[The biological control of Fossaria cubensis, the intermediate host of Fasciola hepatica, in 2 localities with different control agents].

A control was carried out on Fossaria cubensis, intermediate host of Fasciola hepatica, in two localities, by means of 2 different control agents. In one of them Helisoma duryi was used due to its ecological advantages as compared with the intermediate host (higher growth rhythm and lower generational time), and in the other Tarebia granifera was used, which has biological and ecological advantages upon most mollusks (ovoviviparous, parthenogenetic, longer life cycle and higher growth rhythm). In both localities an effective control was seen with the remarkable decrease of the host density after the introduction of the competitive agent.