Haycocknema

 

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Rev: 12/27/2023

  Classification Biology and Ecology
Morphology and Anatomy Life Cycle
Return to Haycocknema Menu Ecosystem Functions and Services
Distribution Management
Return to Robertdollfusidae Menu Feeding  References
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Classification:

Enoplea

Dorylaimia

Muspiceida

Muspiceina

Muspiceoidea

                         Robertdollfusidae

Haycocknema Spratt, Beveridge, Andrews & Dennett, 1999

   Type species of the genus: Haycocknema perplexum Spratt, Beveridge, Andrews & Dennett, 1999
Genus named for Peter Haycock who performed dissection and microscopical services during description of the type species.
    Synonyms:
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Morphology and Anatomy:

Haycocknema differs from all other genera of the Muspiceoidea in having:

General characteristics:

 

 

Females:

  • large amorphous “cell” supporting a granule-filled gourd-shaped reservoir in the rectal region of mature and gravid females nematodes
  • Immature females with lateral bacillary bands comprised of a single row of pore cells spaced irregularly and extending posteriorly to the region of the vulva
  • Didelphic, amphidelphic, vulva at mid-body, with  small number of ova, eggs and larvae developing in each uterus

  
    Ref: Spratt et al., 1999

Males:  

  • Spicule minute, weakly sclerotized, almost tubular.


Body size range for the species of this genus in the database - Click:
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Distribution:

Described from Tasmania from a man in which muscle fibers of the vastus lateralis (one of the quadriceps muscles on the outside of the thigh) were irritated and inflamed (polymyositis).

Homo sapiens listed as type host of type species, H. perplexum (Spratt et al., 1999)

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Feeding:

Adults and juveniles are parasites of the skeletal muscle fibers of humans.

 

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Biology and Ecology:

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Life Cycle:

Amphimictic reproduction (Spratt et al., 1999).

For Ecophysiological Parameters for this genus, click 
 
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Ecosystem Functions and Services:

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Management:

 
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References:

Spratt, D.M 2013. Muspiceida. In Andreas Schmidt-Rhaesa (Ed) Nematoda

Spratt, D.M., Beveridge, I., Andrews, J.R.H., and Dennett, X. 1999. Haycocknema perplexum n.g. n.sp. (Nematoda: Robertdollfusidae) an intramyofibre parasite in man. Systematic Parasitology 43:123-131.

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Copyright © 1999 by Howard Ferris.
Revised: December 27, 2023.