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Global Phylogeography and Genetic Diversity of the Zoonotic Tapeworm Echinococcus Granulosus Sensu Stricto Genotype G1 Publisher Pubmed



Kinkar L1 ; Laurimae T1 ; Acostajamett G2 ; Andresiuk V3 ; Balkaya I4 ; Casulli A5 ; Gasser RB6 ; Van Der Giessen J7 ; Gonzalez LM8 ; Haag KL9 ; Zait H10 ; Irshadullah M11 ; Jabbar A6 ; Jenkins DJ12 Show All Authors
Authors
  1. Kinkar L1
  2. Laurimae T1
  3. Acostajamett G2
  4. Andresiuk V3
  5. Balkaya I4
  6. Casulli A5
  7. Gasser RB6
  8. Van Der Giessen J7
  9. Gonzalez LM8
  10. Haag KL9
  11. Zait H10
  12. Irshadullah M11
  13. Jabbar A6
  14. Jenkins DJ12
  15. Kia EB13
  16. Manfredi MT14
  17. Mirhendi H15
  18. Mrad S16
  19. Rostaminejad M17
  20. Oudnimrad M16
  21. Pierangeli NB18
  22. Poncegordo F19
  23. Rehbein S20
  24. Sharbatkhori M21
  25. Simsek S22
  26. Soriano SV18
  27. Sprong H7
  28. Snabel V23
  29. Umhang G24
  30. Varcasia A25
  31. Saarma U1

Source: International Journal for Parasitology Published:2018


Abstract

Echinococcus granulosus sensu stricto (s.s.) is the major cause of human cystic echinococcosis worldwide and is listed among the most severe parasitic diseases of humans. To date, numerous studies have investigated the genetic diversity and population structure of E. granulosus s.s. in various geographic regions. However, there has been no global study. Recently, using mitochondrial DNA, it was shown that E. granulosus s.s. G1 and G3 are distinct genotypes, but a larger dataset is required to confirm the distinction of these genotypes. The objectives of this study were to: (i) investigate the distinction of genotypes G1 and G3 using a large global dataset; and (ii) analyse the genetic diversity and phylogeography of genotype G1 on a global scale using near-complete mitogenome sequences. For this study, 222 globally distributed E. granulosus s.s. samples were used, of which 212 belonged to genotype G1 and 10 to G3. Using a total sequence length of 11,682 bp, we inferred phylogenetic networks for three datasets: E. granulosus s.s. (n = 222), G1 (n = 212) and human G1 samples (n = 41). In addition, the Bayesian phylogenetic and phylogeographic analyses were performed. The latter yielded several strongly supported diffusion routes of genotype G1 originating from Turkey, Tunisia and Argentina. We conclude that: (i) using a considerably larger dataset than employed previously, E. granulosus s.s. G1 and G3 are indeed distinct mitochondrial genotypes; (ii) the genetic diversity of E. granulosus s.s. G1 is high globally, with lower values in South America; and (iii) the complex phylogeographic patterns emerging from the phylogenetic and geographic analyses suggest that the current distribution of genotype G1 has been shaped by intensive animal trade. © 2018 Australian Society for Parasitology
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