Hypodontolaimus antarcticus

 

Contents

 

Rev: 01/04/2024

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

Chromadorea
  Chromadoria
   Chromadorida
    Hypodontolaimidae
       Hypodontolaimus antarcticus Andrassy & Gibson, 2006
    Synonyms:
      
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Morphology and Anatomy:

Hypodontolaimus antarcticus. A: Anterior; B Esophago-intestinal region. Bars = 20um

Drawings from Andrassy and Gibson, 2006

 

Females:

  • Body distinctly narrower posterior to vulva which is close to mid-body.
  • Didelphic, amphidelphic, ovaries reflexed.
  • Vulva transverse, with protruded lips; vagina narrow.
  • Oviparous
  • Tail arcuate, rather stout, slowly tapering, occupying 6.5–8.3% of body length.
  • Three large caudal glands present,  posterior ampulla large with strongly sclerotized valve.
  • Spinneret wide, but quite short.

  
    Ref: Andrassy and Gibson, 2006

Males:  


  • Monorchis, testis outstretched, occupying 11–14% of body length.
  • Spermatozoa oval, fairly large,
  •  Spicules strong, ventrally bent, tapering unevenly, 58–66 m about 1.5–2.0 times anal body diameter long, and distally forked.
  • Gubernaculum simple, almost straight,
  •  Preanal supplements well developed, strongly sclerotized, cup-shaped, and 21–28 in number
  • Tail strongly curved or twisted ventrally,  occupying 6.5–7.6% of body length
  •  Three large caudal glands
  • Spinneret short and similar to that of female.

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

 

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Distribution:

Described from a microbial mat in Ace Lake, a saline lake in the Vestfold Hills, Princess Elizabeth Land, East Antarctica.

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Feeding:

 
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Biology and Ecology:

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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

 
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Ecosystem Functions and Services:

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Management:

 
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References:

 Andrassy, I. 2005. Free-living Nematodes of Hungary, I (Nematoda errantia). Pedozoologica Hungarica 3. Hungarian Natural History Museum, Budapest, Hungary. 518p.

Andrassy, I. and Gibson, J.A.E. 2006. Nematodes from saline and freshwater lakes of the Vestfold Hills, East Antarctica, including the description of Hypodontolaimus antarcticus sp. n. Polar Biology DOI 10.1007/s00300-006-0224-4

 

Copyright  1999 by Howard Ferris.
Revised: January 04, 2024.