| molecular analysis of echinostome metacercariae from their second intermediate host found in a localised geographic region reveals genetic heterogeneity and possible cryptic speciation. | echinostome metacercariae are the infective stage for humans and animals. the identification of echinostomes has been based until recently on morphology but molecular techniques using sequences of ribosomal rna and mitochondrial dna have indicated major clades within the group. in this study we have used the its2 region of ribosomal rna and the nd1 region of mitochondrial dna to identify metacercariae from snails collected from eight well-separated sites from an area of 4000 km2 in lamphun provi ... | 2014 | 24699358 |