Teofânia HDA Vidigal

Analysis of the first and second internal transcribed spacer sequences of the ribosomal DNA in Biomphalaria tenagophila complex (Mollusca: Planorbidae) (2004)

Vidigal,Teofânia HDA, Spatz,Linus, Kissinger,Jessica C, Redondo,Rodrigo AF, Pires,Edina CR, Simpson,Andrew JG, ...

The first and second internal transcribed spacer regions (ITS1 and ITS2) of the ribosomal DNA of Biomphalaria tenagophila complex (B. tenagophila, B. occidentalis, and B. t. guaibensis) were...

Polymerase Chain Reaction and Restriction Fragment Length Polymorphism of Cytocrome Oxidase Subunit I Used for Differentiation of Brazilian Biomphalaria   Species Intermediate Host of Schistosoma mansoni   (2002)

Teofânia HDA Vidigal, Lângia C Montresor, Andrew JG Simpson, Omar S Carvalho

The intermediate hosts of Schistosoma mansoni   , in Brazil, Biomphalaria glabrata   , B. tenagophila and B. straminea , were identified by restriction fragment length polymorphism analysis of the...

Polymerase chain reaction and restriction fragment length polymorphism of cytocrome oxidase subunit I used for differentiation of Brazilian Biomphalaria species intermediate host of Schistosoma mansoni (2002)

Vidigal,Teofânia HDA, Montresor,Lângia C, Simpson,Andrew JG, Carvalho,Omar S

The intermediate hosts of Schistosoma mansoni, in Brazil, Biomphalaria glabrata, B. tenagophila and B. straminea, were identified by restriction fragment length polymorphism analysis of the...

Genetic Variability in Brazilian Populations of Biomphalaria straminea Complex Detected by Simple Sequence Repeat Anchored Polymerase Chain Reaction Amplification (2001)

Roberta L Caldeira, Teofânia HDA Vidigal, Andrew JG Simpson, Omar S Carvalho

Biomphalaria glabrata, B. tenagophila and B. straminea are intermediate hosts of Schistosoma mansoni, in Brazil. The latter is of epidemiological importance in the northwest of Brazil and, due to...

Identification of Biomphalaria havanensis and Biomphalaria obstructa Populations from Cuba Using Polymerase Chain Reaction and Restriction Fragment Length Polymorphism of the Ribosomal RNA Intergenic Spacer (2001)

Teofânia HDA Vidigal, Roberta L Caldeira, Andrew JG Simpson, Omar S Carvalho

In Cuba, several Biomphalaria species have been reported such as B. orbignyi, B. schrammi, B. helophila, B. havanensis and B. peregrina; only the latter three are considered as potential hosts of...

Identification of Biomphalaria havanensis and Biomphalaria obstructa populations from Cuba using polymerase chain reaction and restriction fragment length polymorphism of the ribosomal RNA intergenic spacer (2001)

Vidigal,Teofânia HDA, Caldeira,Roberta L, Simpson,Andrew JG, Carvalho,Omar S

In Cuba, several Biomphalaria species have been reported such as B. orbignyi, B. schrammi, B. helophila, B. havanensis and B. peregrina; only the latter three are considered as potential hosts of...

Genetic variability in Brazilian populations of Biomphalaria straminea complex detected by simple sequence repeat anchored polymerase chain reaction amplification (2001)

Caldeira,Roberta L, Vidigal,Teofânia HDA, Simpson,Andrew JG, Carvalho,Omar S

Biomphalaria glabrata, B. tenagophila and B. straminea are intermediate hosts of Schistosoma mansoni, in Brazil. The latter is of epidemiological importance in the northwest of Brazil and, due to...

Further Studies on the Molecular Systematics of Biomphalaria Snails from Brazil (2000)

Teofânia HDA Vidigal, Roberta Lima Caldeira, Andrew JG Simpson, Omar S Carvalho

The polymerase chain reaction and restriction fragment length polymorphism (RFLP) of the internal transcribed spacer (ITS) region of the rRNA gene, using the enzyme DdeI were used for the molecular...

