EchinostomiasisEchinostomaMolluscaSnailsBiomphalariaTrematodaLymnaeaBulinusAcanthocephalaHost-Parasite InteractionsDisease VectorsTrematode InfectionsMolluscacidesGastropodaCestodaAngiostrongylusAngiostrongylus cantonensisFMRFamideSchistosoma mansoniSchistosomiasisShellfishHelix (Snails)MetastrongyloideaBivalviaEchinococcus multilocularisCestode InfectionsLife Cycle Stages