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Using high throughput Illumina sequencing technology, we determined complete sequences for the mitochondrial genome (mitogenome) and nuclear ribosomal DNA (rDNA) complex for three African freshwater snail taxa within the genus  Biomphalaria ,  B. pfeifferi ,  B. sudanica  and  B. choanomphala , and for two laboratory strains of  B. glabrata  originating from the Neotropics.  Biomphalaria  snails are obligate vectors of the blood fluke  Schistosoma mansoni , a major etiologic agent of human intestinal schistosomiasis. Our data show that mitogenomes from African and Neotropical  Biomphalaria  are highly conserved. With respect to rDNA, the two internal transcribed spacers (ITS1 and 2) were found to be highly variable whereas the three ribosomal RNA genes (28S, 5.8S and 18S rRNA) exhibited no or very limited variation. Our analyses reveal that the two taxa inhabiting Lake Victoria,  B. sudanica  and  B. choanomphala , are very similar to one another relative to the similarity either shows to  B. pfeifferi  or  B. glabrata . This new sequence information may prove useful for developing new markers for snail identification, environmental detection/monitoring purposes or for tracking epidemiology and snail dependencies of  S. mansoni  in endemic areas. It also provides new information pertinent to still unresolved questions in  Biomphalaria  systematics and nomenclature.

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Complete mitochondrial and rDNA complex sequences of important vector species of Biomphalaria, obligatory hosts of the human-infecting blood fluke, Schistosoma mansoni