Range limits and parasite prevalence in a freshwater snail

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dc.contributor.author Briers, Robert A.
dc.date.accessioned 2009-11-11T10:14:03Z
dc.date.available 2009-11-11T10:14:03Z
dc.date.issued 2003-11-07
dc.identifier.citation Briers , R A 2003 , ' Range limits and parasite prevalence in a freshwater snail ' Proceedings of the Royal Society B: Biological Sciences , vol 270 , pp. 178- . , 10.1098/rsbl.2003.0046 en
dc.identifier.issn 0962-8452
dc.identifier.other PURE: 138800
dc.identifier.other dspace: 2160/3492
dc.identifier.uri http://hdl.handle.net/2160/3492
dc.description Briers, R. A. (2003). Range limits and parasite prevalence in a freshwater snail.   Proceedings of the Royal Society of London Series B - Biological Sciences, 270, (Supplement 2), S178-S180. Sponsorship: Conchological Society of Great Britain and Ireland en
dc.description.abstract Geographical range limits are thought to be set by species' physiological or ecological adaptation to abiotic factors, but the importance of biotic factors such as parasitism in determining range limits has not been well explored. In this study the prevalence of trematode parasitism in populations of a freshwater gastropod snail, Lymnaea stagnalis, increased sharply as this species approached its western UK range limit. The likelihood of trematode infection increased with snail size, but high prevalence at the range edge was not a result of interpopulation variation in snail size. Changes in population growth rates resulting from high rates of parasitism at the range edge could contribute to range limitation. The mechanism driving high rates of parasitism at the range edge is not clear, but changes in abiotic factors towards the range limit may influence snail life history and immune response to trematode infection, indirectly altering the prevalence of parasites in marginal host populations. en
dc.language.iso eng
dc.relation.ispartof Proceedings of the Royal Society B: Biological Sciences en
dc.title Range limits and parasite prevalence in a freshwater snail en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1098/rsbl.2003.0046
dc.contributor.institution Aberystwyth University en
dc.contributor.institution Institute of Biological, Environmental and Rural Sciences en
dc.description.status Peer reviewed en


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