MolluscaGastropodaBivalviaSnailsPolyplacophoraNautilusOctopodiformesBiomphalariaPhylogenyAnnelidaInvertebratesPernaEchinodermataRNA, Ribosomal, 18SAtlantic OceanMolluscacidesSequence Analysis, DNADNA, RibosomalMolecular Sequence DataEvolution, MolecularGenome, MitochondrialRNA, Ribosomal, 16SBacteroidetesGene OrderLymnaeaBiological EvolutionDNA, MitochondrialBacteriaRiversDisease VectorsSchistosoma mansoniSpecies SpecificityPoriferaBrazilBase SequenceCnidariaMetagenomeChloroflexiRNA, TransferDNA, BacterialPopulation DensityPlatyhelminthsBiodiversityGenes, rRNAProteobacteriaHydrozoaCtenophoraNucleic Acid ConformationBase CompositionCytophagaApicomplexaAcidobacteriaActinobacteriaBiotaPlacozoaSoil MicrobiologyArthropodsMetagenomicsGeologic SedimentsArchaeaIsopteraEukaryotaCytophagaceaeRNA, BacterialSeawaterGenome, BacterialSea AnemonesFusobacteriaHot Springs