Genetic diversity of the crustacean parasite Hematodinium (Alveolata, Syndinea)

Kristina M. Hamilton*, D. Morritt, Paul W. Shaw

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (SciVal)

Abstract

In the absence of distinct morphological characteristics, knowledge of genetic relationships within and between protist parasite species is important for determining reservoir hosts and understanding the biology of the causative agents of emerging diseases. The genus Hematodinium is a member of Syndinea, an ubiquitous alveolate group found in all oceanic environments. Hematodinium parasites cause epizootics in crustaceans, yet their life cycle, genotypic variety and their phylogeny is poorly understood. By combining phylogenetic methods with analyses of secondary structures of variable ribosomal RNA genes we show that Hematodinium from the east and west North-Atlantic is comprised of distinct ribotypes or clades. These did not correspond to a specific area, but varied in host specificity. For example, a Hematodinium 'Langoustine' clade was only found in Nephrops norvegicus langoustines, whereas other clades were specific to crabs or seem to be generalist parasites. (C) 2009 Elsevier GmbH. All rights reserved.

Original languageEnglish
Pages (from-to)17-28
Number of pages12
JournalEuropean Journal of Protistology
Volume46
Issue number1
Early online date17 Nov 2009
DOIs
Publication statusPublished - Jan 2010

Keywords

  • Genotypic diversity
  • Host specificity
  • INTERNAL TRANSCRIBED SPACER
  • DINOFLAGELLATE
  • SEQUENCES
  • ITS2
  • RNA SECONDARY STRUCTURE
  • SPECIES COMPLEX
  • rRNA
  • TOOL
  • Syndinea
  • DNA
  • Hematodinium
  • RIBOSOMAL-RNA
  • EVOLUTION

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