Meloidogyne javanica

 

Contents

 

Rev 12/11/2019

  Classification Hosts
Morphology and Anatomy Life Cycle
Return to Meloidogyne Menu Economic Importance Damage
Distribution Management
Return to Heteroderidae Menu Feeding  References
    Go to Nemaplex Main Menu   Go to Dictionary of Terminology

 


Classification:

      Tylenchida
       Tylenchina
        Tylenchoidea
         Heteroderidae
          Meloidogyninae

           Meloidogyne javanica (Treub) Chitwood, 1949
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Morphology and Anatomy:

Sample perineal patterns of Meloidogyne javanica.  The double lateral lines are characteristic. 

Body shapes of immature and mature females.

Males of Meloidogyne javanica are vermiform and 1 mm to 1.5 mm long.

The body rotates through a characteristic half twist along its length.

There is no bursa.

Males probably do not feed and usually have no reproductive function.  They may develop in larger numbers under stressful conditions.

 
Meloidogyne javanica Perineal Patterns:
From International Meloidogyne Project 
   

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

 
 
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Distribution:

Warm regions of the world.

Predominant root-knot species in central Africa.

Species is often dominant at higher altitudes in warm climates..

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Economic Importance:

C-rated pests in California. 

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Feeding:

Feeding site establishment and development typical of genus.

Sedentary endoparasite of plant roots.

 

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Hosts:

Over 770 species of host plants.

For an extensive host range list for this species, click

 

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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

 

Minimum, optimum, and maximum temperatures recorded for life processes of M. javanica

Activity or Process T (min) T (opt) T (max)
Egg Hatch 10 30 35
Motility 25
Root Invasion 20-30
Growth 25-30
Reproduction 24-28
Survival <10

   

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Damage:

This species is the most serious pest of crops in central Africa (Daulton  & Curtis, 1964).

Interactions between M. javanica and other pathogens can occur.

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Management:

Soil fumigants in higher value crops.

Crop rotation can be effective, but may be difficult to find non-hosts of economic value.

Length of rotation of Ermelo Weeping Lovegrass (Eragrostis curvula) between tobacco crops in Meloidogyne javanica infested soil.  One year rotation on left (not fumigated/fumigated). three year rotation on right (fumigated/not fumigated).  After three years of non-host rotation there was no further benefit from soil fumigation. (Zimbabwe, 1964).

Hot water dips of planting material (for example, potatoes at 46 C for 2 hours).  

There is less plant resistance to attack by this species than for M. incognita.

In tobacco fields in North Carolina, the predominant Meloidogyne species was M. incognita until introduction of cultivars with resistance to that species.  Subsequently there has been a shift to M. javanica and M. arenaria, which now predominate in tobacco fields (and for which resistance is not available).

The Mi gene of tomato confers resistance to several species of root-knot nematode, including M. javanica, M. incognita and M. arenaria.

Cultivars of carrot derived from Brasilia carry single gene resistance to M. javanica.  The gene does not confer resistance to M. incognita; that had to be provided from other sources.

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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References:

Daulton and Curtis 1964

H. Ferris

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Copyright © 1999 by Howard Ferris.
Revised: December 11, 2019.