Mitochondrial phylogeny of the genus Echinococcus (Cestoda: Taeniidae) with emphasis on relationships among Echinococcus canadensis genotypes
SUMMARY The mitochondrial genomes of the genus Echinococcus have already been sequenced for most species and genotypes to reconstruct their phylogeny. However, two important taxa, E. felidis and E. canadensis G10 genotype (Fennoscandian cervid strain), were lacking in the published phylogeny. In thi...
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Cambridge University Press (CUP)
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crcambridgeupr:10.1017/s0031182013000565 2024-09-09T19:40:06+00:00 Mitochondrial phylogeny of the genus Echinococcus (Cestoda: Taeniidae) with emphasis on relationships among Echinococcus canadensis genotypes NAKAO, MINORU YANAGIDA, TETSUYA KONYAEV, SERGEY LAVIKAINEN, ANTTI ODNOKURTSEV, VALERIY A. ZAIKOV, VLADIMIR A. ITO, AKIRA 2013 http://dx.doi.org/10.1017/s0031182013000565 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182013000565 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Parasitology volume 140, issue 13, page 1625-1636 ISSN 0031-1820 1469-8161 journal-article 2013 crcambridgeupr https://doi.org/10.1017/s0031182013000565 2024-08-14T04:03:41Z SUMMARY The mitochondrial genomes of the genus Echinococcus have already been sequenced for most species and genotypes to reconstruct their phylogeny. However, two important taxa, E. felidis and E. canadensis G10 genotype (Fennoscandian cervid strain), were lacking in the published phylogeny. In this study, the phylogeny based on mitochondrial genome sequences was completed with these taxa. The present phylogeny highly supports the previous one, with an additional topology showing sister relationships between E. felidis and E. granulosus sensu stricto and between E. canadensis G10 and E. canadensis G6/G7 (closely related genotypes referred to as camel and pig strains, respectively). The latter relationship has a crucial implication for the species status of E. canadensis . The cervid strain is composed of two genotypes (G8 and G10), but the present phylogeny clearly suggests that they are paraphyletic. The paraphyly was also demonstrated by analysing the complete nucleotide sequences of mitochondrial cytochrome c oxidase subunit 1 ( cox1 ) of E. canadensis genotypes from various localities. A haplotype network analysis using the short cox1 sequences from worldwide isolates clearly showed a close relatedness of G10 to G6/G7. Domestic and sylvatic life cycles based on the host specificity of E. canadensis strains have been important for epidemiological considerations. However, the taxonomic treatment of the strains as separate species or subspecies is invalid from a molecular cladistic viewpoint. Article in Journal/Newspaper Fennoscandian Cambridge University Press Parasitology 140 13 1625 1636 |
institution |
Open Polar |
collection |
Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
SUMMARY The mitochondrial genomes of the genus Echinococcus have already been sequenced for most species and genotypes to reconstruct their phylogeny. However, two important taxa, E. felidis and E. canadensis G10 genotype (Fennoscandian cervid strain), were lacking in the published phylogeny. In this study, the phylogeny based on mitochondrial genome sequences was completed with these taxa. The present phylogeny highly supports the previous one, with an additional topology showing sister relationships between E. felidis and E. granulosus sensu stricto and between E. canadensis G10 and E. canadensis G6/G7 (closely related genotypes referred to as camel and pig strains, respectively). The latter relationship has a crucial implication for the species status of E. canadensis . The cervid strain is composed of two genotypes (G8 and G10), but the present phylogeny clearly suggests that they are paraphyletic. The paraphyly was also demonstrated by analysing the complete nucleotide sequences of mitochondrial cytochrome c oxidase subunit 1 ( cox1 ) of E. canadensis genotypes from various localities. A haplotype network analysis using the short cox1 sequences from worldwide isolates clearly showed a close relatedness of G10 to G6/G7. Domestic and sylvatic life cycles based on the host specificity of E. canadensis strains have been important for epidemiological considerations. However, the taxonomic treatment of the strains as separate species or subspecies is invalid from a molecular cladistic viewpoint. |
format |
Article in Journal/Newspaper |
author |
NAKAO, MINORU YANAGIDA, TETSUYA KONYAEV, SERGEY LAVIKAINEN, ANTTI ODNOKURTSEV, VALERIY A. ZAIKOV, VLADIMIR A. ITO, AKIRA |
spellingShingle |
NAKAO, MINORU YANAGIDA, TETSUYA KONYAEV, SERGEY LAVIKAINEN, ANTTI ODNOKURTSEV, VALERIY A. ZAIKOV, VLADIMIR A. ITO, AKIRA Mitochondrial phylogeny of the genus Echinococcus (Cestoda: Taeniidae) with emphasis on relationships among Echinococcus canadensis genotypes |
author_facet |
NAKAO, MINORU YANAGIDA, TETSUYA KONYAEV, SERGEY LAVIKAINEN, ANTTI ODNOKURTSEV, VALERIY A. ZAIKOV, VLADIMIR A. ITO, AKIRA |
author_sort |
NAKAO, MINORU |
title |
Mitochondrial phylogeny of the genus Echinococcus (Cestoda: Taeniidae) with emphasis on relationships among Echinococcus canadensis genotypes |
title_short |
Mitochondrial phylogeny of the genus Echinococcus (Cestoda: Taeniidae) with emphasis on relationships among Echinococcus canadensis genotypes |
title_full |
Mitochondrial phylogeny of the genus Echinococcus (Cestoda: Taeniidae) with emphasis on relationships among Echinococcus canadensis genotypes |
title_fullStr |
Mitochondrial phylogeny of the genus Echinococcus (Cestoda: Taeniidae) with emphasis on relationships among Echinococcus canadensis genotypes |
title_full_unstemmed |
Mitochondrial phylogeny of the genus Echinococcus (Cestoda: Taeniidae) with emphasis on relationships among Echinococcus canadensis genotypes |
title_sort |
mitochondrial phylogeny of the genus echinococcus (cestoda: taeniidae) with emphasis on relationships among echinococcus canadensis genotypes |
publisher |
Cambridge University Press (CUP) |
publishDate |
2013 |
url |
http://dx.doi.org/10.1017/s0031182013000565 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182013000565 |
genre |
Fennoscandian |
genre_facet |
Fennoscandian |
op_source |
Parasitology volume 140, issue 13, page 1625-1636 ISSN 0031-1820 1469-8161 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0031182013000565 |
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Parasitology |
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140 |
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13 |
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1625 |
op_container_end_page |
1636 |
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1809909381405343744 |