| lymnaea truncatula, intermediate host of some plagiorchiidae and notocotylidae species in león, nw spain. | to study the distribution of lymnaea truncatula in the porma river basin (león, nw spain) and its helminth fauna, malacological samplings were carried out at 66 points in the basin and the presence of these molluscs was detected in 31. to trace the dynamics of this mollusc population and the prevalence and intensity of its infection by trematodes, malacological samplings were made at fortnightly intervals over two years at five locations, situated in the upper and middle regions of the river por ... | 1994 | 7930455 |