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Related Experiment Video

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Isolation And Dendritic Cell-Uptake of Small Extracellular Vesicles from Echinococcus granulosus
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Echinococcus canadensis, E. borealis, and E. intermedius. What's in a name?

Alan J Lymbery1, Emily J Jenkins2, Janna M Schurer2

  • 1School of Veterinary and Life Sciences, Murdoch University, Murdoch, WA, Australia.

Trends in Parasitology
|December 3, 2014
PubMed
Summary

The study redefines Echinococcus granulosus genotypes, proposing G6/7 as Echinococcus intermedius, G10 as Echinococcus canadensis, and G8 as Echinococcus borealis. This taxonomic clarification impacts public health and veterinary practices.

Keywords:
Echinococcus granulosuscamel straincervid strainevolutionary species conceptpig straintaxonomy

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Area of Science:

  • Parasitology
  • Evolutionary Biology
  • Molecular Taxonomy

Background:

  • The phylogenetic relationships among Echinococcus granulosus genotypes G6, G7, G8, and G10 are established.
  • However, the distinct taxonomic status of these genotypes remains unresolved, posing challenges for accurate identification and control.

Purpose of the Study:

  • To apply an evolutionary species concept to resolve the taxonomic status of Echinococcus granulosus genotypes G6, G7, G8, and G10.
  • To evaluate the appropriateness of resurrecting previously proposed names for these distinct evolutionary lineages.

Main Methods:

  • Phylogenetic analysis using an evolutionary species concept.
  • Comparative analysis of genetic divergence and evolutionary trajectories among genotypes.

Main Results:

  • Genotypes G6 and G7 represent a single species, distinct from G8 and G10.
  • Genotypes G8 and G10 are on separate evolutionary trajectories, indicating they are distinct species.
  • The previously proposed names Echinococcus intermedius (G6/7), Echinococcus canadensis (G10), and Echinococcus borealis (G8) are suggested for resurrection.

Conclusions:

  • Formal recognition of these distinct Echinococcus species is crucial.
  • Accurate species delimitation has significant implications for veterinary and public health strategies.
  • This taxonomic revision aids in understanding and managing echinococcosis transmission.