Department of Epidemiology and International Health, University of California, San Francisco, CA 94143, U.S.A.
Abstract:
Four strains of Biomphalaria glabrata showed a distinctive pattern of acquired resistance to each of 3 echinostome species. Juvenile albino B. glabrata from our laboratory NIH stock developed a strong resistance to Echinostoma lindoense but only a weak one to E. paraensei and a moderate one to E. liei. Juvenile B. glabrata 10-R2 strain developed a strong acquired resistance to E. lindoense but a weak one to E. paraensei and E. liei. Juvenile B. glabrata M-RLc strain developed a strong acquired resistance to E. lindoense and a moderate one to E. paraensei and E. liei. Juvenile B. glabrata 641 strain developed a moderate acquired resistance to E. lindoense, a weak one to E. liei and no measurable resistance to E. paraensei.