass (d), Cowper’s gland mass (e).