Another Potential Intermediate Host Snail for Schistosoma mansoni in Puerto Rico

1961 ◽  
Vol 47 (1) ◽  
pp. 64
Author(s):  
Charles S. Richards
Keyword(s):  
Puerto Rico ◽  
Schistosoma Mansoni ◽  
Intermediate Host ◽  
Intermediate Host Snail ◽  
Host Snail

Molluscicidal activity of polyvinylpyrrolidone (PVP)-functionalized silver nanoparticles to Biomphalaria glabrata: Implications for control of intermediate host snail of Schistosoma mansoni

Acta Tropica ◽  
2020 ◽  
Vol 211 ◽  
pp. 105644 ◽  
Author(s):  
Paula Sampaio Araújo ◽  
Maxwell Batista Caixeta ◽  
Rafaella da Silva Brito ◽  
Bruno Bastos Gonçalves ◽  
Sueli Maria da Silva ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Schistosoma Mansoni ◽  
Intermediate Host ◽  
Biomphalaria Glabrata ◽  
Intermediate Host Snail ◽  
Host Snail ◽  
Molluscicidal Activity

scholarly journals Behavior of Biomphalaria glabrata, the intermediate host snail of Schistosoma mansoni, at different depths in water in laboratory conditions

1987 ◽  
Vol 82 (2) ◽  
pp. 197-208 ◽  
Author(s):  
P. Jurberg ◽  
V. T. Schall ◽  
J. V. Barbosa ◽  
M. J. Gatti ◽  
M. S. Soares
Keyword(s):  
Schistosoma Mansoni ◽  
Intermediate Host ◽  
Biomphalaria Glabrata ◽  
Food Control ◽  
Intermediate Host Snail ◽  
Host Snail ◽  
Laboratory Conditions ◽  
Different Depths ◽  
Experimental Group ◽  
As If

Using three columns of different depths (1.10m, 8.40m and 10.40m), we investigated the possibility of Biomphalaria glabrata moving towards deep regions. In the 1.10m column, we noted that locomotion can occur in two manners: 1) when the foot is in contact with the substrate: a) sliding descent; b) sliding ascent; c) creeping descent; d) creeping ascent, 2) when the foot is not in contact with the substrate: a) sudden descent without emission of air bules; b) sudden descent with emission of air bules; c) sudden ascent. In the 8.40m column containing food on the bottom (experimental group), the snails remained longer at this depth when compared to those of the group which received no food (control). The sliding behavior was characteristic of locomotion occurring at 0 to 1m both in upward and downward directions. Creeping behavior was typical for the ascent of the snails that reached deeper levels. When the snails were creeping, the shell remained hanging as if it were heavier, a fact that may have been due to water entering the pulmonary chamber. In the 10.40m column, the snails slid downward to a depth of 4m or descended suddenly all the way to the bottom. Ascent occurred by creeping from the bottom to the surface. In the 8.40m and 10.40m columns, copulation, feeding and oviposition occurred at the deepest levels.

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