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

Direct link
Xenoturbella (Deuterostomia) probably feeds on dissolved organic matter
Uppsala University, Museums etc., Museum of Evolution.
2008 (English)In: Marine Biology Research, ISSN 1745-1000, Vol. 4, no 5, 384-391 p.Article in journal (Refereed) Published
Abstract [en]

The enigmatic deuterostome Xenoturbella does ubiquitously contain exogenous nucleic acids. This has been used in several papers as proof of selective feeding by Xenoturbella on nuculid bivalves. However, their feeding biology is unknown and exogenous nucleic acids might not originate from their main nutrient source. I have examined the possible pathways of nutrient uptake. The animals neither took up cells nor dissolved dyes through the 'mouth'. Instead, they possessed extensive pinocytosis through the epidermis. Therefore, it is probable that the main source of nutrients is dissolved organic matter uptaken through the epidermis. This does not exclude that phagocytosis in the gastrodermis does occur, e.g. due to direct expose of the gastrodermis during asexual reproduction. The ubiquitously present exogenous nucleic acids in Xenoturbella probably do originate from such events and not from their main food source.

Place, publisher, year, edition, pages
2008. Vol. 4, no 5, 384-391 p.
Keyword [en]
exogenous nucleic acids, feeding biology, nutrient uptake, pinocytosis and phagocytosis, Xenoturbella
National Category
Biological Sciences
URN: urn:nbn:se:uu:diva-107877DOI: 10.1080/17451000802036085ISI: 000259696000007OAI: oai:DiVA.org:uu-107877DiVA: diva2:233370
Available from: 2009-08-31 Created: 2009-08-31 Last updated: 2009-09-01Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
Museum of Evolution
In the same journal
Marine Biology Research
Biological Sciences

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 197 hits
ReferencesLink to record
Permanent link

Direct link