| host choice and penetration by schistosoma haematobium miracidia. | schistosome parasites commonly show specificity to their intermediate mollusc hosts and the degree of specificity can vary between parasite strains and geographical location. here the role of miracidial behaviour in host specificity of schistosoma haematobium on the islands of zanzibar is investigated. in choice-chamber experiments, s. haematobium miracidia moved towards bulinus globosus snail hosts in preference to empty chambers. in addition, miracidia preferred uninfected over patent b. globo ... | 2009 | 18922204 |