On the morphology and phylogeny of Robustodorus Andrássy, 2007 and two ‘Aphelenchoides’ species (Nematoda: Aphelenchoidinae)
Date
2018Author
Kanzaki, Natsumi
Shokoohi, Ebrahim
Fourie, Hendrika
Muller, Loureine
Swart, Antoinette
Metadata
Show full item recordAbstract
In a survey of nematode damage in groundnut (
Arachis hypogaea
) (Fabaceae) production areas in the Vaalharts Irrigation
Scheme in the Northern Cape Province of South Africa, a nematode was recovered and initially believed to be a member of the
genus
Robustodorus
,
i.e.
, the species has a characteristic robust stylet with very well-developed teardrop-shaped (garlic bulb-like) basal
swellings. The specimens were recovered in large numbers from damaged hulls and kernels of field-collected groundnuts and, after
thorough morphological and molecular studies, were subsequently identified as
Aphelenchoides arachidis
. Molecular analysis based on
near-full-length small subunit (SSU), internal transcribed spacer (ITS) and D2-D3 expansion segments of the large subunit (LSU) rRNA
genes supported the monophyly of
A. arachidis
,
A. subtenuis
and
R. megadorus
within the subfamily Aphelenchoidinae. Based on the
typological characters observed in the present study compared with descriptions in the literature, these three species are considered
as congeneric,
i.e.
, they share very well-developed basal swellings of the stylet. Accordingly, these two
Aphelenchoides
species are
transferred to
Robustodorus
as
R. arachidis
n. comb. and
R. subtenuis
n. comb. In addition, the male tail characters of
Robustodorus
and
Aphelenchoides
are discussed
URI
http://hdl.handle.net/10394/30742https://doi.org/10.1163/15685411-00003164
http://booksandjournals.brillonline.com/content/journals/10.1163/15685411-00003164