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. 2012 Apr 11;7(4):e34889. doi: 10.1371/journal.pone.0034889

Figure 4. Estimate of the asymmetric phenotype fitness function z for Calopteryx splendens in relation with wing patch length x.

Figure 4

The maximum is reached for a wing patch length of 17.52 mm. The dashed line represents the optimal genotype predicted by our model that best fits the observed population distribution, i.e. a patch length of 16.93 mm.