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Fig. 3 | BMC Ecology

Fig. 3

From: Experimental ListeriaTetrahymenaAmoeba food chain functioning depends on bacterial virulence traits

Fig. 3

Characteristics of A. proteus population changes in the food chain ListeriaTetrahymena pyriformisA. proteus dependent of whether saprophytic or virulent Listeria was used to feed the intermediate consumer, T. pyriformis. a Rates of changes in amoebal population stimulated by introduction of T. pyriformis which were fed with bacteria. Lm: T. pyriformis were fed with virulent L. monocytogenes; Li.: T. pyriformis were fed with saprophytic L. innocua. b Intracellular bacteria within of A. proteus that grazed on T. pyriformis which were fed with the wild type L. monocytogenes EGDe strain (diamonds) or with saprophytic L. innocua NCTC10288 strain (squares). c, e—The intermediate consumer T. pyriformis fed with L. monocytogenes; d, f—The intermediate consumer T. pyriformis fed with L. innocua. c, d—Morphology of A. proteus that grazed on T. pyriformis which were fed with L. monocytogenes EGDe or with L. innocua NCTC10288 strain. e, f—Counts of A. proteus with hungry and spherical morphology per viewing field at 1, 3, and 24 h post introduction of T. pyriformis. The data from three independent experiment were used. *p < 0.05; **p < 0.01

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