Microlaimus honestus

 

Contents

   Rev 09/01/2024

  Classification Biology and Ecology
Morphology and Anatomy Life Cycle

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 Ecosystem Functions and Services
Distribution Management
Return to Microlaimidae Menu Feeding  References
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Classification:

Chromadorea
  Chromadoria
   Desmodorida
Desmodorina
             Microlaimoidea
   Microlaimidae

Microlaimus honestus  De Man, 1922

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Morphology and Anatomy:

 

  • Body fusiform; cuticle annulated covered with dots; smooth at anterior end.

  • Head weakly offset from body contour.

  • Cephalic sensillae in 3 circles: 6, 6 and 4

  • Amphids unispiral, almost round., behind buccal cavity region.

  • Stoma with folded cheilstom bearing longitudinal ribs. One dorsal and 2 subventral teeth

  • Esophagus muscular in anterior, expandiong to a pyriform bulb posteriorly

 



Microlaimus honestus.
5: male head; 6. Female head (bar=10um)
7: male spicules and gubernaculum (bar=50um); 8: Male tail (bar=10um).
Adapted from Kovalyev and Tshesunov, 2005

Microlaimus honestus. 10: Entire female (bar = 100um)
Adapted from Kovalyev and Tshesunov, 2005

 

Female:

  • Reproductive system didelphic, amphidelphic.
  • Ovaries outstretched, with spermatecae.
  • Tail conical, tip curved laterally

Male:

  • Reprodictive system diorchic, testes opposed and outstretched
  • Spermatazoa large
  • Spicules and gubernaculum present
  • Four precloacal supplements
  • Tail conical, 4 caudal glands, spinneret

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

 

    
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Distribution:

Describwd from North, White, Norway, Baltic, Red, Mediterranean Seas, Iceland, Falkland Islands, Chile coast, coast of California, English Channel.

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Feeding:

Probably epistrate feeders with scraping tooth in stoma  (Heip et al., 1998; Tchesunov, 2015)

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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, Vol. I. Hungarian Natural History Museum, Budapest.

De Coninck, L.A., Schuurmans Stekhoven, J.H. 1933 The freeliving marine nemas of the Belgian coast II. Mem. Mus Roy. Hist Nat Belg. 58, 163pp

Heip, C., Vincx, M., Vranken, G. 1985. The ecology of marine nematodes. Oceanography and marine biology. Ann Rev Lond 23:399-489

Kovalyev, S.V. & Tchesunov, A.V. 2005. Taxonomic review of microlaimids with description of five species from the White Sea (Nematoda: Chromadoria). Zoosystematica Rossica, 14: 1-16.

Kovalyev, S.V., Miljutina, M.A. 2009. A review of the genus Aponema Jensen, 1978 (Nematoda: Microlaimidae) with description of three new species. Zootaxa DOI: 10.11646/zootaxa.2007.1.3

Revkova, T.N. 2017. Two new species of free-living nematodes genera Microlaimus de Man, 1880 and Aponema Jensen, 1978 (Nematoda: Microlaimidae) from the Black Sea. Zootaxa 4344:387-394.

Tchesunov, A.V. 2015. Free-living nematode species (Nematoda) in hydrothermal sites of the North Mid-Atlantic Ridge. Helgoland Marine Research 69:343-384.

 

 

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Copyright  1999 by Howard Ferris.
Revised: September 01, 2024 .