Figure 1: Peromyscus sperm morphology.
From: The genetic basis and fitness consequences of sperm midpiece size in deer mice
(a) Scanning electron micrographs of a mature P. maniculatus sperm cell with morphological features labelled. Mean±s.e. of P. maniculatus and P. polionotus sperm (b) head length, (c) head width, (d) total flagellum length and (e) midpiece length (n=10 males; n=10 sperm/male; t-test). Sperm head and width do not differ significantly, yet P. maniculatus total flagellum and midpiece length are significantly longer than those in P. polionotus sperm. Note truncated y axes. NS=P value>0.05.
