Description of a new flagellate protist Desmomonas prorhynchi gen. et sp. n. associated with problematical cell masses, parasitic in the turbellarian Prorhynchus sp. (Lecithoepitheliata)

Title:

Description of a new flagellate protist Desmomonas prorhynchi gen. et sp. n. associated with problematical cell masses, parasitic in the turbellarian Prorhynchus sp. (Lecithoepitheliata)

Creator:

Williams, Joan B.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:f80b9f25-d0ef-4b75-b43c-6c2437423eee
uuid:f80b9f25-d0ef-4b75-b43c-6c2437423eee
urnnbn:urn:nbn:cz:aba007-000ds6

Subject:

parasitic flagellate, ultrastructure, Desmomonas prorhynchi sp. n., Lecithoepitheliata, Prorhynchus, desmosome, epicuticular projections, and mitochondrial derivative

Type:

model:internalpart and TEXT

Format:

print

Description:

The fine structure is described of a new nonphotosynthctic flagellate, named Desmomonas prorhynchi gen. et sp. n„ cndoparasitic in the lecilhoepilheliate turbellarian Prorhynchus sp. The flagellates surround cell masses enveloped by a protective wall, to which adhere many small, regularly arranged cylindroid bodies; these structures are reminiscent of epicuticular projections characterising the body walls of some oligochaetes and polychaetes. The cells of a cell mass arc joined to the enveloping wall by spot hemidesmosomes. Their cytoplasm contains Golgi systems, mitochondria, fibrillar dense bodies, paired centrioles, and rod-shaped bacteria. Certain cells possess four ccntrioles. Ü. prorhynchi bears two flagella, and is attached temporarily to a cell mass by an anterior process ending at a highly organised desmosome. The flagellate plasma membrane has a fuzzy coating. Hair-like plasmalcmmal extensions project from the base of the anterior process. A mitochondrial derivative containing dense spheres lies some distance from the flagellar basal bodies. There is no Golgi apparatus. Other cytoplasmic constituents of the flagellate morphology are vacuoles, and microneme-like bodies. The two flagella, similar and without paraxial rods, arise from a flagellar pocket; neither is recurrent. The new protist cannot at present be assigned to any existing zoomastigophorean order.

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

248-256 and 10-18

Source:

Folia parasitologica | 1999 Volume:46 | Number:4

Harvested from:

CDK

Metadata only:

false