Figure A1: Mating latency of spa males originating from 7 genetically uniform lines, in a monogamous setting with a stockspa female. Group means are displayed inwards relative to single observations, and overlapping vertical bars show one standard error around this mean. The same number of monogamous matings were set up for each genetically uniform line (10); number of single observation thus indicates mating success of males from each line within 2 hours. Line 4 was selected to provide standard sperm donors for sperm competition assays.