Complete life cycle of myxobolus rotundus (Myxosporea

Myxobolidae), a gill myxozoan of common bream abramis brama

C. Székely, S. L. Hallett, S. D. Atkinson, K. Molnár

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The life cycle of Myxobolus rotundus Nemeczek, 1911, a myxosporean parasite of the gills of common bream Abramis brama L., was studied under laboratory conditions. Mature Myxobolus spp. spores from plasmodia in the gills of wild bream were used to infect naïve oligochaete worms in a flow-through system of aquaria. Triactinomyxon-type actinospores were released from the oligochaetes 1 yr later and allowed to continually flow into a tank containing uninfected bream fry. The gills of the fry were checked for development of plasmodia in squash preparations 3 d postexposure, and then at weekly intervals for 8 wk. Tissue samples were fixed at each time point. Developing plasmodia were first observed 17 d post-exposure (Day 17). Mature spores were collected from plasmodia on Day 56 and were added to plastic dishes containing parasite-free Tubifex tubifex oligochaetes. Second-generation actinospores were released from these worms 8 mo post-exposure, and were morphologically identical to first-generation spores. Myxospores obtained from the bream fry were morphologically identical to those identified in wild bream as M. rotundus. Small subunit ribosomal RNA gene sequences obtained from first- and second-generation actinospores and the bream fry myxospores were 100% similar to M. rotundus spores from the original wild fish.

Original languageEnglish
Pages (from-to)147-155
Number of pages9
JournalDiseases of Aquatic Organisms
Volume85
Issue number2
DOIs
Publication statusPublished - 2009

Fingerprint

Myxobolus
Abramis brama
bream
spore
life cycle (organisms)
gills
life cycle
Plasmodium
fish fry
Oligochaeta
spores
parasite
aquarium
Tubifex tubifex
RNA
parasites
plastic
squashes
wild fish
aquariums

Keywords

  • 18S rDNA
  • Abramis brama
  • Gill parasite
  • Lake Balaton
  • Myxobolus rotundus
  • Myxospore
  • Triactinomyxon
  • Tubifex tubifex

ASJC Scopus subject areas

  • Aquatic Science
  • Ecology, Evolution, Behavior and Systematics

Cite this

Complete life cycle of myxobolus rotundus (Myxosporea : Myxobolidae), a gill myxozoan of common bream abramis brama. / Székely, C.; Hallett, S. L.; Atkinson, S. D.; Molnár, K.

In: Diseases of Aquatic Organisms, Vol. 85, No. 2, 2009, p. 147-155.

Research output: Contribution to journalArticle

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