FIG 2 .
Percent survival of channel catfish or grass carp after challenge with A. hydrophila strain ML09-119, ZC1, or AL06-06. Significant differences in survival were observed for bacterial strains ML09-119, ZC1, and AL06-06 (P < 0.0001) and between fish species in the ML09-119 group (P = 0.0126). No interaction effect between variables of bacterial strains and fish species was observed (Pfish species × bacterial strains = 0.1002). The difference in survival between channel catfish and grass carp injected with ML09-119 was significant (P = 0.0069). No significant differences in survival between channel catfish and grass carp intraperitoneally injected with ZC1 or AL06-06 were observed, but there was a significant difference between strains ZC1 and AL06-06 in both channel catfish (P = 0.0075) and grass carp (P = 0.0089).