Aquatic Parasite Observatory

Manodistomum  syntomentera (Stafford, 1905)

    • Species Name: Manodistomum syntomentera (Stafford, 1905)
    • Synonyms: None
    • Taxonomy: Animalia, Platyhelminthes, Trematoda, Plagiorchiida, Plagiorchiidae, Manodistomum syntomentera
    • Description: "Length (permanent mount) 1.15, breadth 0.399. Mouth sucker 0.184 x 0.189. Ventral sucker small, about 0.107 in centre of body. Pharynx small, immediately behind mouth sucker. Oesophagus 0.23 long, narrow. Caeca twice as long as oesophagus, falling some distance short of posterior end. Excretory bladder broad and long, forking at the middle of the length of the coeca not far behind the ventral sucker. Immature, but parts of the genital organs represented by rudiments. Testes small, globular bodies, in a line with but behind the ends of the coeca, dividing the space between these and the end of the worm. They are lateral and parallell and give off fine ducts anteriorly. Ovary crowded between ventral sucker and the fork of the excretory bladder. Genital pore in the short space between the ventral sucker and the fork of the intestine, with the end organs of the genital ducts faintly outlined. No recognizable vitellaria” (Zoologischer Anzeiger).
    • Life Cycle: First intermediate hosts are Physa snails, second intermediate hosts are frogs and the definitive hosts are garter snakes (Dalzell, 1998).
    • Sources: Zoologischer Anzeiger, Vol. 28, p. 682.
    • Dalzell, B.J. 1998. Possibilities of Manodistomum syntomentera as a cause of deformities in Rana pipiens. UW-La Crosse Journal of Undergraduate Research (JUR), Vol. I, p. 28-32.
    • APO Parasite Records:

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  • University of Colorado Boulder