Meloidogyne karsseni

Meloidogyne karsseni	Contents	Rev 12/16/2024
	Classification	Hosts
	Morphology and Anatomy	Life Cycle
Return to Meloidogyne Menu	Economic Importance	Damage
	Distribution	Management
Return to Meloidogynidae Menu	Feeding	References
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Classification:

      Chromadorea
       Rhabditida
       Tylenchina
        Tylenchoidea
          Meloidogynidae
           Meloidogyninae

Meloidogyne karsseni Singh, Gitonga, Hajihassani, Verhaage, van Aaalst-Philipse, Couvreur & Bert, 2023.

Review general characteristics of the genus Meloidogyne.

Morphology and Anatomy:

Key diagnostic characteristtics:

1. Second-stage juveniles:

body length (345 to 422 um)
Head region conical rounded head with a post-labial annule lacking transverse striation
Thin stylet 11 to 12 Âµm long with rounded to oval and backwardly sloping knobs
Dorsal gland orifice (DGO) at 5.2 to 6.0 um behind the knobs,
Hemizonid just above the secretory-excretory (SE) pore
Tapering tail with finely rounded terminus and one or two very weak constrictions at hyaline tail tip

2. Female:

Oval-to-rounded perineal pattern with coarse striation on lateral sides around the anus, low dorsal arch with finer striations, and distinctly visible lateral lines;

3. Male:

Rounded and continuous head with a post-labial annule lacking transverse striations
Robust stylet 20 to 24 um long, rounded-to-oval and slightly backwardly sloping knobs,
DGO at 2.4 to 2.9 um from the knobs

Species named in honor of Prof. Dr. Gerrit Karssen for his valuable contributions as a nematode taxonomist, especially in the Meloidogyne group

Ref: Singh et al., 2023

Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

Distribution:

Species described associated with sweet pepper in Guanojuato State, Mexico.

Feeding:

Sedentary endoparasite.

Feeding site establishment and development typical of genus.

Hosts:

Type host: Capsicum annuum.

For an extensive host range list for this species, click

Life Cycle:

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click	If species level data are not available, click for genus level parameters

Management:

Resistance

Host Plant Resistance, Non-hosts and Crop Rotation alternatives:

For plants reported to have some level of resistance to this species, click

Singh, P.R., Gitonga, D., Hajihassani, A., Verhaage, A., van Aaalst-Philipse, E., Couvreur, M., Bert, W. 2023. A New Root-Knot Nematode species, Meloidogyne karsseni n. sp. (Nematoda: Meloidogynidae), From Mexico and a Taxonomic Update on M. paranaensis From Guatemala. J. Nematology 55: e2023-1| DOI: 10.2478/jofnem-2023-0042

Subbotin, S.A. Palomares-Rius, J.E., Castillo, P. 2021. Systematics of Root-knot Nematodes (Nematoda: Meloidogynidae). Nematology Monographs and Perspectives Vol 14: D.J. Hunt and R.N. Perry (eds) Brill, Leiden, The Netherlands 857p.