An attempt was made to determine more accurately the density of molluskan populations in the Pampulha reservoir, using the quadrate method, intending to detect the fluctuation of the populations density, the habitat conditions and the possible competitive interactions among Biomphalaria tenagophila, Mela...
The different climatic regions determine the zoogeographic distribution of various animal species depending on their particular conditions and ecological preferences. The host schistosomiasis planorbid is one of these species. This paper deals with the distribution of Biomphalaria straminea in northeast ...
Experiments were carried out using aqueous extracts from leaves and flowers of Laurus nobilis on Biomphalaria glabrata. Treatments were performed on blastula stage (± 15 h after first cleavage) and on adult snails (11-18 mm). In both instances they were exposed for 24 h to different concentrations of th...
In this paper the authors briefly describe a human Schistosoma mansoni strain from Pará State, Brazil. The CIRENE'S strain was capable of infecting 71.4% of the snail vector Biomphalaria glabrata (Telegrafo's strain) provided by the "Evando Chagas" Institute, Belém. The cycle was completed by the infec...
Cell-free hemolymph (serum) and hemocytes from Schistosoma mansoni-susceptible (PR albino M-line) and resistant (10-R2) strains of Biomphalaria glabrata were compared by SDS-PAGE, immunoblotting and radioiodination. Whole serum of both snail strains is dominated by hemoglobin (Hb) (MW = 160 Kd). SDS-PAGE...
Os planorbídeos da espécie Biomphalaria straminea têm vasta distribuição no Brasil. No Estado de São Paulo, a introdução dessa espécie ocorreu em 1969, através de peixes importados do Nordeste do Brasil, segundo R.R. Corrêa et alii (19,70). Em 1972, J.T. Piza et alii assinalaram a existência ...
A esquistossomose mansônica é doença que veio da Africa com os negros escravos e que no estado de Pernambuco, como de resto no Brasil, encontrou condiçöes propícias para se fixar como endemia. A água que serve o homem em suas necessidades básicas de sobrevivência é a mesma que recebe o excremen...
