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- Title
The taxonomic status of Aphelenchoides besseyi Christie, 1942 (Nematoda: Aphelenchoididae) populations from the southeastern USA, and description of Aphelenchoides pseudobesseyi sp. n.
- Authors
Subbotin, Sergei A.; Oliveira, Clemen J.; Álvarez-Ortega, Sergio; Desaeger, Johan A.; Crow, William; Overstreet, Charles; Leahy, Robert; Vau, Silvia; Inserra, Renato N.
- Abstract
Summary: Populations reviously identified as Aphelenchoides besseyi were studied. Using an integrated approach, the A. besseyi species complex contains several cryptic species: A. besseyi sensu stricto , A. oryzae , A. pseudobesseyi sp. n. and other putative undescribed species. A population from Florida strawberry morphologically fits the A. besseyi of both Christie and Allen and is considered the only representative of this species. A Louisiana rice population fitted the descriptions of A. oryzae of both Yokoo and Fortuner; PUS length was consistently less than one-third of VA. Aphelenchoides oryzae , parasitising rice and other monocots, was re-established based on morphological and molecular datasets. Three populations from Florida ornamental plants (Dryopteris erythrosora , Echinacea sp. and Farfugium japonicum) differed from those of the two above-mentioned species and are described as A. pseudobesseyi sp. n. Populations previously identified as ' A. besseyi ' from several countries were considered representatives of this new species, which usually had a large and conspicuous PUS, 8-14 μ m wide and with a length greater than one-third of VA in 40-70% of studied specimens. Morphological variability made separation of A. pseudobesseyi sp. n. from A. oryzae and A. besseyi unreliable without the examination of numerous specimens and molecular analysis.
- Subjects
FLORIDA; LOUISIANA; NEMATODES; ORNAMENTAL plants; RICE
- Publication
Nematology, 2021, Vol 23, Issue 4, p381
- ISSN
1388-5545
- Publication type
Article
- DOI
10.1163/15685411-bja10048