Meloidogyne izalcoensis




Rev 10/24/2023

El Salvador Coffee Root-knot Nematode Classification Hosts
Morphology and Anatomy Life Cycle
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           Meloidogyne izalcoensis Carneiro, Almeida, Gomes & Hernandez, 2005

a coffee root-knot nematode

Review general characteristics of the genus Meloidogyne.

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Morphology and Anatomy:



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

Second-stage juvenile

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Described from El Salvador. Also reported in Brazil, Asia and Africa.

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Economic Importance:

Reported on coffee in El Salvador (Carneiro et al., 2005). One of at least 17 species of Meloidogyne reported on coffee.


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Sedentary endoparasite.

Feeding site establishment and development typical of genus.

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Type Host: coffee (Coffea arabica).

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Life Cycle:

Ecophysiological Parameters:

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

Chromosome number 2n=44-48. The large number, and variability of chromosome number, are typical of species reproducing by obligate mitotic parthenogenesis. (Carneira et al., 2005; Subbotin et al., 2021; Triantaphyllou, 1985).

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Meloidogyne izalcoensis induces round galls in coffee roots with egg masses outside the galls, in cotrast to M. exigua which induces round galls with egg masses within the galls (Humphreys-Pereira et al., 2014).


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

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


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Carneiro, R. M.; Almeida, M. R. A.; Gomes, A. C. M.; Hernandez, A 2005. Meloidogyne izalcoensis n. sp. (Nematoda: Meloidogynidae), a root-knot nematode parasitising coffee in El Salvador. Nematology 7:819-832.

Humphreys-Pereira, D.A., Flores-Chavez, L., Gomez, M., Salazar, L. Gomez-Alpizar, L.E., Elling, A.A. 2014. Meloidogyne lopezi n.sp. (Nematode: Meloidogynidae, a new root-knot nematode. Nematology 16:643-661.

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.

Triantaphyllou, A.C. 1985. Gametogenesis and the chromosomes  of Meloidogune nataliei: not typical of other root-knot nematodes. J. Nematology 17:1-5.

Triantaphyllou, A.C. 1985. Cytogenetics, cytotaxonomy and phylogeny of root-knot nematodes. In Sasser, J.N. & Carter, C.C. (eds) An Advanced Treatiswe on Meloidogyne.Vol 1. Biology and Control.N.C. State Universty Graphics, Raleigh, N.C. USA.


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Copyright © 1999 by Howard Ferris.
Revised: October 24, 2023.