Intraoligochaete development of Myxobolus intimus (Myxosporea: Myxobolidae), a gill myxosporean of the roach (Rutilus rutilus)

Orsolya Z. Rácz, C. Székely, K. Molnár

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The infection with Myxobolus intimus Zaika, 1965 in the gills of the roach Rutilus rutilus (L.) from Lake Balaton was recorded in 28 out of the 39 fish examined. Developing and mature plasmodia were detected on the gills exclusively in the spring. The Myxobolus intimus infection was found only in 2- to 3-year-old fish. In histological sections, young plasmodia were found in capillaries of the secondary lamellae. More mature, round plasmodia 0.4-0.6 mm in diameter, deformed the respiratory lamellae. The intraoligochaete development of M. intimus was studied in experimentally infected oligochaetes. In two experiments, uninfected Tubifex tubifex Müller and Limnodrilus hoffmeisteri (Claparède) were exposed to mature myxospores of M. intimus. In both experiments, typical triactinospores developed in T. tubifex specimens but no infection was found in L hoffmeisteri. In semithin sections, developmental stages, pansporocysts and actinospores, were found within the proliferated gut epithelium of T. tubifex. Triactinospores were first released from oligochaetes 37 and 58 days after initial exposure in the two experiments, respectively. Each triactinospore had three pyriform polar capsules and a cylindrical sporoplasm with 32 secondary cells. The spore body joined the 3 caudal projections with a moderately long style.

Original languageEnglish
Pages (from-to)199-207
Number of pages9
JournalFolia Parasitologica
Volume51
Issue number2-3
Publication statusPublished - Jun 2004

Fingerprint

Myxobolus
Myxozoa
Tubifex tubifex
Cyprinidae
Rutilus rutilus
Plasmodium
gills
Oligochaeta
Fishes
Infection
Limnodrilus hoffmeisteri
infection
Lakes
Spores
fish
Capsules
epithelium
Epithelium
digestive system
spores

Keywords

  • Gill parasite
  • Intraoligochaete development
  • Myxobolus intimus
  • Myxospore
  • Rutilus rutilus
  • Triactinospore
  • Tubifex tubifex

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Parasitology

Cite this

Intraoligochaete development of Myxobolus intimus (Myxosporea : Myxobolidae), a gill myxosporean of the roach (Rutilus rutilus). / Rácz, Orsolya Z.; Székely, C.; Molnár, K.

In: Folia Parasitologica, Vol. 51, No. 2-3, 06.2004, p. 199-207.

Research output: Contribution to journalArticle

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