FIG. 1.

Phylogram representing 1 of 2,948 equally most parsimonious hypotheses resulting from analysis of 16S rRNA gene sequences of Photobacterium strains (111 informative characters; length = 291; consistency index [CI] = 0.790; retention index [RI] = 0.895). A strict consensus of these hypotheses results in unresolved polytomies in the P. leiognathi clade and the clade comprising P. iliopiscarium, P. phosphoreum, and the C. albatrossis symbionts. Numbers above branches are Bremer support, and numbers below the branches are jackknife resampling values; dashes represent values less than 50%. For strain and host species information, see Table 1.