| dominant character of the molecular marker of a biomphalaria tenagophila strain (mollusca: planorbidae) resistant to schistosoma mansoni. | biomphalaria tenagophila population from taim (state of rio grande do sul, brazil) is totally resistant to schistosoma mansoni, and presents a molecular marker of 350 bp by polymerase chain reaction and restriction fragment length polymorphism of the entire rdna internal transcriber spacer. the scope of this work was to determine the heritage pattern of this marker. a series of cross-breedings between b. tenagophila from taim (resistant) and b. tenagophila from joinville, state of santa catarina ... | 2004 | 15057353 |
| [geographic distribution of planorbidae in santa catarina, brazil]. | a revision of the malacological surveys carried out in santa catarina, brazil, by the national health foundation in 52 counties of 8 microregions between 1981 and 1994 was made. fifty of them were positive for biomphalaria tenagophila, the only schistosome vector identified in the 94,535 specimens collected. of 1,358 districts, 617 (45.4%) were positive to the vector, varying from 4.3% to 89.4% per municipality. the percentages of water bodies with planorbids varied from 0.2% to 26.3% and, of th ... | 1996 | 8966305 |
| natural and experimental infection of planorbids from the island of santa catarina (brazil). | studies of eight localities on the island of santa catarina revealed the presence of three species of the molluscan family planorbidae: biomphalaria tenagophila, drepanotrema cimex and biomphalaria oligoza, the first one being naturally infected by cercaria ocellifera, a furcocercaria with morphological characteristics of cercaria caratinguensis, and by an unknown furcocercaria. drepanotrema cimex was infected by a furcocercaria with characteristics of c. caratinguensis and by c. macrogranulosa. ... | 1992 | 1342085 |