Comparative ultrastructure of the actinosporean stages of Myxobolus brarnae and M. pseudodispar (Myxozoa)

P. Alvarez-Pellitero, K. Molnár, A. Sitjà-Bobadilla, C. Székely

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12 Citations (Scopus)

Abstract

The ultrastructrure of triactinospores and other developmental stages obtained after the experimental infection of the oligochaete Tubifex tubifex with myxospores of Myxobolus bramae and Myxobolus pseudodispar was studied. In both cases, pansporocysts harbouring spores and the remnants of polar bodies were found in the gut epithelium of the tubificids. Other stages were also seen in M. pseudodispar. Capsulogenic cells surrounded the apical part of the sporoplasm in M. bramae whereas they were located separately in M. pseudodispar. The sporoplasm of M. bramae was elongated and was filled with numerous infective cells, whereas secondary cells rarely appeared in the sporoplasm of M. pseudodispar, which contained large groups of β-glycogen granules. Other M. pseudodispar stages included pansporocysts harbouring pregametic or gametic stages, zygotes, or the initial steps of sporogenesis. The presence of first- and second-order polar bodies indicates the existence of meiosis. In the spores of M. pseudodispar, the presence of desmosome-like junctions between the capsulogenic cells, and hemidesmosome-like junctions between the capsulogenic cells and the inner membrane of the valvogenic cells, is remarkable.

Original languageEnglish
Pages (from-to)198-207
Number of pages10
JournalParasitology Research
Volume88
Issue number3
DOIs
Publication statusPublished - 2002

Fingerprint

Myxobolus
Myxozoa
ultrastructure
Polar Bodies
Spores
cells
spores
Hemidesmosomes
Tubifex tubifex
desmosomes
Desmosomes
Zygote
Oligochaeta
Meiosis
zygote
sporulation
Glycogen
meiosis
glycogen
cell membranes

ASJC Scopus subject areas

  • Parasitology

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Comparative ultrastructure of the actinosporean stages of Myxobolus brarnae and M. pseudodispar (Myxozoa). / Alvarez-Pellitero, P.; Molnár, K.; Sitjà-Bobadilla, A.; Székely, C.

In: Parasitology Research, Vol. 88, No. 3, 2002, p. 198-207.

Research output: Contribution to journalArticle

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