Aquatic Parasite Observatory

Choledocystus spp. (Pereira & Cuocolo, 1941)

    • Species Name: Choledocystus spp. (Pereira & Cuocolo, 1941)
    • Synonyms: None
    • Taxonomy: (Pereira & Cuocolo, 1941) Animalia, Platyhelminthes, Trematoda, Plagiorchiida, Plagiorchiidae, Choledocystus spp.
    • Description:
      1. Body rounded-oval to fusiform. Tegument spined. Oral sucker subterminal, larger than or equal to ventral sucker. Ventral sucker closely pre-equatorial. Prepharynx indistinct. Pharynx well developed. Oesophagus short. Intestinal bifurcation in mid-forebody. Caeca extend to near posterior extremity. Testes entire, more or less roundd, arranged symmetrically or somewhat obliquely in middle of body. Cirrus-sac relatively large, arcuate; contains bipartite seminal vesicle, well-developed pars prostatica and unarmed cirrus. Genital pore submedian, close to intestinal bifurcation. Ovary submedian, immediately posterior to ventral sucker. Seminal receptacle absent. Vitelline follicles lateral to intestinal caeca or partly overlap them, extend from intestinal bifurcation to level margins of testes or caecal ends. Excretory vesicle more or less Y-shaped, with very short limbs. In gall-bladder, bile-ducts and liver of anuran amphibians; neotropics.
    • Life Cycle: Coming Soon
    • Sources: Bray, R.A., Gibson D.I., and Jones, A. 2008. Keys to the Trematoda, Vol. 3, p. 317.
    • APO Parasite Records: (by Life Cycle)

Parasite Images:

  • University of Colorado Boulder