Roberta L. Caldeira

Phylogenetics of South American Biomphalaria and description of a new species (Gastropoda: Planorbidae) (2006)

Estrada, Victoria E., Velásquez, Luz E., Caldeira, Roberta L., Bejarano, Eduar E., Rojas, Winston, Carvalho, Omar S.

The planorbid snail Biomphalaria edisoni n. sp. is described from morphological and molecular characters, based on specimens collected at two localities in Colombia. The new species has the typical...

Phylogenetics of south american biomphalaria and description of a new species (gastropoda: planorbidae) (2006)

Estrada, Victoria E., Velásquez, Luz E., Caldeira, Roberta L., Bejarano, Eduar E., Rojas, Winston, Carvalho, Omar S.

The planorbid snail Biomphalaria edisoni n. sp. is described from morphological and molecular characters, based on specimens collected at two localities in Colombia. The new species has the typical...

Diagnostic of Biomphalaria   Snails and Schistosoma mansoni   : DNA Obtained from Traces of Shell Organic Materials (2004)

Roberta L Caldeira, Pollanah M Lira, Omar S Carvalho

Freshwater snails belonging to the genus Biomphalaria   act as intermediate hosts for the parasite trematode Schistosoma mansoni   in Africa and in the neotropical region. Identification of such...

Rural Tourism as Risk Factor for the Transmission of Schistosomiasis in Minas Gerais, Brazil (2004)

Martin J Enk, Roberta L Caldeira, Omar S Carvalho, Virginia T Schall

Recently, the booming rural tourism in endemic areas of the state of Minas Gerais was identified as a contributing factor in the dissemination of the infection with Schistosoma mansoni   . This...

Diagnostic of Biomphalaria snails and Schistosoma mansoni: DNA obtained from traces of shell organic materials (2004)

Caldeira,Roberta L, Jannotti-Passos,Liana K, Lira,Pollanah M, Carvalho,Omar S

Freshwater snails belonging to the genus Biomphalaria act as intermediate hosts for the parasite trematode Schistosoma mansoni in Africa and in the neotropical region. Identification of such molluscs...

The use of the polymerase chain reaction and restriction fragment length polymorphism technique associated with the classical morphology for characterization of Lymnaea columella, L. viatrix, and L. diaphana (Mollusca: Lymnaeidae) (2004)

Carvalho,Omar S, Cardoso,Paula CM, Lira,Pollanah M, Rumi,Alejandra, Roche,Andrea, Berne,Elizabeth, ...

The specific identification of Lymnaeid snails is based on a comparison of morphological characters of the shell, radula, renal and reproductive organs. However, the identification is complicated by...

Rural tourism as risk factor for the transmission of schistosomiasis in Minas Gerais, Brazil (2004)

Enk,Martin J, Caldeira,Roberta L, Carvalho,Omar S, Schall,Virginia T

Recently, the booming rural tourism in endemic areas of the state of Minas Gerais was identified as a contributing factor in the dissemination of the infection with Schistosoma mansoni. This article...

Diagnostic of Biomphalaria snails and Schistosoma mansoni: DNA obtained from traces of shell organic materials (2004)

Caldeira, Roberta L., Jannotti-Passos, Liana K., Lira, Pollanah M., Carvalho, Omar S.

Freshwater snails belonging to the genus Biomphalaria act as intermediate hosts for the parasite trematode Schistosoma mansoni in Africa and in the neotropical region. Identification of such molluscs...

Rural tourism as risk factor for the transmission of Schistosomiasis in Minas Gerais, Brazil (2004)

Enk, Martin J., Caldeira, Roberta L., Carvalho, Omar S., Schall, Virgínia

Recently, the booming rural tourism in endemic areas of the state of Minas Gerais was identified as a contributing factor in the dissemination of the infection with Schistosoma mansoni. This article...

Molecular Differentiation of Angiostrongylus costaricensis   , A. cantonensis, and A. vasorum by Polymerase Chain Reaction- Restriction Fragment Length Polymorphism (2004)

Roberta L Caldeira, Omar S Carvalho, Cristiane LFG Mendonça, Carlos Graeff-Teixeira, Márcia CF Silva, Renata Ben, ...

