Rev 07/02/2024
Tylenchida Tylenchina Tylenchoidea Meloidogynidae Meloidogyninae
Meloidogyne daklakensis Trin, Le, Nguyen, Nguyen, Liebanas, Nguyen, 2019
Review general characteristics of the genus Meloidogyne.
Female:
Male:
Body vermiform, anterior end tapering and posterior region bluntly rounded.
Lip region slightly offset from body, with a high lip region cap consisting of a large labial annulus. Medial lips and labial disc are bow-tie shaped. Lateral lips large and triangular, slightly lower than labial disc and medial lips.
Amphidial openings appear as long, wide slits located between labial disc and lateral lips.
Post-labial annulus divided into four lobes by longitudinal slits.
Stylet robust and straight, one lateral knob projected, two others sloping posteriorly.
Distance from base of stylet to DEGO 5±1 um.
Procorpus distinctly outlined, three times longer than metacorpus. Metacorpus ovoid, with a strong valve apparatus.
Excretory duct curved.
Lateral field with four incisures forming three bands, areolation along whole body.
One testis, occupying 58% of the body cavity.
Spicules slightly curved ventrally, with bluntly rounded terminus. Gubernaculum short and crescent-shaped
(Ref: Trin et al., 2019)
Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:
Described from Robusta coffee in the Western Highlands of Vietnam
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Coffee roots display symptoms that are atypical of those caused by other root-knot nematodes. There is a large number of egg masses protruding outside the roots, and numerous small, white galls on adventitious roots (Trin et al., 2019).
Sedentary endoparasite.
Feeding site establishment and development typical of genus.
Type host: Coffea canephora.(Robusta coffee)
Ecophysiological Parameters:
Sedentary endoparasites.
Female body ruptures root cortex and may protrude with the egg mass on the root surface.
Host Plant Resistance, Non-hosts and Crop Rotation alternatives:
Subbotin, S.A., Palomares-Rius, J.E., Castillo, P. 2021. Systematics of Root-knot Nematodes (Nematoda: Meloidogynidae). Nemaology Monographs and Perspectives Vol 14. Brill, Leiden. 857p.
Trin, Q.P., Le, T.M.L., Nguyen, T.D., Nguyen, H.T., Liebanas, G., Nguyen, T.A.D. 2019. Meloidogyne daklakensis n. sp. (Nematoda: Meloidogynidae), a new root-knot nematode associated with Robusta coffee (Coffea canephora Pierre ex A. Froehner) in the Western Highlands, Vietnam. J. Helminthology 93:242-254