Fig. 3.

MA plot comparing protein abundances between the house and Spanish sparrow seminal fluid proteomes. Differential abundance analysis for proteins identified in both species revealed 61 significant proteins after Benjamini–Hochberg multiple testing correction. Proteins of significantly greater abundance in the house sparrow are shown in blue, whereas proteins of significantly greater abundance in the Spanish sparrow are shown in red, and nonsignificant proteins are in gray. Proteins with P values <0.001 have been labeled with protein names.