[Resistance to desiccation of Biomphalaria glabrata adults infested by various miracidia of Schistosoma mansoni].

1200 adult Biomphalaria glabrata were submitted during 6 weeks to anhydrobiosis condition. Some snails were healthy, some were previously infected 3 days or 12 days ago with 8 +/- 2 miracidia of Schistosoma mansoni, others were shedding cercariae. The snails were put on soil or buried into hermetically closed, or ventilated, plastic boxes.

[The influence of anhydrobiosis on the infestation of Biomphalaria glabrata by Schistosoma mansoni miracidium].

410 Biomphalaria glabrata (Caribbean strain of Guadeloupe) have been infected with one miracidium of Schistosoma mansoni, 110 snails, used as controls have been kept into water; the survival rate was 96.4% after 4 weeks and 25.4% produced cercariae.

[Experimental schistosomiasis III. Observations on the infestation of Biomphalaria glabrata by a miracidium of Schistosoma mansoni].

380 B. glabrata infected with 1 miracidium of S. mansoni produced 87 positive snails (22,9%), 38 of which sending out male cercariae and 49 female cercariae.