Cationic responses of organs and haemolymph of Biomphalaria pfeifferi (Krauss), Biomphalaria glabrata (Say) and Helisoma trivolvis (Say) (Gastropoda: Planorbirdae) to cationic alterations of the medium

Hydrobiologia ◽  
1980 ◽  
Vol 68 (2) ◽  
pp. 119-138 ◽  
Author(s):  
W. K. Nduku ◽  
A. D. Harrison
Keyword(s):  
Biomphalaria Glabrata ◽  
Biomphalaria Pfeifferi ◽  
Helisoma Trivolvis

Evidence from two planorbid snails of a complex and dedicated response to digenean (echinostome) infection

Parasitology ◽  
1999 ◽  
Vol 119 (4) ◽  
pp. 395-404 ◽  
Author(s):  
C. M. ADEMA ◽  
L. A. HERTEL ◽  
E. S. LOKER
Keyword(s):  
Staphylococcus Epidermidis ◽  
Biomphalaria Glabrata ◽  
The Other ◽  
Digenetic Trematode ◽  
Snail Species ◽  
Helisoma Trivolvis ◽  
General Ability ◽  
Digenean Species ◽  
Reactive Plasma ◽  
Echinostoma Trivolvis

The planorbid snail Biomphalaria glabrata responded to exposure to either the compatible digenetic trematode Echinostoma paraensei or the incompatible species Echinostoma trivolvis by producing increased amounts of several distinctive plasma polypeptides. These polypeptides characteristically precipitated from plasma when mixed with secreted–excreted products (SEP) of sporocysts or rediae from either digenean species. In contrast, control snails, or snails that had been wounded or infected with bacteria (Serratia marcesens or Staphylococcus epidermidis) showed no obvious plasma alterations and no precipitates formed when their plasma was mixed with SEP. Another planorbid species, Helisoma trivolvis, which displays reverse compatibility for the echinostome species used, also responded to exposure to both echinostomes by increased production of plasma polypeptides that precipitated in the presence of SEP. With some individual variation, these 2 snail species synthesized SEP-reactive plasma polypeptides forming diffuse bands centred at 53, 65, 80–120 and 200 kDa (the latter absent in Helisoma trivolvis). The 53 kDa polypeptides had not been observed before, whereas the others have been noted from B. glabrata. The diffuse 65 kDa band was strongly bound by anti-fibrinogen antibodies, supportive of earlier studies indicating it contains fibrinogen-related domains. The other specified polypeptides were also bound by these antibodies raising the possibility that they too contain fibrinogen domains. The results are suggestive of a general ability of these 2 planorbid snails to detect the presence of echinostomes even if the latter are subsequently incapable of development. The complex response they then mount, one not evoked by other challenges such as wounding or bacterial infection, may represent a dedicated response to a frequently encountered group of pathogenic parasites, the digeneans (echinostomes).

Experimental Exposure of Helisoma trivolvis and Biomphalaria glabrata (Gastropoda) to Ribeiroia ondatrae (Trematoda)

2011 ◽  
Vol 97 (6) ◽  
pp. 1055-1061 ◽  
Author(s):  
Miranda D Redmond ◽  
Richard B Hartson ◽  
Jason T Hoverman ◽  
Christina N De Jesús-Villanueva ◽  
Pieter T. J Johnson
Keyword(s):  
Biomphalaria Glabrata ◽  
Experimental Exposure ◽  
Helisoma Trivolvis

scholarly journals Elevage de Biomphalaria glabrata, Say, au laboratoire

1977 ◽  
Vol 30 (3) ◽  
pp. 293 ◽  
Author(s):  
M. Graber ◽  
Jacques Euzéby ◽  
J. Gevrey
Keyword(s):  
Schistosoma Mansoni ◽  
Lutte Biologique ◽  
Biomphalaria Glabrata ◽  
Biomphalaria Pfeifferi ◽  
Schistosoma Bovis

Les auteurs décrivent une méthode d'élevage de Biomphalaria glabrata, Say, au laboratoire, méthode nécessitant l'emploi successif et, dans des conditions qui sont bien précisées, de bacs de ponte et de bacs de croissance. Bien que concernant un Planorbe hôte intermédiaire de Schistosoma mansoni, l'agent de la bilharziose intestinale humaine, les renseignements fournis présentent un certain intérêt en médecine vétérinaire, car ils peuvent, dans leur ensemble, être transposés à d'autres mollusques vecteurs de Trématodoses animales (Fasciolose, paramphistomose, bilharzioses à Schistosoma bovis et à Schistosoma mattheei): Limnaea natalensis, Biomphalaria pfeifferi, Bulins appartenant aux genres Physopsis, Bulinus s. str. (toute la série polyploïde) et Pyrgophysa. En outre, lorsque les conditions climatiques s'y prêtent, cette méthode, simple et pratique, permet de disposer constamment, et quelle que soit la saison, d'importantes populations de Biomphalaria glabrata destinées à diverses recherches d'ordre général, notamment les essais de molluscicides et la lutte biologique contre les mollusques vecteurs, recherches qui intéressent à la fois la médecine humaine et la médecine vétérinaire tropicale notamment

Sign in / Sign up

Export Citation Format

Share Document