Identification of Planorbids from Venezuela by Polymerase Chain Reaction Amplification and Restriction Fragment Length Polymorphism of Internal Transcriber Spacer of the RNA Ribosomal Gene (2000)

Roberta L Caldeira, Teofânia HDA Vidigal, Liboria Matinella, Andrew JG Simpson, Omar S Carvalho

Snails of the genus Biomphalaria from Venezuela were subjected to morphological assessment as well as polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) analysis....

Characterization of Biomphalaria orbignyi, Biomphalaria peregrina and Biomphalaria oligoza by polymerase chain reaction and restriction enzyme digestion of the internal transcribed spacer region of the RNA ribosomal gene (2000)

Spatz,Linus, Vidigal,Teofânia HDA, Silva,Márcia CA, Gonzalez Cappa,Stella Maris, Carvalho,Omar S

The correct identification of Biomphalaria oligoza, B. orbignyi and B. peregrina species is difficult due to the morphological similarities among them. B. peregrina is widely distributed in South...

Identification of planorbids from Venezuela by polymerase chain reaction amplification and restriction fragment length polymorphism of internal transcriber spacer of the RNA ribosomal gene (2000)

Caldeira,Roberta L, Vidigal,Teofânia HDA, Matinella,Liboria, Simpson,Andrew JG, Carvalho,Omar S

Snails of the genus Biomphalaria from Venezuela were subjected to morphological assessment as well as polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) analysis....

Further studies on the molecular systematics of Biomphalaria snails from Brazil (2000)

Vidigal,Teofânia HDA, Caldeira,Roberta Lima, Simpson,Andrew JG, Carvalho,Omar S

The polymerase chain reaction and restriction fragment length polymorphism (RFLP) of the internal transcribed spacer (ITS) region of the rRNA gene, using the enzyme DdeI were used for the molecular...

Genetic Variability and Identification of the Intermediate Snail Hosts of Schistosoma mansoni (1998)

Teofânia HDA Vidigal, Emmanuel Dias Neto, Linus Spatz, Diana N Nunes, Edina R Pires, Andrew JG Simpson, ...

Studies based on shell or reproductive organ morphology and genetic considerations suggest extensive intraspecific variation in Biomphalaria snails. The high variability at the morphological and...

Molecular Identification of Similar Species of the Genus Biomphalaria (Mollusca: Planorbidae) Determined by a Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (1998)

Roberta Lima Caldeira, Teofânia HDA Vidigal, Sônia Torquato Paulinelli, Andrew JG Simpson, Omar S Carvalho

The freshwater snails Biomphalaria straminea, B. intermedia, B. kuhniana and B. peregrina, are morphologically similar; based on this similarity the first three species were therefore grouped in the...

Genetic variability and identification of the intermediate snail hosts of Schistosoma mansoni (1998)

Vidigal,Teofânia HDA, Dias Neto,Emmanuel, Spatz,Linus, Nunes,Diana N, Pires,Edina R, Simpson,Andrew JG, ...

Studies based on shell or reproductive organ morphology and genetic considerations suggest extensive intraspecific variation in Biomphalaria snails. The high variability at the morphological and...

Molecular identification of similar species of the genus Biomphalaria (Mollusca: Planorbidae) determined by a polymerase chain reaction-restriction fragment length polymorphism (1998)

Caldeira,Roberta Lima, Vidigal,Teofânia HDA, Paulinelli,Sônia Torquato, Simpson,Andrew JG, Carvalho,Omar S

The freshwater snails Biomphalaria straminea, B. intermedia, B. kuhniana and B. peregrina, are morphologically similar; based on this similarity the first three species were therefore grouped in the...

Molecular study of similar Biomphalaria species (1998)

Spatz,Linus, Vidigal,Teofânia HDA, Caldeira,Roberta L, Dias Neto,Emmanuel, González Cappa,Stella Maris, Carvalho,Omar S