Angiostrongylus cantonensis   , A. costaricensis, and A. vasorum are etiologic agents of human parasitic diseases. Their identification, at present, is only possible by examining the adult worm...

Molecular differentiation of Angiostrongylus costaricensis, A. cantonensis, and A. vasorum by polymerase chain reaction- restriction fragment length polymorphism (2003)

Caldeira,Roberta L, Carvalho,Omar S, Mendonça,Cristiane LFG, Graeff-Teixeira,Carlos, Silva,Márcia CF, Ben,Renata, ...

Angiostrongylus cantonensis, A. costaricensis, and A. vasorum are etiologic agents of human parasitic diseases. Their identification, at present, is only possible by examining the adult worm after a...

Molecular Differentiation of Angiostrongylus costaricensis, A. cantonensis, and A. vasorum by Polymerase Chain Reaction- Restriction Fragment Length Polymorphism (2003)

Caldeira, Roberta L., Carvalho, Omar S., Graeff-Teixeira, Carlos, Silva, Márcia C. F., Ben, Renata, ...

Angiostrongylus cantonensis, A. costaricensis, and A. vasorum are etiologic agents of human parasitic diseases. Their identification, at present, is only possible by examining the adult worm after a...

Morphological and Polymerase Chain Reaction-Restriction Fragment Lenght Polymorphism Characterization of Biomphalaria kuhniana   and Biomphalaria amazonica   from Colombia (2003)

Luz E Velásquez, Roberta L Caldeira, Victoria Estrada, Omar S Carvalho

In Colombia, five Biomphalaria   planorbid species are known: B. kuhniana, B. straminea, B. peregrina, B. canonica and B. oligoza(var. B. philippiana). Among them, B. straminea is intermediate host...

Sequencing of Simple Sequence Repeat Anchored Polymerase Chain Reaction Amplification Products of Biomphalaria glabrata   (2002)

Roberta L Caldeira, Omar S Carvalho, Regina CG Lage, Guilherme C Oliveira

Simple sequence repeat anchored polymerase chain reaction amplification (SSR-PCR) is a genetic typing technique based on primers anchored at the 5' or 3' ends of microsatellites, at high primer...

Morphological and polymerase chain reaction-restriction fragment lenght polymorphism characterization of Biomphalaria kuhniana and Biomphalaria amazonica from Colombia (2002)

Velásquez,Luz E, Caldeira,Roberta L, Estrada,Victoria, Carvalho,Omar S

In Colombia, five Biomphalaria planorbid species are known: B. kuhniana, B. straminea, B. peregrina, B. canonica and B. oligoza(var. B. philippiana). Among them, B. straminea is intermediate host of...

Sequencing of simple sequence repeat anchored polymerase chain reaction amplification products of Biomphalaria glabrata (2002)

Caldeira,Roberta L, Carvalho,Omar S, Lage,Regina CG, Cardoso,Paula Cristina M, Oliveira,Guilherme C

Simple sequence repeat anchored polymerase chain reaction amplification (SSR-PCR) is a genetic typing technique based on primers anchored at the 5' or 3' ends of microsatellites, at high primer...

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...

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....

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....

Study of Biomphalaria Tenagophila Tenagophila, B. t. Guaibensis and B. Occidentalis by Polymerase Chain Reaction Amplification and Restriction Enzyme Digestion of the Ribosomal RNA Intergenic Spacer Regions (1999)

Spatz, Linus, Caldeira, Roberta L., Neto, Emmanuel Dias, Cappa, Stella Maris Gonzalez, Carvalho, Omar S.

Biomphalaria tenagophila tenagophila, B. tenagophila guaibensis and B. occidentalis are indistinguishable on the basis of shell morphology and the majority of organs of the genital system. Only B. t....

RE-EVALUATION OF SCHISTOSOMIASIS MANSONI IN MINAS GERAIS, BRAZIL. III. "NOROESTE DE MINAS" MESOREGION (1998)

CARVALHO,Omar S., MASSARA,Cristiano L., GUERRA,Henrique L., CAMPOS,Yoná R., CALDEIRA,Roberta L., CHAVES,Adelú, ...

This study was conducted to assess the presence of schistosomiasis mansoni in the "Noroeste de Minas" mesoregion, an area considered non-endemic. A malacologic survey and parasitologic stool...