Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/8860
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dc.contributor.authorLeung, Tommyen
dc.contributor.authorPoulin, Roberten
dc.contributor.authorKeeney, Devon Ben
dc.date.accessioned2011-11-17T15:55:00Z-
dc.date.issued2009-
dc.identifier.citationInternational Journal for Parasitology, 39(3), p. 327-331en
dc.identifier.issn1879-0135en
dc.identifier.issn0020-7519en
dc.identifier.urihttps://hdl.handle.net/1959.11/8860-
dc.description.abstractThe complex life cycle of digenean trematodes with alternating stages of asexual multiplication and sexual reproduction can generate interesting within-host population genetic patterns. Metacercarial stages found in the second intermediate host are generally accumulated from the environment. Highly mobile second intermediate hosts can sample a broad range of cercarial genotypes and accumulate genetically diverse packets of metacercariae, but it is unclear whether the same would occur in systems where the second intermediate host is relatively immobile and cercarial dispersal is the sole mechanism that can maintain genetic homogeneity at the population level. Here, using polymorphic microsatellite markers, we addressed this issue by genotyping metacercariae of the trematode 'Gymnophallus' sp. from the New Zealand cockle 'Austrovenus stutchburyi'. Despite the relatively sessile nature of the second intermediate host of 'Gymnophallus', very high genotypic diversity of metacercariae was found within cockles, with only two cockles harbouring multiple copies of a single clonal lineage. There was no evidence of population structuring at the scale of our study, suggesting the existence of a well-mixed population. Our results indicate that (i) even relatively sessile second intermediate hosts can accumulate a high diversity of genotypes and (ii) the dispersal ability of cercariae, whether passive or not, is much greater than expected for such small and short-lived organisms. The results also support the role of the second intermediate host as an accumulator of genetic diversity in the trematode life cycle.en
dc.languageenen
dc.publisherElsevier Ltden
dc.relation.ispartofInternational Journal for Parasitologyen
dc.titleAccumulation of diverse parasite genotypes within the bivalve second intermediate host of the digenean 'Gymnophallus' sp.en
dc.typeJournal Articleen
dc.identifier.doi10.1016/j.ijpara.2008.07.003en
dc.subject.keywordsZoologyen
dc.subject.keywordsInvertebrate Biologyen
dc.subject.keywordsPopulation, Ecological and Evolutionary Geneticsen
local.contributor.firstnameTommyen
local.contributor.firstnameRoberten
local.contributor.firstnameDevon Ben
local.subject.for2008060411 Population, Ecological and Evolutionary Geneticsen
local.subject.for2008060899 Zoology not elsewhere classifieden
local.subject.for2008060808 Invertebrate Biologyen
local.subject.seo2008970106 Expanding Knowledge in the Biological Sciencesen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolZoologyen
local.profile.schoolZoologyen
local.profile.emailtleung6@une.edu.auen
local.profile.emailrobert.poulin@otago.ac.nzen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20111114-153918en
local.publisher.placeUnited Kingdomen
local.format.startpage327en
local.format.endpage331en
local.identifier.scopusid58749094986en
local.peerreviewedYesen
local.identifier.volume39en
local.identifier.issue3en
local.contributor.lastnameLeungen
local.contributor.lastnamePoulinen
local.contributor.lastnameKeeneyen
dc.identifier.staffune-id:tleung6en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:9050en
dc.identifier.academiclevelAcademicen
local.title.maintitleAccumulation of diverse parasite genotypes within the bivalve second intermediate host of the digenean 'Gymnophallus' sp.en
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorLeung, Tommyen
local.search.authorPoulin, Roberten
local.search.authorKeeney, Devon Ben
local.uneassociationUnknownen
local.year.published2009en
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