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. Author manuscript; available in PMC: 2013 Feb 1.
Published in final edited form as: Evolution. 2011 Sep 20;66(2):363–374. doi: 10.1111/j.1558-5646.2011.01433.x

Figure 3.

Figure 3

Maximal fitnesses (doublings/hr) seen in T7 and SP6 adapted to the hosts E. coli and Salmonella enterica. The normal host for T7 is E. coli, for SP6 is Salmonella enterica. There is a strong and similar effect of normal versus novel host for both phages, indicated by the parallel declines in fitness on the novel host. There is also a superiority of T7 over SP6 when host type is held constant. T7 and SP6 are both members of the Podoviridae, but they belong to different genera within the subfamily Autographivirinae.