Genetic diversity of the feminising microsporidian parasite Dictyocoela: New insights into host-specificity, sex and phylogeography

Wilkinson, Toby; Rock, Jenny; Whiteley, N.M.; Ovcharenko, Mykola; Ironside, Joseph E.

doi:10.1016/j.ijpara.2011.04.002

Cited by 31 publications

(46 citation statements)

References 31 publications

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“…A Dictyocoela parasite belonging to the D. berillonum clade was found in both D. villosus and co-occurring E. trichiatus, raising the possibility of transmission between these hosts. Although D. berillonum was not detected in a survey of D. villosus in its native Ponto-Caspian range (Wattier et al 2007), it has been discovered previously at high prevalence in an invasive population of the Ponto-Caspian amphipod P. robustoides in Latvia (Wilkinson et al 2011). The discovery of D. berillonum in three invasive Ponto-Caspian host, strengthens the hypothesis that this parasite also occurs in the native Ponto-Caspian range of D. villosus.…”

Section: Discussionmentioning

confidence: 58%

“…1) placed two Dictyocoela isolates from D. villosus in a clade containing isolates from various native and invasive amphipods, including isolates described as D. duebenum and D. muelleri. Sequences obtained from these isolates (Genbank accession KJ019842-KJ019843) were extremely similar to that of an isolate obtained from Dikerogammarus haemobaphes from Poland (Wilkinson et al 2011). Isolates with very similar sequences have also been obtained from the native European species Gammarus duebeni, from Ireland and the Baltic Sea.…”

Section: Parasite Diversitymentioning

confidence: 53%

“…All of the Dictyocoela isolates obtained from E. trichiatus produced sequences identical to this one. These sequences differed by only a single base pair from a sequence obtained from an isolate from Pontogammarus robustoides, another Ponto-Caspian invader (Wilkinson et al 2011). …”

Section: Parasite Diversitymentioning

confidence: 80%

“…They are widespread and abundant in native European freshwater gammarids and have also been detected in endemic amphipods of Siberia's Lake Baikal (Wilkinson et al 2011). Although this Dictyocoela parasite was also absent from samples of D. villosus within its native range (Wattier et al 2007), similar parasites have been found infecting D. haemobaphes, a close congener of D. villosus, in invasive populations in Europe (Wilkinson et al 2011). Interestingly, one Dictyocoela isolate obtained from D. villosus in Monnickendam had an identical 16S rDNA sequence to an isolate obtained from D. haemobaphes in Poland.…”

Section: Discussionmentioning

confidence: 94%

“…The 16S rRNA gene of Dictyocoela contains a hypervariable region, allowing isolates to be assigned to specific haplotypes, some of which are associated with particular host species (Wilkinson et al 2011). In order to infer their most likely origin, Dictyocoela sequences obtained from D. villosus and co-occurring amphipod species were aligned with other published Dictyocoela sequences using ClustalW (Thompson et al 1994), implemented in Bioedit 7.2.5 (Hall 1999) and corrected manually.…”

Section: Parasite Diversitymentioning

confidence: 99%

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Enemy release and genetic founder effects in invasive killer shrimp populations of Great Britain

et al. 2014

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Arundell, K., Dunn, A., Alexander, J. L., Shearman, R., Archer, N., Ironside, J. (2015). Enemy release and genetic founder effects in invasive killer shrimp populations of Great Britain. Biological Invasions, 17 (5), 1439-1451. Document embargo until 04/11/2015The predatory ?killer shrimp? Dikerogammarus villosus invaded Britain from mainland Europe in 2010. Originating in the Ponto-Caspian region, this invader has caused significant degradation of European freshwater ecosystems by predating and competitively excluding native invertebrate species. In contrast to continental Europe, in which invasions occurred through the migration of large numbers of individuals along rivers and canals, the invasion of Great Britain must have involved long distance dispersal across the sea. This makes the loss of genetic diversity and of debilitating parasites more likely. Analysis of nuclear microsatellite loci and mitochondrial DNA sequences of D. villosus samples from the four known populations in Britain reveal loss of rare alleles, in comparison to reference populations from the west coast of continental Europe. Screening of the British D. villosus populations by PCR detected no microsporidian parasites, in contrast with continental populations of D. villosus and native amphipod populations, most of which are infected with microsporidia. These findings suggest that the initial colonisation of Great Britain and subsequent long distance dispersal within Britain were associated with genetic founder effects and enemy release due to loss of parasites. Such effects are also likely to occur during future long-distance dispersal events of D. villosus to Ireland or North America.authorsversionPeer reviewe

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Section: Discussionmentioning

confidence: 58%

Section: Parasite Diversitymentioning

confidence: 53%

Section: Parasite Diversitymentioning

confidence: 80%