Fig. 1

Map of study site. a Satellite imagery (source: Google Maps) showing the districts of Uganda (source: Uganda Bureau of Statistics, Kampala, Uganda). b Close-up of Mayuge District with the location of the study area indicated. c Map showing the villages of Bugoto A and B and their respective water contact sites (A–J); these sites were identified through ethnographic observations and are the sites where all snail surveys were carried out