Raphidascaris lanfrediae

 

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Rev 09/25/2024

  Classification Hosts
Morphology and Anatomy Life Cycle
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Distribution Management
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Classification

Class:    Chromadorea
SubClass: Spiruria
Order:       Ascaridida
Superfamily: Ascaridoidea
Family:         Raphidascarididae

                          Raphidascaris lanfrediae Carvalho de Melo, dos Santos, Giese1,  dos Santos & Santos, 2011

Morphology and Anatomy:

  • Body length 3-6.5 mm
  • Cuticle smooth and with cervical cuticular alae.
  • Body whitish color.
  • Lips well developed; without interlabia; lips with anterior round processes. Dorsal lip bearing two double papillae; ventrolateral lips with one double papilla, one single papilla and one amphid.
  •  Lateral membranous margins forming two finger-shaped protrusions at each side of lips,
  • Mouth aperture triangular.
  • Esophagus expanded at its posterior half. Ventriculus shorter than broad; ventral ventricular appendix longer than broad.
  • Excretory pore situated short distance posterior to nerve ring.
  • Tail of both sexes conical.
: Raphidascaris lanfrediae  A:  female, full body; B: anterior end; C: apical view of lips; D: male tail, ventro-lateral view; E: posterior end of male.
Bars: A: 1 mm; B: 200 um; C, D: 50 um; E: 500 um
Drawings from Carvalho de Melo et al., 2011

Male:

  • Spicules equal length, simple, well sclerotized,
  • Caudal alae poorly developed, short, extending from mid-length of spicules to level of last pair of papillae.
  • Preanal papillae in 14-16 subventral pairs
  • Postanal papillae in six pairs,

Ref: Carvalho de Melo et al., 2011

Female:

  • Monodelphic opisthodelphic

  • Vulva at short distance below esophagus, 0.40-1.06 mm from anterior extremity; vulval lips simple

  •  Vagina muscular, directed posteriorly from vulva.


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

 

  
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Distribution:

Describesd from the fish Satanoperca jurupari collected in the Guama River close to the delta of the Amazon in Brazil.

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Feeding:

Parasites of digestive tract of freshwater fish.

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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:

Carvalho de Melo, M.F., dos Santos, J.N., Giese1, E.G., dos Santos, E.G.N.,Santos, C.P. 2011. Raphidascaris (Sprentascaris) lanfrediae sp. nov. (Nematoda: Anisakidae) from the fish Satanoperca jurupari (Osteichthyes: Cichlidae). Mem Inst Oswaldo Cruz, Rio de Janeiro, 106:553-556

 

 

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