Deletrocephalus

Contents

Rev 10/04/2024

Large-mouth bowel worm Classification Biology and Ecology
Morphology and Anatomy Life Cycle
Return to Deletrocephalus menu Ecosystem Functions and Services
Distribution Management
Return to Deletrocephalidae Menu Feeding  References
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Classification

Phylum:  Nematoda
Class:    Chromadorea

Chromadoria

Order:    Rhabditida 

Superfamily:  Strongyloidea

Family:  Deletrocephalidae

 

 

Deletrocephalus Diesing, 1851

 

Type species of the genus Deletrocephalus dimidiatus Diesing, 1851

Synonyms:

 

Quasistrongylus

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Morphology and Anatomy:

Ref: Ederli and Oliviera, 2017

Deletrocephalus dimidiatus from Rhea americana. (A) Anterior region of a female; esophagus, buccal capsule with teeth and lancets, cervical papilla and esophageal–intestinal junction, scale bar: 125 μm; (B) spicules, ventral view, scale bar: 150 μm; (C) apical view, lips and distribution of cephalic papillae and amphids, scale bar: 25 μm; (D) ovejector in ventral view, scale bar: 150 μm; (E) posterior extremity of female showing anus and vulva aperture, scale bar: 150 μm; (F) gubernaculum with accessory structure in ventral view; scale bar: 25 μm; (G) differential dorsal ray pattern, and the external dorsal ray from the copulatory bursa, ventral view, scale bar: 60 μm; (H) copulatory bursa showing the organization of bursal rays, scale bar: 120 μm.
Drawings from Sederli and Oliviera, 2017

Males:

  • Smaller than females; total body length averaging 8.7mm
  • Spicules slender, well chitinized, similar in length, with proximal end larger and distal end slightly pointed
  • Gubernaculum present
  • Bursa with bursal rays

Females:

  • Didelphic, prodelphic
  • Vulva posterior, near anus
  • Tail conical


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

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Distribution

Intestinal parasites of birds:  Rhea species.

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Economic Importance:

Deletrocephalus dimidiatus, D. cesarpintoi and Paradeletrocephalus minor are parasites of the gastrointestinal tract of the rhea, Rhea americana. Only D. dimidiatus has been reported to be a parasite of the other rhea species, Darwin's rhea, R. pennata (Ederli and Oliviera, 2017)

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Hosts:

Rhea sp.

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Feeding

Intestinal parasites

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Life Cycle:

   
For Ecophysiological Parameters for this genus, click 
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Damage:

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Management:

 


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References:

Diesing C.M. 1851. Systema Helminthum . Vol. 2 . Vindobonae. Vienna, Austria , Wilhelmum Braumüller 

Ederli, N.N., Oliviera, F.C.R. 2017. Morphology of the nematode Deletrocephalus dimidiatus Diesing, 1851 from the rhea, Rhea americana Linnaeus, 1758, together with a key to species of Deletrocephalinae. J.Helminthology 91:244-254.

 

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