A low stringency polymerase chain reaction approach to the identification of Biomphalaria glabrata and B. tenagophila, intermediate snail hosts of Schistosoma mansoni in Brazil
Mem. Inst. Oswaldo Cruz
;
91(6): 739-44, Nov.-Dec. 1996. ilus, tab, graf
Article
in English
| LILACS
| ID: lil-181140
RESUMO
The low stringency polymerase chain reaction (LS-PCR) with a pair of specific primers for the amplification of the 18S rRNA gene was evaluted as a means of differentiating between the two Schistosoma mansoni intermediate host species in Brazil: Biomphalaria glabrata and B. tenagophila. Individual snails obtained from different states of Brazil were used and the amplification patterns obtained showed a high degree of gentic variability in these species. Nevertheless, 4 and 3 clearly defined specific diagnostic bands was observed in individuals from B. glabrata and B. tenagophila respectively. The detection of snail specific diagnostic bands suggests the possibility of reliable species differentiation at DNA level using LS-PCR.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Schistosoma mansoni
/
Biomphalaria
Type of study:
Diagnostic study
Limits:
Animals
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
1996
Type:
Article
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