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Integrative taxonomy unravels cryptic diversity in the Paratrichodorus hispanus-group complex and resolves two new species of the genus and the molecular phylogeny of the family (Nematoda: Trichodoridae)

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Abstract
The genus Paratrichodorus currently comprises 26 species of polyphagous ectoparasitic plant nematodes that are distributed worldwide and include a few tobravirus vector species. Paratrichodorus is one of the most difficult genera for species identification because it is phenotypically conserved, with morphometric characters that often overlap between species. From 2003 to 2016, nematode surveys were conducted in southern Spain, and the present study addresses 22 nematode populations of the Paratrichodorus hispanus group. Among them, two new species, Paratrichodorus almadenensis sp. nov. and Paratrichodorus ramblensis sp. nov., are described here morphologically and molecularly and compared with topotype specimens of Paratrichodorus hispanus. Furthermore, this analysis was complemented with the first molecular data for this species complex and for the genus Monotrichodorus. The phylogeny of family Trichodoridae showed the relationship of Monotrichodorus with Trichodorus, both of which are phylogenetically associated with the P. hispanus species group, including the two newly described species. Several phylogenetic hypotheses about the monophyly of the genera with molecular data composing the family Trichodoridae were tested using ShimodairaHasegawa and approximately unbiased tests. This work also includes the first observations of copulatory plugs in Paratrichodorus, which clearly differ from the different types of mating plugs described in Trichodorus species.
Keywords
approximately unbiased and ShimodairaHasegawa tests, Bayesian inference, cryptic species, cytochrome oxidase c subunit 1, expansion domains of the large ribosomal subunit (28S), internal transcriber spacer, rRNA, stubby root nematodes, RIBOSOMAL DNA, STUBBY-ROOT, DIPHTHEROPHORINA, IDENTIFICATION, DIAGNOSTICS, SYSTEMATICS, LENGTH, TREE, RNA

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Citation

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MLA
Decraemer, Wilfrida, et al. “Integrative Taxonomy Unravels Cryptic Diversity in the Paratrichodorus Hispanus-Group Complex and Resolves Two New Species of the Genus and the Molecular Phylogeny of the Family (Nematoda: Trichodoridae).” ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY, vol. 185, no. 3, 2019, pp. 656–92, doi:10.1093/zoolinnean/zly059.
APA
Decraemer, W., Cantala-Navarrete, C., Archidona-Yuste, A., Varela-Benavides, I., Gutiérrez-Gutiérrez, C., Pablo Castillo, P., & Palomares-Rius, J. E. (2019). Integrative taxonomy unravels cryptic diversity in the Paratrichodorus hispanus-group complex and resolves two new species of the genus and the molecular phylogeny of the family (Nematoda: Trichodoridae). ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY, 185(3), 656–692. https://doi.org/10.1093/zoolinnean/zly059
Chicago author-date
Decraemer, Wilfrida, Carolina Cantala-Navarrete, Antonio Archidona-Yuste, Ingrid Varela-Benavides, Carlos Gutiérrez-Gutiérrez, Pablo Pablo Castillo, and Juan E Palomares-Rius. 2019. “Integrative Taxonomy Unravels Cryptic Diversity in the Paratrichodorus Hispanus-Group Complex and Resolves Two New Species of the Genus and the Molecular Phylogeny of the Family (Nematoda: Trichodoridae).” ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY 185 (3): 656–92. https://doi.org/10.1093/zoolinnean/zly059.
Chicago author-date (all authors)
Decraemer, Wilfrida, Carolina Cantala-Navarrete, Antonio Archidona-Yuste, Ingrid Varela-Benavides, Carlos Gutiérrez-Gutiérrez, Pablo Pablo Castillo, and Juan E Palomares-Rius. 2019. “Integrative Taxonomy Unravels Cryptic Diversity in the Paratrichodorus Hispanus-Group Complex and Resolves Two New Species of the Genus and the Molecular Phylogeny of the Family (Nematoda: Trichodoridae).” ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY 185 (3): 656–692. doi:10.1093/zoolinnean/zly059.
Vancouver
1.
Decraemer W, Cantala-Navarrete C, Archidona-Yuste A, Varela-Benavides I, Gutiérrez-Gutiérrez C, Pablo Castillo P, et al. Integrative taxonomy unravels cryptic diversity in the Paratrichodorus hispanus-group complex and resolves two new species of the genus and the molecular phylogeny of the family (Nematoda: Trichodoridae). ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY. 2019;185(3):656–92.
IEEE
[1]
W. Decraemer et al., “Integrative taxonomy unravels cryptic diversity in the Paratrichodorus hispanus-group complex and resolves two new species of the genus and the molecular phylogeny of the family (Nematoda: Trichodoridae),” ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY, vol. 185, no. 3, pp. 656–692, 2019.
@article{8590826,
  abstract     = {{The genus Paratrichodorus currently comprises 26 species of polyphagous ectoparasitic plant nematodes that are distributed worldwide and include a few tobravirus vector species. Paratrichodorus is one of the most difficult genera for species identification because it is phenotypically conserved, with morphometric characters that often overlap between species. From 2003 to 2016, nematode surveys were conducted in southern Spain, and the present study addresses 22 nematode populations of the Paratrichodorus hispanus group. Among them, two new species, Paratrichodorus almadenensis sp. nov. and Paratrichodorus ramblensis sp. nov., are described here morphologically and molecularly and compared with topotype specimens of Paratrichodorus hispanus. Furthermore, this analysis was complemented with the first molecular data for this species complex and for the genus Monotrichodorus. The phylogeny of family Trichodoridae showed the relationship of Monotrichodorus with Trichodorus, both of which are phylogenetically associated with the P. hispanus species group, including the two newly described species. Several phylogenetic hypotheses about the monophyly of the genera with molecular data composing the family Trichodoridae were tested using ShimodairaHasegawa and approximately unbiased tests. This work also includes the first observations of copulatory plugs in Paratrichodorus, which clearly differ from the different types of mating plugs described in Trichodorus species.}},
  author       = {{Decraemer, Wilfrida and Cantala-Navarrete, Carolina and Archidona-Yuste, Antonio and Varela-Benavides, Ingrid and Gutiérrez-Gutiérrez, Carlos and Pablo Castillo, Pablo and Palomares-Rius, Juan E}},
  issn         = {{0024-4082}},
  journal      = {{ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY}},
  keywords     = {{approximately unbiased and ShimodairaHasegawa tests,Bayesian inference,cryptic species,cytochrome oxidase c subunit 1,expansion domains of the large ribosomal subunit (28S),internal transcriber spacer,rRNA,stubby root nematodes,RIBOSOMAL DNA,STUBBY-ROOT,DIPHTHEROPHORINA,IDENTIFICATION,DIAGNOSTICS,SYSTEMATICS,LENGTH,TREE,RNA}},
  language     = {{eng}},
  number       = {{3}},
  pages        = {{656--692}},
  title        = {{Integrative taxonomy unravels cryptic diversity in the Paratrichodorus hispanus-group complex and resolves two new species of the genus and the molecular phylogeny of the family (Nematoda: Trichodoridae)}},
  url          = {{http://doi.org/10.1093/zoolinnean/zly059}},
  volume       = {{185}},
  year         = {{2019}},
}

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