Paratrichodorus
| Paratrichodorus | |
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Diphtherophoroidea
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Paratrichodorus
Siddiqi, 1974[1]
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| Type species | |
| Paratrichodorus tunisiensis Siddiqi |
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Paratrichodorus is a genus of terrestrial root feeding (stubby-root) nematodes in the Trichodoridae family (trichorids), being one of five genera.[2] They are economically important plant parasites and virus vectors.[3] The females are didelphic (two genital tracts), and are distributed worldwide.[4]
Taxonomy
Historically, Trichodorus formed the only genus in the Trichodoridae family. Then Trichodorus was split into two genera in 1974 by Siddiqi,[1] Trichodorus and Paratrichodorus. The genus, which is the second largest in the family consists of 34 species.[4] Siddiqi based the separation on the position of the gland nuclei and the type of pharyngo-intestinal junction.
Subdivision
Using the same characteristics as those establishing the genus, Siddiqi described three subgenera, Paratrichodorus, Atlantadorus and Nanidorus, but Decraemer did not support the validity of this.[5] While the latter approach has not been accepted by some authorities,[5] Siddiqi elevated them to genus status in 1980,[6][7] an approach that few other authors have followed,[8] but maintained by that author,[9] and now receiving some support from modern molecular approaches to taxonomy. At least in the case of Nanidorus, phylogenetic analysis has supported its recognition as a separate genus, although clustering with Trichodorus rather than its parent Paratrichodorus.[8][10]
Plant pathology
Trichorids became of interest in 1951.[11] At that time Trichodorus christie (=Paratrichodorus minor) was recognised as a pest of crops in Florida.[12]
References
- ↑ 1.0 1.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Order Triplochida: Paratrichodorus Nemaplex: Nematode-Plant Expert Information System. University of California, Davis. Version October 9, 2012.
- ↑ Decraemer 1995.
- ↑ 4.0 4.1 Wilfrida Decraemer and R. T. Robbins. The Who, What and Where of Longidoridae and Trichodoridae. J Nematol v.39(4); 2007 Dec PMC2586508
- ↑ 5.0 5.1 Decraemer, W. 1980. Systematics of the Trichodoridae (Nematoda) with keys to their species. Revue. Nematol. 3(1): 81-99.
- ↑ SIDDIQI, M.R. (1980). On the generic status of Atlantadorus Siddiqi, 1974 and Nanidorus Siddiqi, 1974 (Nematoda: Trichodoridae). Systematic Parasitology 1, 151-152.
- ↑ Decraemer 1995, p. 10.
- ↑ 8.0 8.1 Duarte et al. 2010.
- ↑ SIDDIQI, M.R. (2002). Ecuadorus equatorius gen. n., sp. and Nanidorus mexicanus sp. n. (Nematoda: Trichodoridae). International Journal of Nematology 12, 197-202.
- ↑ Kumari & Subbotin 2012.
- ↑ CHRISTIE, J. R. & PERRY, V. G. (1951). Removing nematodes from soil. Proc. helm. Soc. Wasb. 18: 106-108.
- ↑ Decraemer 1995, p. 3.
Bibliography
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- De Ley, P & Blaxter, M 2004, 'A new system for Nematoda: combining morphological characters with molecular trees, and translating clades into ranks and taxa'. in R Cook & DJ Hunt (eds), Nematology Monographs and Perspectives. vol. 2, E.J. Brill, Leiden, pp. 633–653.
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