<i>msh</i> operon data.

<p>Colonization assays 48-hour post-infection of juvenile (A) <i>Euprymna scolopes</i> and (B) <i>Euprymna tasmanica</i> by their respective wild-type (ES114 or ETJB1H), mutant, and complement strains of <i>msh</i> genes for <i>Vibrio fischeri</i>. Infection efficiency data is plotted as the log values of the relative competitiveness index (RCIs), calculated by dividing the ratio of mutant to wild-type by the starting ratio <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0101691#pone.0101691-Hussa1" target="_blank">[28]</a>. If the RCI is <1 the mutant strain was outcompeted by the wild-type, the wild-type strain was outcompeted by the mutant if the value is >1, and a RCI equal to 1 indicates no competitive difference. Data points represent individual animals and the position of the figures on the y axis is merely for spacing. Vertical line represents the median value of each data plot.