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Experimental evidence for a new transmission route in a parasitic mite and its mucus-dependent orientation towards the host snail

  • H. U. SCHÜPBACH (a1) and B. BAUR (a1)

The route of transmission and host finding behaviour are fundamental components of a parasite's fitness. Riccardoella limacum, a haematophagous mite, lives in the mantle cavity of helicid land snails. To date it has been assumed that this parasitic mite is transmitted during courtship and mating of the host. Here we present experimental evidence for a new transmission route in the host snail Arianta arbustorum. Parasite-free snails were kept on soil on which previously infected host snails had been maintained for 6 weeks. R. limacum was successfully transmitted via soil without physical contact among hosts in 10 out of 22 (45·5%) cases. In a series of experiments we also examined the off-host locomotion of R. limacum on snail mucus and control substrates using an automated camera system. Parasitic mites showed a preference to move on fresh mucus. Our results support the hypothesis that R. limacum uses mucus trails to locate new hosts. These findings should be considered in commercial snail farming and when examining the epidemiology of wild populations.

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R. A. Baker (1970 a). Studies on the life history of Riccardoella limacum (Schrank) (Acari, Trombidiformes). Journal of Natural History 4, 511519.

R. A. Baker (1970 b). The food of Riccardoella limacum (Schrank) (Acari, Trombidiformes) and its relationship with pulmonate molluscs. Journal of Natural History 4, 521530.

G. M. Barker (ed.) (2001). The Biology of Terrestrial Molluscs. CABI Publishing, Wallingsford, Oxon., UK.

A. Baur and B. Baur (2005). Interpopulation variation in the prevalence and intensity of parasitic mite infection in the land snail Arianta arbustorum. Invertebrate Biology 124, 194201. doi: 10.1111/j.1744-7410.2005.00019.x.

B. Baur (1992). Random mating by size in the simultaneously hermaphroditic land snail Arianta arbustorum – experiments and an explanation. Animal Behaviour 43, 511518.

B. Baur and C. Raboud (1988). Life-history of the land snail Arianta arbustorum along an altitudinal gradient. Journal of Animal Ecology 57, 7187.

M. Boots and M. Mealor (2007). Local interactions select for lower pathogen infectivity. Science 315, 12841286. doi: 10.1126/science.1137126.

J. J. Bull (1994). Virulence. Evolution 48, 14231437.

C. Combes (2001). Parasitism: The Ecology and Evolution of Intimate Interactions. The University of Chicago Press, Chicago, USA.

J. Crossan , S. Paterson and A. Fenton (2007). Host availability and the evolution of parasite life-history strategies. Evolution 61, 675684. doi: 10.1111/j.1558-5646.2007.00057.x.

D. Ebert and E. A. Herre (1996). The evolution of parasitic diseases. Parasitology Today 12, 96101.

A. Fenton , J. P. Fairbairn , R. Norman and P. J. Hudson (2002). Parasite transmission: reconciling theory and reality. Journal of Animal Ecology 71, 893905.

A. Fenton and S. A. Rands (2004). Optimal parasite infection strategies: a state-dependent approach. International Journal for Parasitology 34, 813821. doi: 10.1016/j.ijpara.2004.02.003.

S. A. Frank and P. Schmid-Hempel (2008). Mechanisms of pathogenesis and the evolution of parasite virulence. Journal of Evolutionary Biology 21, 396404. doi: 10.1111/j.1420-9101.2007.01480.x.

V. V. Ganusov and R. Antia (2003). Trade-offs and the evolution of virulence of microparasites: do details matter? Theoretical Population Biology 64, 211220. doi: 10.1016/S0040-5809(03)00063-7.

J. Hertel , A. Holweg , B. Haberl , M. Kalbe and W. Haas (2006). Snail odour-clouds: spreading and contribution to the transmission success of Trichobilharzia ocellata (Trematoda, Digenea) miracidia. Oecologia 147, 173180. doi: 10.1007/s00442-005-0239-5.

B. R. Krasnov , I. S. Khokhlova , I. Oguzoglu and N. V. Burdelova (2002). Host discrimination by two desert fleas using an odour cue. Animal Behaviour 64, 3340. doi: 10.1006/anbe.2002.3030.

T. Robb and M. R. Forbes (2005). Success of ectoparasites: how important is timing of host contact? Biology Letters 1, 118120. doi: 10.1098/rsbl.2004.0271.

H. U. Schüpbach and B. Baur (2008). Parasitic mites influence fitness components of their host, the land snail Arianta arbustorum. Invertebrate Biology 127, 350356 doi:10.1111/j.1744-7410.2008.00138.x.

F. A. Turk and S. M. Phillips (1946). A monograph of the slug mite – Riccardoella limacum (Schrank). Proceedings of the Zoological Society of London 115, 448472.

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