Immunoelectrophoretic studies on common antigenicities were carried out by using rabbits sera immunized with the Puerto Rican strain of Schistosoma mansoni adult worms or eggs and antigens of several adult Biomphalaria snails and vice versa. As the result, S. mansoni adult worm extracts produced 8 bands both with extracts of Biomphalaria glabrata pigmentation and B. glabrata pigmentado, 3 to 4 ...

15 Gregory, T.R. (2003) Genome size estimates for two important freshwater molluscs, the zebra mussel (Dreissena polymorpha) and the schistosomiasis vector snail (Biomphalaria glabrata).Genome46, 841–844 16 Goldman, M.A. et al. (1984) Chromosomal evolution in planorbid snails of the genera Bulinus and Biomphalaria. Malacologia 25, 427–446 17 Knight, M. et al. (1998) Expressed sequence tags (EST...

schistosomiasis is the second most common parasitic cause of death, after malaria. biomphalaria glabrata is a fresh water snail with medical importance since it is the intermediate host of schistosoma mansoni, an agent of schistosomiasis. the internal defense system of b. glabrata snails is mostly represented by circulating elements of the hemolymph, hemocytes, which are important factors in fi...

HIGHLIGHTS The gametogenesis of Biomphalaria glabrata was described. Oogenesis classified into five developmental stages. New histomorphometric parameters were described for oocytes. Spermatogenesis seven stages development. B. as a tool environmental and public health researches.

This study evaluated the molluscicidal activity against schistosomiasis-transmitting snail (Biomphalaria glabrata) of nanoemulsion Thymus vulgaris L. essential oil. The plant material was collected in municipality São Luís (MA). oil extracted by hydrodistillation at 100 °C for 3h, with chemical characterization performed Gas Chromatography coupled to Mass Spectrometry (GC-MS). nanoemulsions wer...

To provide a novel resource for analysis of the genome of Biomphalaria glabrata, members of the international Biomphalaria glabrata Genome Initiative (http://biology.unm.edu/biomphalaria-genome.html), working with the Arizona Genomics Institute (AGI) and supported by the National Human Genome Research Institute (NHGRI), produced a high quality bacterial artificial chromosome (BAC) library. The ...

Present report demonstrates that repeated radiation of Schistosoma mansoni-infected Biomphalaria glabrata, totaling 15,000 rads, caused a sudden, albeit transient, suppression of cercarial shedding. Initially, sporocysts practically disappeared from the snail tissues. The more resistant developing cercariae presented nuclear clumping and vacuolation, before undergoing lysis. No host tissue reac...

BARBOSA, F. S.; SANCHES, O.; BARBOSA, C. S. & ARRUDA, F. Dynamics of Snail Populations of Biomphalaria glabrata and B. straminea under Semi-Natural Conditions. Cad. Saúde Públ., Rio de Janeiro, 8 (2): 157-167, abr/jun, 1992. Growth curves and mortality rates for populations of Biomphalaria glabrata and B. straminea bred under semi-natural conditions are reponed. Snail populations of the above s...

Several species of snails, including Pomacea haustrum, Marisa cornuarietis and Helisoma duryi, have been identified as probable competitors and/or predators of planorbid intermediate hosts of Schistosoma. During the last few years, studies carried out in the Caribbean region have shown reductions and even disappearances of populations of Biomphalaria glabrata and B. straminea in breeding places...

Larvicidal (against Aedes aegypti Linnaeus, 1762) and molluscicidal (against Biomphalaria glabrata Say, 1818) activities of several natural and synthetic naphthoquinones were measured, with significant results. The best larvicidal compound is 3-bromojuglone, while the better molluscicides are 2-bromo- and 3-bromo-5-acetoxy-1,4-naphthoquinones together with the 3-bromo-5-methoxy derivative. The ...