Multi-parasite host susceptibility and multi-host parasite infectivity: a new approach of the Biomphalaria glabrata/Schistosoma mansoni compatibility polymorphism.
In this study, we analyze the degree of susceptibility/un-susceptibility of five strains of Biomphalaria glabrata from different geographical origins successively challenged with a panel of 4 Schistosoma mansoni strains. A total of 20 homopatric and heteropatric host-parasite combinations were tested with exposure doses of 1, 10, 20, 30 and 50 miracidia per individual host. By doing this, we characterized each B. glabrata strain by its "multi-parasite susceptibility phenotype" that reflects better the efficiency of their defense mechanism against not only one, but a diversity of schistosome stocks. In the same time, all the S. mansoni strains used were characterized, by their "multi-host infectivity phenotype" that reflects the level of infectivity they display when confronted to diverse snail populations. Based on these results it is possible to select different homogenous stocks of snails with different spectrum of susceptibility/un-susceptibility for several parasite strains. This will be a useful tool for future functional studies conducted to understand the genetics and molecular basis of the compatibility polymorphism in this host/parasite model.
CNRS, UMR 5244, Ecologie et Evolution des Interactions (2EI), Université de Perpignan, France; Université de Perpignan via Domitia, 52, Ave Paul Alduy, 66860 Perpignan Cedex, France. Electronic address: theron@univ-perp.fr.
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Theron
CNRS, UMR 5244, Ecologie et Evolution des Interactions (2EI), Université de Perpignan, France; Université de Perpignan via Domitia, 52, Ave Paul Alduy, 66860 Perpignan Cedex, France.
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Rognon
CNRS, UMR 5244, Ecologie et Evolution des Interactions (2EI), Université de Perpignan, France; Université de Perpignan via Domitia, 52, Ave Paul Alduy, 66860 Perpignan Cedex, France.
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Gourbal
CNRS, UMR 5244, Ecologie et Evolution des Interactions (2EI), Université de Perpignan, France; Université de Perpignan via Domitia, 52, Ave Paul Alduy, 66860 Perpignan Cedex, France.
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Mitta
D000820:Animal Diseases / Q000469:parasitology; D000818:Animals; D001700:Biomphalaria / Q000469:parasitology*; D004198:Disease Susceptibility; D006790:Host-Parasite Interactions; D012550:Schistosoma mansoni / Q000502:physiology*; D012555:Schistosomiasis mansoni / Q000662:veterinary
Biomphalaria glabrata; Compatibility polymorphism; Matching phenotypes; Schistosoma mansoni