edoc

Thraustochytrids as novel parasitic protists of a marine free-living flatworm : Thraustochytrium caudivorum sp. nov. parasitizes Macrostomum lignano

Schärer, Lukas and Knoflach, Dagmar and Vizoso, Dita B. and Rieger, Gunde and Peintner, Ursula. (2007) Thraustochytrids as novel parasitic protists of a marine free-living flatworm : Thraustochytrium caudivorum sp. nov. parasitizes Macrostomum lignano. Marine biology, 152 (5). pp. 1095-1104.

[img]
Preview
PDF - Published Version
441Kb

Official URL: http://edoc.unibas.ch/dok/A5250540

Downloads: Statistics Overview

Abstract

The Labyrinthulomycota are a relatively poorly studied group of heterotrophic unicellular eukaryotes. They comprise three lineages, labyrinthulids, thraustochytrids, and aplanochytrids, which are all primarily marine organisms and considered to be important components of marine microbial communities. Recently a number of Labyrinthulomycota have been implicated as parasites of marine (but also terrestrial) plants and marine molluscs. Here we describe a new species of thraustochytrid, Thraustochytrium caudivorum sp. nov. that we have isolated from laboratory cultures of Macrostomum lignano (Rhabditophora, Macrostomorpha), a marine free-living flatworm. In these worms T. caudivorum can cause lesions, which start at the tip of the tail plate and which can lead to the dissolution of the posterior part of the animal. Although the worms can frequently cure these lesions and regenerate the lost parts, the lesions can also result in the complete dissolution of the animal. We describe this thraustochytrid based on pure agar cultures and infestations in the worm cultures. Moreover, we describe its pathological effects on the worms and its morphology using both light and electron microscopy. In addition, we report a phylogenetic analysis using a partial 18S rDNA sequence that allows us to place this new species within the thraustochytrids. Finally, we outline a protocol that allows to permanently remove the parasites from infested worm cultures. We conclude that thraustochytrids represent a novel group of parasites of free-living flatworms.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Zoologie > Evolutionary Biology (Schärer)
UniBasel Contributors:Schärer, Lukas and Vizoso, Dita B.
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Springer
ISSN:0025-3162
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:20 Sep 2017 09:18
Deposited On:22 Mar 2012 14:02

Repository Staff Only: item control page