Oncholaimellus

  

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Rev 03/09/2024

  Classification Hosts
Morphology and Anatomy Life Cycle
Return to Oncholaimellus Menu Economic Importance Damage
Distribution Management
Return to Oncholaimdae Menu Feeding  References
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Classification:
Enoplea
     Enoplia
        Enoplida
              Oncholaimoidea
                    Oncholaimidae
Oncholaimellinae

Oncholaimellus De Man, 1890

Type species of the genus: Oncholaimellus calvadosicus De Man 1890

Synonyms:

 

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Morphology and Anatomy:

Species are distinguished bymainly male cheracters: presence or absnece of a bursa,  the number and size of circumcloacal papillae or setae, length and shape of spicules, length of cephalic setae.

General cherecteristics:

Ref: Neres et al., 2014

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Female:

Male:

  • Spicules short or long, equal or unequal.
  • Gubernaculum short or absent.
  • Pre- and post-cloacal papillae.
  • Bursa usually present

 
Oncholaimellus intersexus
A: Male habitus; B: Buccal cavity; C: Anterior sensilla and amphid fovea; D: Cuticular pores; E: Anterior body -nerve ring and secretory-excretory pore); F: Tail and spicules; G: Circumoral setiform papilae
Drawings from Neres et al., 2014
Body size range for the species of this genus in the database - Click:
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Distribution:

Free-living marine nematodes.

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Economic Importance:

 

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Feeding:

    

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Life Cycle:

For Ecophysiological Parameters for this genus, click 
 
Neres et al (2014) reported that one specimen of Oncholaimellus intersexus had both female and male reproductive structures. The female structuresd were functional as indicated by eggs in the uterus.
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Damage:

 

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Management:

 

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References:

Filipjev I.N. 1918. Free-living marine nematodes of the Sevastopol area Transactions of the Zoological Laboratory and the Sevastopol Biological Station of the Russian Academy of Sciences Series II No 4 (Issue I & II) [in Russian]

Neres, P.F., Da Silva, M.C., Mirands-Jr, G.V., Fonseca-Genevois, V., Esteves, A.M. 2014. Five new species of Oncholaimellus (Oncholaimidae: Nematoda) from north-east Brazil, with an emended diagnosis and an updated key to the genus . J. Marine Biol, Assoc. UK 94:703-727.

 

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Copyright 1999 by Howard Ferris.
Revised: March 09, 2024.