uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Diversity of dictyostelid social amoebae in high latitude habitats of Northern Sweden
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Systematic Biology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Systematic Biology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Systematic Biology.
2013 (English)In: Fungal diversity, ISSN 1560-2745, E-ISSN 1878-9129, Vol. 58, no 1, 185-198 p.Article in journal (Refereed) Published
Abstract [en]

The dictyostelid social amoebae (Dictyostelia) occur in terrestrial habitats worldwide. It has been observed previously that their diversity decreases with increasing latitude and altitude. Here we look at dictyostelid diversity in the high latitude habitats of Northern Sweden. Dictyostelids were recovered from soil samples using traditional plating methods and then identified using morphological characters and molecular sequence (small subunit ribosomal RNA) data. In total, nine species were recovered, including two new species, described herein as Dictyostelium barbibulus and Polysphondylium fuscans. The species diversity found here is discussed in relation to previous findings in the area as well as other high-latitude studies, and biogeographical patterns are examined. The total number of species found in Northern Sweden is lower than the numbers recorded for regions further south in Europe, a finding consistent with a latitudinal gradient of species diversity. Our findings highlight the benefit of using molecular data for accurate species identification in Dictyostelia and the need for a continued sampling effort to better understand their diversity and distribution, especially in high latitude habitats.

Place, publisher, year, edition, pages
2013. Vol. 58, no 1, 185-198 p.
National Category
Biological Systematics
Identifiers
URN: urn:nbn:se:uu:diva-187570DOI: 10.1007/s13225-012-0208-3ISI: 000313366900012OAI: oai:DiVA.org:uu-187570DiVA: diva2:575149
Available from: 2012-12-07 Created: 2012-12-07 Last updated: 2017-12-07Bibliographically approved
In thesis
1. Diversity Underfoot: Systematics and Biogeography of the Dictyostelid Social Amoebae
Open this publication in new window or tab >>Diversity Underfoot: Systematics and Biogeography of the Dictyostelid Social Amoebae
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Dictyostelids (Amoebozoa) are a group of social amoebae consisting of approximately 150 species, which are found in terrestrial habitats worldwide. They are divided into eight major clades based on molecular phylogeny, and within these clades are many species complexes. Some species are seemingly cosmopolitan in distribution, while others are geographically restricted. In this thesis dictyostelids were recovered from high latitude habitats (soils in Sweden and Iceland) as well as from the soles of shoes. Morphological characters and DNA sequence analyses were used to identify isolates that were recovered and delimit new species, as well as to investigate the monophyly of Dictyostelium aureostipes. Nine species were reported from Northern Sweden and four from Iceland. Among the isolates recorded in Sweden were two new species, described as D. barbibulus and Polysphondylium fuscans. P. fuscans was among the four species recovered from footwear, contributing evidence for anthropogenic transport of dictyostelids. Ecological patterns were assessed using linear regression and generalized linear models. The ecological analyses of dictyostelids recovered from Iceland indicate that these organisms are most frequently found in soils of near-neutral pH, but also exhibit a species richness peak in moderately acidic soils. These analyses indicate that in Iceland dictyostelid species richness decreases with altitude, and in the northern hemisphere the species richness increases with decreasing latitude. A three-region analysis of the D. aureostipes species complex indicated that this species is in fact made up of at least five phylogenetically distinct clades, and in light of this the group is in need of taxonomic revision. These results indicate that the dictyostelid species richness is higher than previously known, especially in high-latitude regions, and that even seemingly well-defined species may harbour cryptic diversity. Presently, species ranges may be expanding via anthropogenic dispersal but despite this, the dictyostelids are found to exhibit biogeographic trends well known from macroorganisms, such as a latitudinal gradient of species richness.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2013. 56 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 1097
Keyword
Amoeba, biogeography, cryptic species, dictyostelid, latitudinal gradient, multicellularity, protist, social amoeba, phylogenetics, systematics, new species
National Category
Biological Systematics Microbiology
Research subject
Biology with specialization in Systematics
Identifiers
urn:nbn:se:uu:diva-210074 (URN)978-91-554-8804-8 (ISBN)
Public defence
2013-12-13, Lindahlsalen, Norbyvägen 18D, Uppsala, 10:00 (English)
Opponent
Supervisors
Available from: 2013-11-22 Created: 2013-10-30 Last updated: 2014-06-16

Open Access in DiVA

No full text

Other links

Publisher's full text

Authority records BETA

Perrigo, AllisonBaldauf, SandraRomeralo, Maria

Search in DiVA

By author/editor
Perrigo, AllisonBaldauf, SandraRomeralo, Maria
By organisation
Systematic Biology
In the same journal
Fungal diversity
Biological Systematics

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 496 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf