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Position specificity in the genus Coreomyces (Laboulbeniomycetes, Ascomycota)
Swedish Museum of Natural History, Department of Zoology. (Bergsten Systematic Entomology Lab)
2018 (English)In: Fungal Systematics and Evolution, ISSN 2589-3823, Vol. 1, p. 217-228Article in journal (Refereed) Published
Abstract [en]

To study position specificity in the insect-parasitic fungal genus Coreomyces (Laboulbeniaceae, Laboulbeniales),

we sampled corixid hosts (Corixidae, Heteroptera) in southern Scandinavia. We detected Coreomyces thalli in five different

positions on the hosts. Thalli from the various positions grouped in four distinct clusters in the resulting gene trees, distinctly

so in the ITS and LSU of the nuclear ribosomal DNA, less so in the SSU of the nuclear ribosomal DNA and the mitochondrial

ribosomal DNA. Thalli from the left side of abdomen grouped in a single cluster, and so did thalli from the ventral right side.

Thalli in the mid-ventral position turned out to be a mix of three clades, while thalli growing dorsally grouped with thalli from

the left and right abdominal clades. The mid-ventral and dorsal positions were found in male hosts only. The position on the left

hemelytron was shared by members from two sister clades. Statistical analyses demonstrate a significant positive correlation

between clade and position on the host, but also a weak correlation between host sex and clade membership. These results

indicate that sex-of-host specificity may be a non-existent extreme in a continuum, where instead weak preferences for one

host sex may turn out to be frequent.

Place, publisher, year, edition, pages
2018. Vol. 1, p. 217-228
Keywords [en]
Corixidae DNA Fungi host-specificity insect phylogeny
National Category
Evolutionary Biology Biological Systematics
Research subject
Diversity of life
Identifiers
URN: urn:nbn:se:nrm:diva-3083DOI: 10.3114/fuse.2018.01.09OAI: oai:DiVA.org:nrm-3083DiVA, id: diva2:1269227
Available from: 2018-12-10 Created: 2018-12-10 Last updated: 2018-12-14Bibliographically approved

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