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KMID : 0425120150530060719
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Parasites, Hosts and Diseases
2015 Volume.53 No. 6 p.719 ~ p.724
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A Horsehair Worm, Gordius sp. (Nematomorpha: Gordiida), Passed in a Canine Feces
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Hong Eui-Ju
Sim Cheol-Ho
Chae Joon-Seok
Kim Hyeon-Cheol
Park Jin-Ho
Choi Kyoung-Seong
Yu Do-Hyeon
Yoo Jae-Gyu
Park Bae-Keun
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Abstract
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Nematomorpha, horsehair or Gordian worms, include about 300 freshwater species in 22 genera (Gordiida) and 5 marine species in 1 marine genus (Nectonema). They are parasitic in arthropods during their juvenile stage. In the present study, the used gordian worm was found in the feces of a dog (5-month old, male) in July 2014. Following the worm analysis using light and scanning electron microscopes, the morphological classification was re-evaluated with molecular analysis. The worm was determined to be a male worm having a bi-lobed tail and had male gonads in cross sections. It was identified as Gordius sp. (Nematomorpha: Gordiidae) based on the characteristic morphologies of cross sections and areole on the cuticle. DNA analysis on 18S rRNA partial sequence arrangements was also carried out, and the gordiid worm was assumed to be close to the genus Gordius based on a phylogenic tree analysis.
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KEYWORD
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Gordius, horsehair worm, Nematomorpha, dog, Korea
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