Parabronema

 

Contents

 

Rev: 02/20/2024

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

Chromadorea
  Chromadoria
   Rhabditida
Spirurina
              Habronematoidea
               Habronematidae

Parabronema Baylis, 1921

Type species of genus: Parabronema indicum Baylis, 1921

    Synonyms:

Sclerostoma Baird, 1868

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Morphology and Anatomy:

Females:

  •  Larger than the male.
  • Tail short, conically pointed or blunt, and dorsally curved
  • Vulva close to posterior end of esophagus. The vagina is long, narrow and muscular, and runs straight backwards with the exception of a U-shaped bend close to the vulva\.
  • Didelphic, The two uterine branches are parallel, runningn first posetriorly then one turning anteriorly, the other continuing posteriorly. T
  • Apparenly, the uterus containing immense numbers of embryos which are not enclosed in a hard egg-shell.

Males:

  • Tail coiled ventrally into a spiral, with lateral alar expansions,
  • Spicules unequal, the slender left spicule being from two to four times as long as the stouter right.,
  • Paired caudal papillae with long nerve pulps, in six pairs, of which four are preanal and two postanal.
  •  In addition to the paired papillae, a large median double papilla is present immediately in front of the cloacal aperture

Ref: Baylis, 1921

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

   

Parabronema indicum. A: Anterior, dorsal; B: Anterior lateral. C: Face-view, head.
a.a auricular appendage, c.p cervical papilla, d.s dorsal shield, l: lip, l.p: lateral papilla, p.p: papillae of dorsal and bentral cuticular shields, s.l.p.: sublateral papilla of lip.
Drawings from Baylis, 1921
 
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Distribution:

 

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Feeding:

Species are parasites of camels, sheep, pecaries and wild ruminants, including rhinocerus and elephant. Type species, P. indicum, described from stomach wall of an elephant in India.

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Biology and Ecology:

 

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Life Cycle:

 
For Ecophysiological Parameters for this genus, click 
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Ecosystem Functions and Services:

 

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Management:

 
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References:

Alfatlawy, H.H. and Alfatlawi, M.A. 2021. Morphological and molecular identification of Parabronema skrjabini of camels (Camelus dromedary) in Najaf province. Iraqi Journal of Veterinary Sciences, 35:507-512.

Baird. W. 1868.  Description of a new Species of Sclerostoma from the Stomach of the African Elephant. Proc. Zool. Soc. Lond. p. 262.

Baylis, H. A., 1921. A new genus of nematodes parasitic in elephants. Parasitology, 13:57-66.

Busalaeva, N.N., Sholl, V.A. 1977. The horn fly Lyperosia irritans L. as intermediate host of the nematode Parabronema skrjabini. Trudy Instituta Zoologii, Akademiya Nauk Kazakhskoi SSR. 136:56-58.

Cobbold, T.S. 1882. The Parasites of Elephants. Trans. Linn. Soc. Lond. (2) Zool. n. 4, p. 223.

 

Copyright 1999 by Howard Ferris.
Revised: February 20, 2024.