| [ecological observations on biomphalaria straminea (dunker, 1848) in areas of the northeast, brazil]. | 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 brazil. it starts from the analysis of different climatic peculiarities in this region, associated to limnological observation done by the author in three different hydric collections in the stat ... | 1987 | 3509188 |
| [dispersion of biomphalaria straminea in the state of sergipe: a comparative study within an interval of 19 years]. | the aim of the current paper was to study in the state of sergipe the population distribution and interactions between two species of biomphalaria, the snail vectors of schistosoma mansoni in the northeastern brazil. data collected in 1969 showed that b. straminea, with only one exception, was limited to the semi-dry region, while b. glabrata was found to live exclusively in the forest region, both in the state of sergipe. this spatial distribution seemed to suggest that the above biomphalaria s ... | 1989 | 2520830 |