Variations in infectivity for Biomphalaria glabrata in strains of Schistosoma mansoni from the same geographical area.
Genetic differences in infectivity for intermediate snail hosts in two strains of S. mansoni from the same geographical area and within a single isolated parasite population are reported. The importance of recognizing the potential for such genetic variation is stressed.
D000818:Animals; D001700:Biomphalaria / Q000469:parasitology*; D011647:Puerto Rico; D012550:Schistosoma mansoni