A comparative study of mechanisms underlying digenean-snail specificity: in vitro interactions between hemocytes and digenean larvae

The Journal of Parasitology
K K Sapp, E S Loker

Abstract

A panel of 4 digenetic trematode species (Echinostoma paraensei, E. trivolvis, Schistosoma mansoni, and Schistosomatium douthitti) and 5 snail species (Biomphalaria glabrata, Helisoma trivolvis, Lymnaea stagnalis, Stagnicola elodes, and Helix aspersa) was examined to determine if known patterns of host specificity could be explained by the tendency of digenean larvae to be bound by snail hemocytes, or by the ability of larvae to influence the spreading behavior of hemocytes. In short-term (1 hr) in vitro adherence assays, there was no overall pattern to suggest that sporocysts were more likely to be bound by hemocytes from incompatible than compatible snails. Compared with the other parasites, sporocysts of E. paraensei were less likely to be bound by hemocytes from any of the snail species tested. All rediae examined, including those of another species Echinoparyphium sp., were also remarkably refractory to binding by hemocytes from any of the snails. Of all the larvae examined, only sporocysts and young daughter rediae of E. paraensei caused hemocytes to round up in their presence. This was true for hemocytes from the compatible species B. glabrata and the incompatible lymnaeid species S. elodes and L. stagnalis. The patterns...Continue Reading

References

Jan 15, 1992·Proceedings of the National Academy of Sciences of the United States of America·O Duvaux-MiretA Capron

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Citations

Feb 22, 2003·Experimental Parasitology·Alexander M Gorbushin, Tatjana G Shaposhnikova
Feb 12, 2002·International Journal for Parasitology·Kurt Buchmann, T Lindenstrøm
Jun 12, 2001·Journal of Experimental Marine Biology and Ecology·J A. PechenikH L. Simpkins
Jun 12, 2003·Infection, Genetics and Evolution : Journal of Molecular Epidemiology and Evolutionary Genetics in Infectious Diseases·M D BarguesS Mas-Coma
Jul 19, 2014·Developmental and Comparative Immunology·C M Adema, E S Loker
Apr 9, 2009·Parasitology Research·Gregory J SandlandDennis J Minchella
Oct 6, 2009·Trends in Parasitology·Kevin D Lafferty, Armand M Kuris
Jul 20, 2012·Journal of Parasitology Research·D Negrão-CorrêaP M Z Coelho
Jan 17, 2012·Journal of Invertebrate Pathology·Elżbieta Zbikowska, Anna Cichy
Jun 2, 2016·Parasitology Research·Michelle A GordyPatrick C Hanington

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Methods Mentioned

BETA
dissection
phase contrast microscopy
dissecting

Software Mentioned

SigmaStat

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