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

Direct link
New small dictyostelids from seasonal rainforests of Central America
Show others and affiliations
2013 (English)In: Mycologia, ISSN 0027-5514, E-ISSN 1557-2536, Vol. 105, no 3, 610-635 p.Article in journal (Refereed) Published
Abstract [en]

Ten small dictyostelids isolated from samples collected from the surface humus layer of seasonal rainforests of Belize and Guatemala were studied morphologically, and nine were found to represent distinct species, all with an average height of < 2 mm (0.5-3.5 mm). Although their fruiting bodies (sorocarps) closely resemble one another, the nine species differ in their patterns of aggregation, stream pattern, branching development, formation of microcysts, spore shape, presence or absence of spore granules and their distribution, as well as in the shapes and behavior of their sorogens and myxamoebae. These stable morphological features were sufficient to recognize nine new species of small dictyostends, one with two varieties. SSU rDNA sequences were generated for all these new isolates, and phylogenetic analyses of these sequences show these new isolates belong to Dictyostelid group 3. As a result of this and other recent studies, the concept of what constitutes a species in the dictyostelids has become much more restricted and well defined, in as much as some of the morphological and behavioral patterns now being observed were overlooked in the past. The extent, flow direction and conformation of streaming within the group varies from simple aggregation mounds with no streams to short streams, to somewhat longer streams and finally to well developed streams. Each of these is characterized by a particular set of distinguishing features.

Place, publisher, year, edition, pages
2013. Vol. 105, no 3, 610-635 p.
Keyword [en]
aggregation, dictyostelids, morphology, phylogeny, social amoebae
National Category
Natural Sciences
URN: urn:nbn:se:uu:diva-203307DOI: 10.3852/11-332ISI: 000319370600008OAI: oai:DiVA.org:uu-203307DiVA: diva2:636105
Available from: 2013-07-08 Created: 2013-07-08 Last updated: 2013-07-08Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Romeralo, Maria
By organisation
Systematic Biology
In the same journal
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 250 hits
ReferencesLink to record
Permanent link

Direct link