Development of Myxobolus dispar (Myxosporea: Myxobolidae) in an oligochaete alternate host, Tubifex tubifex

Title:

Development of Myxobolus dispar (Myxosporea: Myxobolidae) in an oligochaete alternate host, Tubifex tubifex

Creator:

Molnár, Kálmán, El-Mansy, Amina, Székely, Csaba, and Baska, Ferenc

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:1ae2d777-1113-4e62-9570-40ac97968598
uuid:1ae2d777-1113-4e62-9570-40ac97968598
urnnbn:urn:nbn:cz:aba007-000dql

Subject:

Myxobolus dispar, Myxozoa, raabeia stages, development, and Tubifex tubifex

Type:

model:internalpart and TEXT

Format:

print

Description:

The development of Myxobolus dispar Thélohan, 1895, a myxosporean parasite of the gills of common carp (Cyprinus carpio L.) was studied in experimentally infected oligochaetes Tubifex tubifex Muller. After infection of uninfected tubificids with mature spores of M. dispar, development of actinosporean stages was first observed light microscopically 21 days after initial exposure. In histological sections, early pansporocysts were located in the gut epithelium of experimental oligochaetes, while advanced stages occupied mostly the outer layers of the gut and the coelozoic space. Mature pansporocysts, each containing 8 raabeia spores, appeared 199 days after initial exposure. Following damage of the intestinal wall and rupture of the pansporocysts, free actinosporean stages were found in the gut lumen of the oligochaetes. Actinospores of hi. dispar emerged from the worms after 217 days of intra-oligochaete development. They were floating in the water and showed a unique raabeia form. Each raabeia spore had three pyriform polar capsules and a cylindrical-shaped sporoplasm with approximately 32 secondary cells. The spore body joined the three caudal projections without a style. Caudal projections were bifurcated at the end and the two main branches had further small bifurcations. The total length of the raabeia spore was approximately 158 pm. The prevalence of infection in 240 experimentally infected Tubifex specimens was 99.2%. No infection was found in the control oligochaetes.

Language:

English

Rights:

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

Coverage:

15-21 and 17-23

Source:

Folia parasitologica | 1999 Volume:46 | Number:1

Harvested from:

CDK

Metadata only:

false