Morphological and Polymerase Chain Reaction-Restriction Fragment Lenght Polymorphism Characterization of Biomphalaria kuhniana and Biomphalaria amazonica from Colombia Luz E Velásquez, Roberta L Caldeira, Victoria Estrada, Omar S Carvalho

Genetic Variability in Brazilian Populations of Biomphalaria straminea Complex Detected by Simple Sequence Repeat Anchored Polymerase Chain Reaction Amplification Roberta L Caldeira, Teofânia HDA Vidigal, Andrew JG Simpson,Omar S Carvalho PAGE: 535-544

Identification of Planorbids from Venezuela by Polymerase Chain Reaction Amplification and Restriction Fragment Length Polymorphism of Internal Transcriber Spacer of the RNA Ribosomal Gene Roberta L Caldeira, Teofânia HDA Vidigal, Liboria Matinella,Andrew JG Simpson, Omar S Carvalho PAGE: 171-177

Molecular Identification of Similar Species of the Genus Biomphalaria (Mollusca: Planorbidae) Determined by a Polymerase Chain Reaction-Restriction Fragment Length Polymorphism Roberta Lima Caldeira, Teofânia HDA Vidigal*, Sônia Torquato Paulinelli, Andrew JG Simpson**, Omar S Carvalho/ PAGE: 219-225