CONICET | Buscador de Institutos y Recursos Humanos

ABSTRACT. Since temperature is a key condition in the initiation of cercarial emergence, the objective of the work reported here was to evaluate theeff ect of that variable on the shedding of two morphologic and taxonomic types of cercariae. Bioassays were accordingly performed with snails naturallyinfected with either monostome or pleurolophocercous cercariae because those two cercarial types were found to be the most prevalent in the environmentunder study. The snails were placed in 6-ml circular plastic dishes with soft plastic stoppers containing 3 ml of reconstituted water and then sequentiallyexposed for 24 h to a 14:10-h light:dark cycle at 20, 25, or 30 °C. The data were analyzed at a signifi cance level of p