SnailsBiomphalariaDisease VectorsSchistosoma mansoniLymnaeaFresh WaterMolluscacidesBulinusEchinostomaCercariaHost-Parasite InteractionsAnimal ShellsSchistosomiasis mansoniEgyptMartiniqueGuadeloupeSchistosomaTrematodaSaint LuciaGenetic VectorsPopulation DensityHemolymphHemocytesInvertebrate HormonesBrazilSchistosomiasisHelix (Snails)EuphorbiaNiclosamideSilver StainingLatexOocystsInsect VectorsCompetitive BehaviorBiological PhenomenaConus SnailLethal Dose 50TilapiaEchinostomiasisDNA, HelminthPest Control, BiologicalAngiostrongylusLakesArgentinaPhylogenyGillsPalaemonidaeMolecular Sequence DataPiperaceaeParasite Egg CountPest ControlDalbergiaEcologyDNA, Ribosomal SpacerSeawaterRiversSchistosomicidesFishesSpecies SpecificityFreshwater BiologyLarvaRandom Amplified Polymorphic DNA TechniqueEcosystemCubaDNA, RibosomalPolymerase Chain ReactionPlant ExtractsWater MicrobiologySchistosoma haematobiumSeasonsPredatory BehaviorBase SequenceEnvironmentPolymorphism, Restriction Fragment LengthPlanktonTrematode InfectionsGenetic VariationFish Diseases