| rats and bilharziasis in guadeloupe. | the rats in guadeloupe (rattus rattus and rattus norvegicus) may play a part in schistosomiasis in three ways: - by harbouring fertile s. mansoni, a fact which serves to increase the total population of the parasite and may eventually take part in the infestation of man; - by harbouring a great number of ribeiroia marini, a trematode whose larval stages sterilize biomphalaria glabrata, the vector of schistosomiasis; - simply by eating b. glabrata. the quantitative influence of these contradicto ... | 1975 | 7114 |
| data on the life cycle of ribeiroia marini guadeloupensis n. ssp., a trematode sterilizing biomphalaria glabrata in guadeloupe. | data on the life cycle of ribeiroia marini guadeloupensis n.ssp., trematode sterilizing biomphalaria glabrata in guadeloupe. maintenance of the life cycle with a view to an eventual control of the populations of molluscs. in guadeloupe (french west indies), the definitive hosts of ribeiroia marini guadeloupensis n.ssp. are the two species of rats: rattus rattus and r. norvegicus. the first intermediate host is biomphalaria glabrata, the vector of intestinal schistosomiasis. the second intermedia ... | 1978 | 24996 |
| [evaluation of a trial to control biomphalaria glabrata in guadeloupe by using a sterilizing trematode (author's transl)]. | a trial of biological control of biomphalaria glabrata was carried out in guadeloupe by using ribeiroia marini guadeloupensis nassi, 1978, an autochtonal trematode which sterilizes the snail vector of schistosoma mansoni. the trial took place in a pond in which the population of b. glabrata presents an annual demographic cycle related to the alternation of dry and rainy seasons. about 8 millions eggs of r. marini were introduced in 15 months into the biotope. despite the low yield of these intro ... | 1979 | 539719 |
| [the role of the rat in the dynamics of endemic schistosomias in guadeloupe]. | in guadeloupe (french lesser antilles), because they are simultaneously infested with schistosoma mansoni, which causes the human intestinal schistosomiasis, and ribeiroia marini, a trematode which sterilizes the mollusk-host of the schistosoma, the rats (rattus rattus and rattus norvegicus) seem able to influence, at least locally, the infestation of the human population. | 1975 | 813876 |
| shedding patterns of schistosoma mansoni and ribeiroia marini cercariae from a mixed infection of biomphalaria glabrata. | when the snail biomphalaria glabrata is doubly infected by two species of trematode, schistosoma mansoni and ribeiroia marini, each species keeps its own cercarial shedding pattern. emergence of s. mansoni cercariae occurs during the photophase while the r. marini cercariae are shed during the night. these results demonstrate the absence of interference between the mechanisms responsible for the cercarial shedding of each species. the only difference noted concerns a two-hour shift in the peak e ... | 1986 | 3794287 |
| [cercaria of ribeiroia marini (faust and hoffman, 1934), antagonistic trematode of schistosoma mansoni and inducing castration of the host-mollusca, vector of human schistosomiasis]. | | 1974 | 4215583 |
| ribeiroia marini: pathogenesis and larval trematode antagonism in the snail, biomphalaria glabrata. | | 1973 | 4706118 |
| experimental exposure of helisoma trivolvis and biomphalaria glabrata (gastropoda) to ribeiroia ondatrae (trematoda). | abstract experimental infections provide an important foundation for understanding host responses to parasites. while infections with ribeiroia ondatrae cause mortality and malformations in a wide range of amphibian second intermediate host species, little is known about how the parasite affects its snail first intermediate hosts or even what species can support infection. in this study, we experimentally exposed helisoma trivolvis, a commonly reported host of r. ondatrae, and biomphalaria glabr ... | 2011 | 21671721 |
| morphological and its2 molecular characterization of ribeiroia cercariae (digenea: psilostomidae) from biomphalaria spp. (gastropoda: planorbidae) in northern argentina. | species of ribeiroia use planorbid snails as intermediate host. since there is little information about these digenean parasites in south america, we aimed to assess whether ribeiroia cercariae from 3 north argentina locations belonged to the same species and differed from ribeiroia cercariae described elsewhere. specimens were obtained from biomphalaria tenagophila and biomphalaria orbignyi (salta province), and biomphalaria occidentalis (corrientes province). morphological traits of cercariae ... | 2015 | 26075730 |
| ribeiroia marini: irradiated miracidia and induction of acquired resistance in biomphalaria glabrata. | | 1982 | 7056343 |
| [the chronobiology of the cercaria of ribeiroia marini (faust and hoffman, 1934) parasite of biomphalaria glabrata: effect of the photoperiod on the rhythm of emergence]. | ribeiroir marini cercariage emerge from the snail-host during the night, according to a circadian rhythm. the photoperiod is the synchronizer of this rhythm. inversion of the photoperiod is immediately followed by inversion of the periodicity of emergence. no cercaria emerge in continuous light conditions. this inhibitory effect of light exerts its influence on the emergence but not on the production of cercariae. the rhythmic emergence is almost maintained in continous dark, but darkness cannot ... | 1975 | 7115 |