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. 2014 May 7;9(5):e96639. doi: 10.1371/journal.pone.0096639

Figure 2. Sexually experienced males out-perform naive rivals.

Figure 2

In competitive assays, the behaviors of each male were quantified. (a) courtship index, (b) wing extension frequency, (c) wing extension duration, and (d) abdomen bend frequency for each male in a competitive mating assay (two males plus a receptive female). *p<0.01. Error bars denote mean ± s.e.m. values.