Exposure to bacterial signals does not alter pea aphids' survival upon a second challenge or investment in production of winged offspring.

Results Immune Priming and Serratia Marcescens Infections For Experiment 1 ( Figure 1A, B ), the minimal model indicated a marginally non-significant interaction between aphid genotype, pre-exposure, and infection treatment upon second challenge (p = 0.05), which is reflected by the somewhat different responses of the two aphid genotypes (5A0, LSR1) to pre-exposure and subsequent live bacterial challenge ( Figure 1A,B ).

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