Afrina hyparrheniae

 

Contents

 

Rev 07/25/2022

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

 

Classification:

      Tylenchida
       Tylenchina
        Tylenchoidea
        Anguinidae

          Afrina hyparrheniae (Corbett, 1966) Brzeski, 1981

  
  Synonyms:
     
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Morphology and Anatomy:

 

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

 

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Distribution:

Reported from Malawi in inflorescences of Hyparrhenia collina and other Hyparrhenia spp.

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Economic Importance:

Seed gall nematodes are quarantine pests in many countries.

 

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Feeding:

Ectoparasitic on young leaves and endoparasites in developing seed galls.

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Hosts:

Seed galls with female nematodes occurred in 6 species of Hyparrhenia.

For an extensive host range list for this species, click


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Life Cycle:

Some galls with adults and viable eggs did not contain males, so the function of males is uncertain.

Ecophysiological Parameters:

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

Inflorescences of Hyparrhenia become clumped together to form a "witches broom".

Early nsymptoms are crinking along at edges of young leaves, then internodes in inflorescence become shortened and number of flowers increases.

Developing seeds in inflorescences become small, brownish-green seed galls, much smaller than healthy seeds (Corbett, 1966).

  Healthy inflorescence of Hyparrhenia (left), infected (right)
Image from Corbett (1966)
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Management:

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:

Brzeski, M. W. 1981. The genera of Anguinidae (Nematoda, Tylenchida). Rev. Nematol. 4:23-34

Corbett, D.C.M. 1966. Central African nematodes III. Anguina hyparrheniae n.sp. associated with 'wioches' broom oh Hyparrhenia spp. Nematologica 12:280-286.

 

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Copyright 1999 by Howard Ferris.
Revised: July 25, 2022.