Presence of multiparasite infections within individual colonies of leaf-cutter ants

dc.contributor.authorTaerum, Stephen J.
dc.contributor.authorCafaro, Matias J.
dc.contributor.authorCurrie, Cameron Robert
dc.date.accessioned2011-02-16T18:27:42Z
dc.date.available2011-02-16T18:27:42Z
dc.date.issued2010
dc.description.abstractHost-parasite dynamics can be altered when a host is infected by multiple parasite genotypes. The different strains of parasite are expected to compete for the limited host resources, potentially affecting the survival and reproduction of the host as well as the infecting parasites. Fungus-growing ants, including the well-known leaf-cutters, are an emerging model system for studying the evolution and ecology of symbiosis and host-parasite dynamics. We examine whether the fungus gardens of leaf-cutter ants can be simultaneously infected by multiple strains of the fungal pathogen Escovopsis. Intensive sampling of Escovopsis was conducted from individual gardens, as well as between different garden chambers within individual colonies of leaf-cutting ants. Isolates obtained were genotyped by DNA sequencing. We found that, minimally, 67% of the individual colonies of the leaf-cutter ant genera Atta and Acromyrmex and 50% of the At. colombica garden chambers studied were simultaneously infected by multiple distinct Escovopsis strains. Experimental challenges showed that different Escovopsis strains do not exhibit obvious antagonism toward each other, suggesting that coinfecting strains of the parasite do not engage in interference competition, although interactions were not studied at the cellular level. Further research is needed to understand interparasite interactions between coinfecting Escovopsis strains and to understand the impact of multiparasite infections on the survival of leaf-cutter ant gardens.
dc.format.extent105–113
dc.identifier0046-225X
dc.identifier.citationTaerum, Stephen J., Cafaro, Matias J., and Currie, Cameron Robert. 2010. "<a href="https://repository.si.edu/handle/10088/12196">Presence of multiparasite infections within individual colonies of leaf-cutter ants</a>." <em>Environmental Entomology</em>, 39, (1) 105–113. <a href="https://doi.org/10.1603/EN09137">https://doi.org/10.1603/EN09137</a>.
dc.identifier.issn0046-225X
dc.identifier.urihttp://hdl.handle.net/10088/12196
dc.publisherEntomological Society of America
dc.relation.ispartofEnvironmental Entomology 39 (1)
dc.titlePresence of multiparasite infections within individual colonies of leaf-cutter ants
dc.typearticle
sro.description.unitSTRI
sro.description.unitNH-EOL
sro.identifier.doi10.1603/EN09137
sro.identifier.itemID81727
sro.identifier.refworksID89136
sro.identifier.urlhttps://repository.si.edu/handle/10088/12196
sro.publicationPlaceCary, North Carolina

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