Fig. 6From: Relative compatibility of Schistosoma mansoni with Biomphalaria sudanica and B. pfeifferi from Kenya as assessed by PCR amplification of the S. mansoni ND5 gene in conjunction with traditional methodsComparison of infection status for B. sudanica and B. pfeifferi at various times post-exposure. B. sudanica indicated by B.s. and solid bars; B. pfeifferi indicated by B. p. and bars with diagonal stripes. Green = PCR positive snails at 1–4 dpe; blue = PCR positive, dissection positive snails; yellow = PCR positive, dissection negative snails; pink = snails shedding S. mansoni at 40 dpe. 1–4 dpe, no significant difference in S. mansoni infection rates (p = 0.052) between B. pfeifferi and B. sudanica; 8–24 dpe, significant different in successful parasite infection rates (those that are both dissection and PCR positive) between B. pfeifferi and B. sudanica (p = 0.008); at 40 dpe, significant difference in S. mansoni infection rates (including those both dissection and PCR positive, and those shedding) between two species (p < 0.001), including with more B. pfeifferi shedding cercariae than for B. sudanica Back to article page