The intermediate hosts of
Schistosoma mansoni
, in Brazil,
Biomphalaria glabrata
,
B. tenagophila
and
B. straminea
, were identified by restriction fragment length polymorphism analysis of
the mitochondrial gene cytochrome oxidase I (COI). We performed digestions
with two enzymes (AluI and RsaI), previously selected, based on sequences
available in Genbank. The profiles obtained with RsaI showed to be the most
informative once they were polymorphic patterns, corroborating with much
morphological data. In addition, we performed COI digestion of
B. straminea
snails from Uruguay and Argentina.
