Maintenance of Biomphalaria Glabrata Infected with Schistosoma Mansoni in Artificial Spring Water, Deionized Water, or Conditioned Tap Water

2013 ◽  
Vol 80 (1) ◽  
pp. 118-119 ◽  
Author(s):  
A. E. Balaban ◽  
B. Fried
Keyword(s):  
Schistosoma Mansoni ◽  
Tap Water ◽  
Biomphalaria Glabrata ◽  
Spring Water ◽  
Deionized Water

scholarly journals Influence of saccharose on the development of cercariae from Schistosoma mansoni strains BH and SJ

2005 ◽  
Vol 65 (1) ◽  
pp. 43-49
Author(s):  
T. I. B Bruno ◽  
E. M Zanotti-Magalhães ◽  
L. A. Magalhães ◽  
J. F. Carvalho
Keyword(s):  
Survival Rate ◽  
Schistosoma Mansoni ◽  
Larval Development ◽  
Energy Supply ◽  
Tap Water ◽  
Mouse Skin ◽  
Biomphalaria Glabrata ◽  
Infection Rates ◽  
Lower Survival Rate ◽  
Significant Difference

The development of cercariae from Schistosoma mansoni strains BH and SJ in Biomphalaria glabrata and Biomphalaria tenagophila treated with saccharose was studied. The molluscs were maintained in dechlorinated tap water containing 0.01% saccharose. After one week of treatment with saccharose, B. glabrata and B. tenagophila were exposed to ten S. mansoni miracidia, from BH and SJ strains respectively. Control snails of both species were maintained in dechlorinated tap water without saccharose and exposed to the same number of miracidia. There was no significant difference between the infection rates of snails treated or not with saccharose. However, the two groups of B. glabrata had significantly greater infection rates than the corresponding B. tenagophila groups. Molluscs treated with saccharose had a lower survival rate, with the greatest mortality occurring immediately before and at the beginning of cercariae release. Treatment with saccharose did not result in the release of more cercariae, but larvae from molluscs so treated showed a greater capacity to penetrate mouse skin, which was attributed to the greater energy supply during larval development in the mollusc.

Emergence of cercariae of Echinostoma caproni and Schistosoma mansoni from Biomphalaria glabrata under different laboratory conditions

2002 ◽  
Vol 76 (4) ◽  
pp. 369-371 ◽  
Author(s):  
B. Fried ◽  
R. Laterra ◽  
Y. Kim
Keyword(s):  
Schistosoma Mansoni ◽  
Feeding Behaviour ◽  
Biomphalaria Glabrata ◽  
Spring Water ◽  
Echinostoma Caproni ◽  
Laboratory Conditions

AbstractRelease of Echinostoma caproni cercariae and Schistosoma mansoni from experimentally infected Biomphalaria glabrata snails maintained under different laboratory conditions was studied. Infected snails were isolated individually for 1 h in Stender dishes containing 5 ml of artificial spring water and the number of cercariae released during this time was recorded. Of numerous conditions tested, the addition of lettuce, the use of water conditioned by B. glabrata snails and a temperature of 35°C significantly increased the release of E. caproni cercariae. A significant increase in cercarial release of S. mansoni was seen only in cultures fed lettuce. A temperature of 12°C caused a significant decrease in cercarial release of both E. caproni and S. mansoni. Increased snail activity associated with feeding behaviour was probably responsible for the enhanced cercarial sheds observed in this study.

scholarly journals Activities of naphthoquinones against Aedes aegypti (Linnaeus, 1762) (Diptera: Culicidae), vector of dengue and Biomphalaria glabrata (Say, 1818), intermediate host of Schistosoma mansoni

Acta Tropica ◽  
2009 ◽  
Vol 111 (1) ◽  
pp. 44-50 ◽  
Author(s):  
Karlos A.L. Ribeiro ◽  
Cenira Monteiro de Carvalho ◽  
Maria Teresa Molina ◽  
Estelita Pereira Lima ◽  
Eulogio López-Montero ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Schistosoma Mansoni ◽  
Intermediate Host ◽  
Biomphalaria Glabrata
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