Phylogenomic and biogeographic reconstruction of the Trichinella complex

Pasi K. Korhonen, Edoardo Pozio, Giuseppe La Rosa, Bill C. H. Chang, Anson V. Koehler, Eric P. Hoberg, Peter R. Boag, Patrick Tan, Aaron R. Jex, Andreas Hofmann, Paul W. Sternberg, Neil D. Young and Robin B. Gasser ()
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Pasi K. Korhonen: Faculty of Veterinary and Agricultural Sciences, The University of Melbourne
Edoardo Pozio: Istituto Superiore di Sanità
Giuseppe La Rosa: Istituto Superiore di Sanità
Bill C. H. Chang: Faculty of Veterinary and Agricultural Sciences, The University of Melbourne
Anson V. Koehler: Faculty of Veterinary and Agricultural Sciences, The University of Melbourne
Eric P. Hoberg: United States National Parasite Collection, Agricultural Research Service
Peter R. Boag: Monash University
Patrick Tan: Genome Institute of Singapore
Aaron R. Jex: Faculty of Veterinary and Agricultural Sciences, The University of Melbourne
Andreas Hofmann: Faculty of Veterinary and Agricultural Sciences, The University of Melbourne
Paul W. Sternberg: Howard Hughes Medical Institute, California Institute of Technology
Neil D. Young: Faculty of Veterinary and Agricultural Sciences, The University of Melbourne
Robin B. Gasser: Faculty of Veterinary and Agricultural Sciences, The University of Melbourne

Nature Communications, 2016, vol. 7, issue 1, 1-8

Abstract: Abstract Trichinellosis is a globally important food-borne parasitic disease of humans caused by roundworms of the Trichinella complex. Extensive biological diversity is reflected in substantial ecological and genetic variability within and among Trichinella taxa, and major controversy surrounds the systematics of this complex. Here we report the sequencing and assembly of 16 draft genomes representing all 12 recognized Trichinella species and genotypes, define protein-coding gene sets and assess genetic differences among these taxa. Using thousands of shared single-copy orthologous gene sequences, we fully reconstruct, for the first time, a phylogeny and biogeography for the Trichinella complex, and show that encapsulated and non-encapsulated Trichinella taxa diverged from their most recent common ancestor ∼21 million years ago (mya), with taxon diversifications commencing ∼10−7 mya.

Date: 2016
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DOI: 10.1038/ncomms10513

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